[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: TODOC14
• Assignee: Eugene Koifman
• Reporter: Eugene Koifman
• Created: 24/Oct/14 04:01
• Updated: 01/Jul/16 18:10
• Resolved: 25/Oct/14 19:25

Description

This is originally discovered by deepesh
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: 1.4.5.2.2.0.0-897
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.

NO PRECOMMIT TESTS

Issue Links

• is related to: HIVE-6940 [WebHCat]Update documentation for Templeton-Sqoop action
• is related to: HIVE-8754 Sqoop job submission via WebHCat doesn't properly localize required jdbc jars in secure cluster
• is related to: HIVE-5072 [WebHCat]Enable directly invoke Sqoop job through Templeton