[SQOOP-1130] Sqoop2: Sqoop MapReduce Job Failed when max and min boundary are both null

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.99.2
• Fix Version/s: 1.99.3
• Component/s: connectors/generic

Environment

Mysql import data to HDFS

• Assignee: Mengwei Ding
• Reporter: Mengwei Ding
• Created: 10/Jul/13 18:37
• Updated: 11/Jul/13 23:47
• Resolved: 11/Jul/13 22:30

Description

It happens that all the values in the partition column are null. In this case, when Sqoop is partitioning data, it will find the max and min boundary are both null. Sqoop handles this case, but there is a bug.

Currently, the Map task throw the following exception in this case:

org.apache.sqoop.common.SqoopException: MAPRED_EXEC_0017:Error occurs during extractor run
	at org.apache.sqoop.job.mr.SqoopMapper.run(SqoopMapper.java:94)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:672)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:330)
	at org.apache.hadoop.mapred.Child$4.run(Child.java:268)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:396)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
	at org.apache.hadoop.mapred.Child.main(Child.java:262)
Caused by: org.apache.sqoop.common.SqoopException: GENERIC_JDBC_CONNECTOR_0002:Unable to execute the SQL statement
	at org.apache.sqoop.connector.jdbc.GenericJdbcExecutor.executeQuery(GenericJdbcExecutor.java:59)
	at org.apache.sqoop.connector.jdbc.GenericJdbcImportExtractor.extract(GenericJdbcImportExtractor.java:51)
	at org.apache.sqoop.connector.jdbc.GenericJdbcImportExtractor.extract(GenericJdbcImportExtractor.java:31)
	at org.apache.sqoop.job.mr.SqoopMapper.run(SqoopMapper.java:89)
	... 7 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'NULL' at line 1
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
	at com.mysql.jdbc.Util.getInstance(Util.java:386)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4187)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4119)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2570)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2731)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2809)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2758)
	at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1612)
	at org.apache.sqoop.connector.jdbc.GenericJdbcExecutor.executeQuery(GenericJdbcExecutor.java:56)
	... 10 more

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