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版本规则">TiDB 版本规则</div></div></div></div></div></li></a><a class="MuiTypography-root MuiTypography-body1 css-ae3kd9" target="_blank" href="https://cn.pingcap.com/tidb-release-support-policy/" style="text-decoration:none;width:100%;color:inherit"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-3" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="版本周期支持策略">版本周期支持策略</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/binary-package"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-4" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="TiDB 离线包">TiDB 离线包</div></div></div></div></div></li></a><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-5" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v8.5">v8.5</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-6" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v8.4">v8.4</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-7" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v8.3">v8.3</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-8" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v8.2">v8.2</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-9" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v8.1">v8.1</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-10" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v8.0">v8.0</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-11" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v7.6">v7.6</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-12" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v7.5">v7.5</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-13" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v7.4">v7.4</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-14" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v7.3">v7.3</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-15" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v7.2">v7.2</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-16" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v7.1">v7.1</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-17" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v7.0">v7.0</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-18" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v6.6">v6.6</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-19" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v6.5">v6.5</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-20" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v6.4">v6.4</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-21" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v6.3">v6.3</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-22" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v6.2">v6.2</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-23" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v6.1">v6.1</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-24" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v6.0">v6.0</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-25" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v5.4">v5.4</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-26" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v5.3">v5.3</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-27" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v5.2">v5.2</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-28" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v5.1">v5.1</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-29" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v5.0">v5.0</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-30" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v4.0">v4.0</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-31" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v3.1">v3.1</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="false" id="left-nav-treeview-0-15-32" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-hkir54" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v3.0">v3.0</div></div></div></div></div></li><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-expanded="true" id="left-nav-treeview-0-15-33" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content Mui-expanded" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-2jyri7"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium MuiTreeItem-ChevronRightIcon