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  1. Hive
  2. HIVE-8588

sqoop REST endpoint fails to send appropriate JDBC driver to the cluster



    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: 0.14.0
    • Fix Version/s: 0.14.0
    • Component/s: WebHCat
    • Labels:


      This is originally discovered by Deepesh Khandelwal
      When running a Sqoop integration test from WebHCat

      curl --show-error -d command="export -libjars hdfs:///tmp/mysql-connector-java.jar --connect jdbc:mysql://deepesh-c6-1.cs1cloud.internal/sqooptest --username sqoop --password passwd --export-dir /tmp/templeton_test_data/sqoop --table person" -d statusdir=sqoop.output -X POST "http://deepesh-c6-1.cs1cloud.internal:50111/templeton/v1/sqoop?user.name=hrt_qa"

      the job is failing with the following error:

      $ hadoop fs -cat /user/hrt_qa/sqoop.output/stderr
      14/10/15 23:52:53 INFO sqoop.Sqoop: Running Sqoop version:
      14/10/15 23:52:53 WARN tool.BaseSqoopTool: Setting your password on the command-line is insecure. Consider using -P instead.
      14/10/15 23:52:54 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset.
      14/10/15 23:52:54 INFO tool.CodeGenTool: Beginning code generation
      14/10/15 23:52:54 ERROR sqoop.Sqoop: Got exception running Sqoop: java.lang.RuntimeException: Could not load db driver class: com.mysql.jdbc.Driver
      java.lang.RuntimeException: Could not load db driver class: com.mysql.jdbc.Driver
      	at org.apache.sqoop.manager.SqlManager.makeConnection(SqlManager.java:848)
      	at org.apache.sqoop.manager.GenericJdbcManager.getConnection(GenericJdbcManager.java:52)
      	at org.apache.sqoop.manager.SqlManager.execute(SqlManager.java:736)
      	at org.apache.sqoop.manager.SqlManager.execute(SqlManager.java:759)
      	at org.apache.sqoop.manager.SqlManager.getColumnInfoForRawQuery(SqlManager.java:269)
      	at org.apache.sqoop.manager.SqlManager.getColumnTypesForRawQuery(SqlManager.java:240)
      	at org.apache.sqoop.manager.SqlManager.getColumnTypes(SqlManager.java:226)
      	at org.apache.sqoop.manager.ConnManager.getColumnTypes(ConnManager.java:295)
      	at org.apache.sqoop.orm.ClassWriter.getColumnTypes(ClassWriter.java:1773)
      	at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1578)
      	at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:96)
      	at org.apache.sqoop.tool.ExportTool.exportTable(ExportTool.java:64)
      	at org.apache.sqoop.tool.ExportTool.run(ExportTool.java:100)
      	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)

      Note that the Sqoop tar bundle does not contain the JDBC connector jar. I think the problem here maybe that the mysql connector jar added to libjars isn't available to the Sqoop tool which first connects to the database through JDBC driver to collect some table information before running the MR job. libjars will only add the connector jar for the MR job and not the local one.



        1. HIVE-8588.1.patch
          27 kB
          Eugene Koifman
        2. HIVE-8588.2.patch
          27 kB
          Eugene Koifman

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              • Assignee:
                ekoifman Eugene Koifman
                ekoifman Eugene Koifman
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