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I am trying to import a table data from Redshift to HDFS (using Parquet format) and facing the error shown below:
15/06/25 11:05:42 ERROR sqoop.Sqoop: Got exception running Sqoop: java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:97)
at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:478)
at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:605)
at org.apache.sqoop.Sqoop.run(Sqoop.java:143)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:179)
at org.apache.sqoop.Sqoop.runTool(Sqoop.java:218)
at org.apache.sqoop.Sqoop.runTool(Sqoop.java:227)
at org.apache.sqoop.Sqoop.main(Sqoop.java:236)
Command line query used:
sqoop import --driver "com.amazon.redshift.jdbc41.Driver" --connect
"jdbc:postgresql://:5439/events" --username "username"
--password "password" --query "SELECT * FROM mobile_og.pages WHERE \$CONDITIONS" --split-by anonymous_id --target-dir
/user/huser/pq_mobile_og_pages_2 --as-parquetfile.
It works fine when --as-parquetfile
option is removed from the above command line query.
It is confirmed to be a bug SQOOP-2571.
If you want to import all data of a table, then you can eventually run such a command:
sqoop import --driver "com.amazon.redshift.jdbc41.Driver" \
--connect "jdbc:postgresql://:5439/events" \
--username "username" --password "password" \
--table mobile_og.pages \
--split-by anonymous_id \
--target-dir /user/huser/pq_mobile_og_pages_2 \
--as-parquetfile
And --where
is also an useful parameter. Check the user manual.
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