css-13dmm4z" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ChevronRightIcon"><path d="M10 6 8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="v2.1">v2.1</div></div></div></div></div><ul class="MuiCollapse-root MuiCollapse-vertical MuiTreeItem-group MuiCollapse-entered css-1xxsnna" style="min-height:0px" role="group"><div class="MuiCollapse-wrapper MuiCollapse-vertical css-hboir5"><div class="MuiCollapse-wrapperInner MuiCollapse-vertical css-8atqhb"><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.19"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-0" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.19">2.1.19</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.18"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-1" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.18">2.1.18</div></div></div></div></div></li></a><a aria-current="page" style="text-decoration:none;width:100%;color:inherit" class="" href="/zh/tidb/stable/release-2.1.17"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" aria-selected="true" id="left-nav-treeview-0-15-33-2" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content Mui-expanded Mui-selected" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.17">2.1.17</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.16"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-3" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.16">2.1.16</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.15"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-4" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.15">2.1.15</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.14"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-5" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.14">2.1.14</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.13"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-6" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.13">2.1.13</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.12"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-7" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.12">2.1.12</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.11"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-8" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.11">2.1.11</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.10"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-9" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.10">2.1.10</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.9"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-10" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.9">2.1.9</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.8"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-11" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.8">2.1.8</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.7"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-12" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.7">2.1.7</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.6"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-13" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.6">2.1.6</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.5"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-14" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.5">2.1.5</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.4"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-15" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.4">2.1.4</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.3"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-16" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.3">2.1.3</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.2"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-17" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.2">2.1.2</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1.1"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-18" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1.1">2.1.1</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1-ga"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-19" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1 GA">2.1 GA</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1-rc.5"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-20" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1 RC5">2.1 RC5</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1-rc.4"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-21" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1 