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https://issues.apache.org/jira/browse/HIVE-14564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15445006#comment-15445006
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zhihai xu commented on HIVE-14564:
----------------------------------
Thanks for the review, [~ashutoshc]! a lot of test cases are updated to adapt
to this patch, Looks like all these cases can verify this patch.
> Column Pruning generates out of order columns in SelectOperator which cause
> ArrayIndexOutOfBoundsException.
> -----------------------------------------------------------------------------------------------------------
>
> Key: HIVE-14564
> URL: https://issues.apache.org/jira/browse/HIVE-14564
> Project: Hive
> Issue Type: Bug
> Components: Query Planning
> Affects Versions: 2.1.0
> Reporter: zhihai xu
> Assignee: zhihai xu
> Priority: Critical
> Attachments: HIVE-14564.000.patch, HIVE-14564.001.patch
>
>
> Column Pruning generates out of order columns in SelectOperator which cause
> ArrayIndexOutOfBoundsException.
> {code}
> 2016-07-26 21:49:24,390 FATAL [main]
> org.apache.hadoop.hive.ql.exec.mr.ExecMapper:
> org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while
> processing row
> at
> org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:507)
> at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:170)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:453)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException:
> java.lang.ArrayIndexOutOfBoundsException
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.processOp(ReduceSinkOperator.java:397)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:815)
> at
> org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:95)
> at
> org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:157)
> at
> org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:497)
> ... 9 more
> Caused by: java.lang.ArrayIndexOutOfBoundsException
> at java.lang.System.arraycopy(Native Method)
> at org.apache.hadoop.io.Text.set(Text.java:225)
> at
> org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryString.init(LazyBinaryString.java:48)
> at
> org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryStruct.uncheckedGetField(LazyBinaryStruct.java:264)
> at
> org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryStruct.getField(LazyBinaryStruct.java:201)
> at
> org.apache.hadoop.hive.serde2.lazybinary.objectinspector.LazyBinaryStructObjectInspector.getStructFieldData(LazyBinaryStructObjectInspector.java:64)
> at
> org.apache.hadoop.hive.ql.exec.ExprNodeColumnEvaluator._evaluate(ExprNodeColumnEvaluator.java:94)
> at
> org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.evaluate(ExprNodeEvaluator.java:77)
> at
> org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.evaluate(ExprNodeEvaluator.java:65)
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.makeValueWritable(ReduceSinkOperator.java:550)
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.processOp(ReduceSinkOperator.java:377)
> ... 13 more
> {code}
> The exception is because the serialization and deserialization doesn't match.
> The serialization by LazyBinarySerDe from previous MapReduce job used
> different order of columns. When the current MapReduce job deserialized the
> intermediate sequence file generated by previous MapReduce job, it will get
> corrupted data from the deserialization using wrong order of columns by
> LazyBinaryStruct. The unmatched columns between serialization and
> deserialization is caused by SelectOperator's Column Pruning
> {{ColumnPrunerSelectProc}}.
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