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https://issues.apache.org/jira/browse/PIG-4218?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Dai updated PIG-4218:
----------------------------
Attachment: nullmapkey.orc
PIG-4218-1.patch
Ignore the map entry with null key. Hive does it the same way (HIVE-8115). Hive
also plan to disable storing map with null key. For legacy data, Pig should not
die.
> Pig OrcStorage fail to load a map with null key
> -----------------------------------------------
>
> Key: PIG-4218
> URL: https://issues.apache.org/jira/browse/PIG-4218
> Project: Pig
> Issue Type: Bug
> Components: impl
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.14.0
>
> Attachments: PIG-4218-1.patch, nullmapkey.orc
>
>
> Error message:
> Backend error message
> ---------------------
> AttemptID:attempt_1403634189382_0006_m_000000_1 Info:Error:
> java.lang.NullPointerException
> at org.apache.pig.impl.util.orc.OrcUtils.convertOrcToPig(OrcUtils.java:97)
> at org.apache.pig.impl.util.orc.OrcUtils.convertOrcToPig(OrcUtils.java:82)
> at org.apache.pig.builtin.OrcStorage.getNext(OrcStorage.java:312)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.nextKeyValue(PigRecordReader.java:211)
> at
> org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.nextKeyValue(MapTask.java:533)
> at
> org.apache.hadoop.mapreduce.task.MapContextImpl.nextKeyValue(MapContextImpl.java:80)
> at
> org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.nextKeyValue(WrappedMapper.java:91)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:167)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1557)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
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