RC4">2.1 RC4</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1-rc.3"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-22" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1 RC3">2.1 RC3</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1-rc.2"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-23" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div class="MuiBox-root css-3o0h5k"/><div class="MuiBox-root css-1j9cl4c"><div class="MuiTypography-root MuiTypography-body1 css-1drfgi3" aria-label="2.1 RC2">2.1 RC2</div></div></div></div></div></li></a><a style="text-decoration:none;width:100%;color:inherit" href="/zh/tidb/stable/release-2.1-rc.1"><li class="MuiTreeItem-root css-14t19hb" role="treeitem" id="left-nav-treeview-0-15-33-24" tabindex="-1" style="margin-top:0.1875rem;margin-bottom:0.1875rem"><div class="css-fhn3dm MuiTreeItem-content" style="width:inherit"><div class="MuiTreeItem-iconContainer"/><div class="MuiTreeItem-label"><div class="css-xeut16"><div 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aria-label="术语表">术语表</div></div></div></div></div></li></a></ul></div></aside><main class="MuiBox-root css-sb2sd0"><div class="MuiBox-root css-w0vdto"><div class="css-1q5cbag"><div class="MuiBox-root css-was4pq"><div class="MuiContainer-root MuiContainer-maxWidthLg MuiContainer-disableGutters doc-content css-5csqms"><div class="markdown-body MuiBox-root css-0"><h1 id="tidb-2117-release-notes" style="position:relative">TiDB 2.1.17 Release Notes<a href="#tidb-2117-release-notes" aria-label="tidb 2117 release notes permalink" class="anchor after"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a></h1><p>发版日期：2019 年 9 月 11 日</p><p>TiDB 版本：2.1.17</p><p>TiDB Ansible 版本：2.1.17</p><ul><li><p>新特性</p><ul><li>TiDB 的 <code>SHOW TABLE REGIONS</code> 语法新增 <code>WHERE</code> 条件子句</li><li>TiKV、PD 新增 <code>config-check</code> 功能，用于配置项检查</li><li>pd-ctl 新增 <code>remove-tombstone</code> 命令，支持清理 tombstone store 记录</li><li>Reparo 新增 <code>worker-count</code> 和 <code>txn-batch</code> 配置项，用于控制恢复速率</li></ul></li><li><p>改进提升</p><ul><li>PD 优化调度流程，支持主动下发调度</li><li>TiKV 优化启动流程，减少重启节点带来的抖动</li></ul></li><li><p>行为变更</p><ul><li>TiDB 慢日志中的 <code>start ts</code> 由最后一次重试的时间改为第一次执行的时间</li><li>TiDB 慢日志中的 <code>Index_ids</code> 字段替换为 <code>Index_names</code> 字段，提升慢日志易用性</li><li>TiDB 配置文件中添加 <code>split-region-max-num</code> 参数，用于调整 <code>SPLIT TABLE</code> 语法允许的最大 Region 数量，默认配置下，允许的数量由 1,000 增加至 10,000</li></ul></li></ul><h2 id="tidb" style="position:relative">TiDB<a href="#tidb" aria-label="tidb permalink" class="anchor after"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a></h2><ul><li>SQL 优化器<ul><li>修复 <code>EvalSubquery</code> 在构建 <code>Executor</code> 出现错误时，错误信息没有被正确返回的问题 <a href="https://github.com/pingcap/tidb/pull/11811" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11811</a></li><li>修复 Index Lookup Join 中，外表的行数大于一个 batch 时，查询的结果可能不正确的问题；扩大 Index Lookup Join 的作用范围：可以使用 <code>UnionScan</code> 作为 <code>IndexJoin</code> 的子节点 <a href="https://github.com/pingcap/tidb/pull/11843" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11843</a></li><li>针对统计信息的反馈过程可能产生失效 Key 的情况，<code>SHOW STAT_BUCKETS</code> 语句现在增加了失效 Key 的显示，例如：<code>invalid encoded key flag 252</code> <a href="https://github.com/pingcap/tidb/pull/12098" target="_blank" referrerpolicy="no-referrer-when-downgrade">#12098</a></li></ul></li><li>SQL 执行引擎<ul><li>修复 <code>CAST</code> 函数在进行数值类型转换时，首先将数值转换为 <code>UINT</code> 导致一些结果不正确的问题（例如，<code>select cast(13835058000000000000 as double)</code>）<a href="https://github.com/pingcap/tidb/pull/11712" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11712</a></li><li>修复 <code>DIV</code> 运算的被除数为 <code>DECIMAL</code> 类型且运算含有负数时，运算结果可能不正确的问题 <a href="https://github.com/pingcap/tidb/pull/11812" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11812</a></li><li>添加 <code>ConvertStrToIntStrict</code> 函数，修复执行 <code>SELECT</code>/<code>EXPLAIN</code> 语句时，一些字符串转换 <code>INT</code> 类型结果与 MySQL 不兼容的问题 <a href="https://github.com/pingcap/tidb/pull/11892" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11892</a></li><li>修复使用 <code>EXPLAIN ... FOR CONNECTION</code> 语法时，<code>stmtCtx</code> 没有正确设置导致 <code>Explain</code> 结果可能不正确的问题 <a href="https://github.com/pingcap/tidb/pull/11978" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11978</a></li><li>修复 <code>unaryMinus</code> 函数，当 Int 结果溢出时，返回结果类型没有为 Decimal 导致与 MySQL 不兼容的问题 <a href="https://github.com/pingcap/tidb/pull/11990" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11990</a></li><li>修复 <code>LOAD DATA</code> 语句执行时，计数顺序导致的 <code>last_insert_id()</code> 可能不正确的问题 <a href="https://github.com/pingcap/tidb/pull/11994" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11994</a></li><li>修复用户显式、隐式混合写入自增列数据时，<code>last_insert_id()</code> 可能不正确的问题 <a href="https://github.com/pingcap/tidb/pull/12001" target="_blank" referrerpolicy="no-referrer-when-downgrade">#12001</a></li><li>修复一个 <code>JSON_UNQUOTE</code> 函数兼容性问题：只有在双引号 <code>"</code> 内的值需要 Unquote，例如 <code>SELECT JSON_UNQUOTE("\\\\")</code> 应当为 "<code>\\</code>"（不进行 Unquote）<a href="https://github.com/pingcap/tidb/pull/12096" target="_blank" referrerpolicy="no-referrer-when-downgrade">#12096</a></li></ul></li><li>Server<ul><li>TiDB 事务重试时，记录在慢日志中的 <code>start ts</code> 由最后一次重试的时间改为第一次执行的时间 <a href="https://github.com/pingcap/tidb/pull/11878" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11878</a></li><li>在 <code>LockResolver</code> 中添加事务的 Key 数量：当 Key 数量较少时，可以避免对整个 Region 的 Scan 操作，减小清锁的代价 <a href="https://github.com/pingcap/tidb/pull/11889" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11889</a></li><li>修复慢日志中，<code>succ</code> 字段值可能不正确的问题 <a href="https://github.com/pingcap/tidb/pull/11886" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11886</a></li><li>将慢日志中的 <code>Index_ids</code> 字段替换为 <code>Index_names</code> 字段，提升慢日志易用性 <a href="https://github.com/pingcap/tidb/pull/12063" target="_blank" referrerpolicy="no-referrer-when-downgrade">#12063</a></li><li>修复 <code>Duration</code> 内容中包含 <code>-</code> 时（例如 <code>select time(‘--’)</code>），TiDB 解析为 EOF Error 导致连接断开的错误 <a href="https://github.com/pingcap/tidb/pull/11910" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11910</a></li><li>改进 <code>RegionCache</code>：当一个 Region 失效时，它将会更快地从 <code>RegionCache</code> 中移除，减少向该 Region 发送请求的个数 <a href="https://github.com/pingcap/tidb/pull/11931" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11931</a></li><li>修复 <code>oom-action = "cancel"</code> 时，当 <code>Insert Into … Select</code> 语句发生 OOM，OOM Panic 没有被正确处理而导致连接断开的问题 <a href="https://github.com/pingcap/tidb/pull/12126" target="_blank" referrerpolicy="no-referrer-when-downgrade">#12126</a></li></ul></li><li>DDL<ul><li>为 <code>tikvSnapshot</code> 添加逆序扫描接口用于高效地查询 DDL History Job，使用该接口后 <code>ADMIN SHOW DDL JOBS</code> 的执行时间有明显降低 <a href="https://github.com/pingcap/tidb/pull/11789" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11789</a></li><li>改进 <code>CREATE TABLE ... PRE_SPLIT_REGION</code> 的语义：当指定 <code>PRE_SPLIT_REGION = N</code> 时，将预切分的 Region 个数由 2^(N-1) 改为 2^N <a href="https://github.com/pingcap/tidb/pull/11797/files" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11797</a></li><li>根据<a href="/zh/tidb/stable/online-workloads-and-add-index-operations">线上负载与 Add Index 相互影响测试</a>，调小 Add Index 后台工作线程的默认参数以避免对线上负载造成较大影响 <a href="https://github.com/pingcap/tidb/pull/11875" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11875</a></li><li>改进 <code>SPLIT TABLE</code> 语法的行为：当使用 <code>SPLIT TABLE ... REGIONS N</code> 对 Region 切分时，会生成 N 个数据 Region 和 1 个索引 Region <a href="https://github.com/pingcap/tidb/pull/11929" target="_blank" referrerpolicy="no-referrer-when-downgrade">#11929</a></li><li>在配置文件中添加 <code>split-region-max-num</code> 参数，使得 <code>SPLIT TABLE</code> 语法允许的最大 Region 数量可调整，该参数默认值 <code>10000</code> <a href="https://github.com/pingcap/tidb/pull/12080" target="_blank" referrerpolicy="no-referrer-when-downgrade">#12080</a></li><li>修复写 binlog 时，<code>CREATE TABLE</code> 语句中 <code>PRE_SPLIT_REGIONS</code> 部分没有被注释，导致语句不能被下游 MySQL 解析的问题 <a href="https://github.com/pingcap/tidb/pull/12121" target="_blank" referrerpolicy="no-referrer-when-downgrade">#12121</a></li><li><code>SHOW TABLE … REGIONS</code> 和 <code>SHOW TABLE .. INDEX … REGIONS</code> 语法新增 <code>WHERE</code> 条件子句 <a href="https://github.com/pingcap/tidb/pull/12124" target="_blank" referrerpolicy="no-referrer-when-downgrade">#12124</a></li></ul></li><li>Monitor<ul><li>增加监控指标 <code>connection_transient_failure_count</code>，用于统计 <code>tikvclient</code> 的 gRPC 连接错误数量 <a href="https://github.com/pingcap/tidb/pull/12092" target="_blank" referrerpolicy="no-referrer-when-downgrade">#12092</a></li></ul></li></ul><h2 id="tikv" style="position:relative">TiKV<a href="#tikv" aria-label="tikv permalink" class="anchor after"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a></h2><ul><li>解决某些情况下 Region 内 key 个数统计不准的问题 <a href="https://github.com/tikv/tikv/pull/5415" target="_blank" referrerpolicy="no-referrer-when-downgrade">#5415</a></li><li>TiKV 新增 <code>config-check</code> 选项，用于检查 TiKV 配置项是否合法 <a href="https://github.com/tikv/tikv/pull/5391" target="_blank" referrerpolicy="no-referrer-when-downgrade">#5391</a></li><li>优化启动流程，减少重启节点带来的抖动 <a href="https://github.com/tikv/tikv/pull/5277" target="_blank" referrerpolicy="no-referrer-when-downgrade">#5277</a></li><li>优化某些情况下解锁的流程，加速事务解锁 <a href="https://github.com/tikv/tikv/pull/5339" target="_blank" referrerpolicy="no-referrer-when-downgrade">#5339</a></li><li>优化 <code>get_txn_commit_info</code> 的流程，加速事务提交 <a href="https://github.com/tikv/tikv/pull/5062" target="_blank" referrerpolicy="no-referrer-when-downgrade">#5062</a></li><li>简化 Raft 相关的 log <a href="https://github.com/tikv/tikv/pull/5425" target="_blank" referrerpolicy="no-referrer-when-downgrade">#5425</a></li><li>解决在某些情况下 TiKV 异常退出的问题 <a href="https://github.com/tikv/tikv/pull/5441" target="_blank" referrerpolicy="no-referrer-when-downgrade">#5441</a></li></ul><h2 id="pd" style="position:relative">PD<a href="#pd" aria-label="pd permalink" class="anchor after"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a></h2><ul><li>PD 新增 <code>config-check</code> 选项，用于检查 PD 配置项是否合法 <a href="https://github.com/pingcap/pd/pull/1725" target="_blank" referrerpolicy="no-referrer-when-downgrade">#1725</a></li><li>pd-ctl 新增 <code>remove-tombstone</code> 命令，支持清理 tombstone store 记录 <a href="https://github.com/pingcap/pd/pull/1705" target="_blank" referrerpolicy="no-referrer-when-downgrade">#1705</a></li><li>支持主动下发 Operator，加快调度速度 <a href="https://github.com/pingcap/pd/pull/1686" target="_blank" referrerpolicy="no-referrer-when-downgrade">#1686</a></li></ul><h2 id="tools" style="position:relative">Tools<a href="#tools" aria-label="tools permalink" class="anchor after"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a></h2><ul><li><p>TiDB Binlog</p><ul><li>Reparo 新增 <code>worker-count</code> 和 <code>txn-batch</code> 配置项，用于控制恢复速率 <a href="https://github.com/pingcap/tidb-binlog/pull/746" target="_blank" referrerpolicy="no-referrer-when-downgrade">#746</a></li><li>Drainer 优化内存使用，提升同步执行效率 <a href="https://github.com/pingcap/tidb-binlog/pull/735" target="_blank" referrerpolicy="no-referrer-when-downgrade">#735</a></li><li>Pump 修复有时候无法正常下线的 bug <a href="https://github.com/pingcap/tidb-binlog/pull/739" target="_blank" referrerpolicy="no-referrer-when-downgrade">#739</a></li><li>Pump 优化 LevelDB 处理逻辑，提升 GC 执行效率 <a href="https://github.com/pingcap/tidb-binlog/pull/720" target="_blank" referrerpolicy="no-referrer-when-downgrade">#720</a></li></ul></li><li><p>TiDB Lightning</p><ul><li>修复从 checkpoint 点重新导入可能会导致 tidb-lightning 崩溃的 bug <a href="https://github.com/pingcap/tidb-lightning/pull/239" target="_blank" referrerpolicy="no-referrer-when-downgrade">#239</a></li></ul></li></ul><h2 id="tidb-ansible" style="position:relative">TiDB Ansible<a href="#tidb-ansible" aria-label="tidb ansible permalink" class="anchor after"><svg aria-hidden="true" focusable="false" height="16" version="1.1" viewbox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"/></svg></a></h2><ul><li>更新 Spark 版本为 2.4.3，同时更新 TiSpark 为兼容该 Spark 的 2.2.0 版本 <a href="https://github.com/pingcap/tidb-ansible/pull/914" target="_blank" referrerpolicy="no-referrer-when-downgrade">#914</a>，<a href="https://github.com/pingcap/tidb-ansible/pull/927" target="_blank" referrerpolicy="no-referrer-when-downgrade">#919</a></li><li>修复了当远程机器密码过期时长时间连接等待的问题 <a href="https://github.com/pingcap/tidb-ansible/pull/937" target="_blank" referrerpolicy="no-referrer-when-downgrade">#937</a>，<a href="https://github.com/pingcap/tidb-ansible/pull/948" target="_blank" referrerpolicy="no-referrer-when-downgrade">#948</a></li></ul></div></div><div class="MuiBox-root css-0"><h2 class="MuiTypography-root MuiTypography-h2 css-ys9aki">文档内容是否有帮助？</h2><div class="css-n4khra"><button class="MuiButtonBase-root MuiButton-root MuiButton-outlined MuiButton-outlinedPrimary MuiButton-sizeSmall MuiButton-outlinedSizeSmall MuiButton-disableElevation FeedbackBtn-thumbUp css-7nfhq0" tabindex="0" type="button" aria-label="Thumb Up"><span class="MuiButton-startIcon MuiButton-iconSizeSmall css-16rzsu1"><svg class="MuiSvgIcon-root MuiSvgIcon-fontSizeMedium css-11aslls" focusable="false" aria-hidden="true" viewbox="0 0 24 24" data-testid="ThumbUpOutlinedIcon"><path d="M9 21h9c.83 0 1.54-.5 1.84-1.22l3.02-7.05c.09-.23.14-.47.14-.73v-2c0-1.1-.9-2-2-2h-6.31l.95-4.57.03-.32c0-.41-.17-.79-.44-1.06L14.17 1 7.58 7.59C7.22 7.95 7 8.45 7 9v10c0 1.1.9 2 2 2zM9 9l4.34-4.34L12 10h9v2l-3 7H9V9zM1 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