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https://issues.apache.org/jira/browse/HIVE-6998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pengcheng Xiong reopened HIVE-6998:
-----------------------------------
Sorry, the problem still remains in the run time....
> Select query can only support maximum 128 distinct expressions
> --------------------------------------------------------------
>
> Key: HIVE-6998
> URL: https://issues.apache.org/jira/browse/HIVE-6998
> Project: Hive
> Issue Type: Bug
> Components: Query Processor, Serializers/Deserializers
> Affects Versions: 0.14.0
> Reporter: Chaoyu Tang
>
> Select query can only support maximum 128 distinct expressions. Otherwise,
> you will be thrown ArrayIndexOutOfBoundsException. For a query like:
> select count(distinct c1), count(distinct c2), count(distinct c3),
> count(distinct c4), count(distinct c5), count(distinct c6), ....,
> count(distinct c128), count(distinct c129) from tbl_129columns;
> you will get error like:
> {code}
> java.lang.Exception: java.lang.RuntimeException: Hive Runtime Error while
> closing operators
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:354)
> Caused by: java.lang.RuntimeException: Hive Runtime Error while closing
> operators
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecMapper.close(ExecMapper.java:260)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:57)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:430)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:366)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:223)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
> at java.lang.Thread.run(Thread.java:695)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException:
> org.apache.hadoop.hive.ql.metadata.HiveException:
> org.apache.hadoop.hive.ql.metadata.HiveException:
> java.lang.ArrayIndexOutOfBoundsException: -128
> at
> org.apache.hadoop.hive.ql.exec.GroupByOperator.closeOp(GroupByOperator.java:1141)
> at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:579)
> at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:591)
> at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:591)
> at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:591)
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecMapper.close(ExecMapper.java:227)
> ... 10 more
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException:
> org.apache.hadoop.hive.ql.metadata.HiveException:
> java.lang.ArrayIndexOutOfBoundsException: -128
> at
> org.apache.hadoop.hive.ql.exec.GroupByOperator.flush(GroupByOperator.java:1099)
> at
> org.apache.hadoop.hive.ql.exec.GroupByOperator.closeOp(GroupByOperator.java:1138)
> ... 15 more
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException:
> java.lang.ArrayIndexOutOfBoundsException: -128
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.processOp(ReduceSinkOperator.java:327)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
> at
> org.apache.hadoop.hive.ql.exec.GroupByOperator.forward(GroupByOperator.java:1064)
> at
> org.apache.hadoop.hive.ql.exec.GroupByOperator.flush(GroupByOperator.java:1082)
> ... 16 more
> Caused by: java.lang.ArrayIndexOutOfBoundsException: -128
> at java.util.ArrayList.get(ArrayList.java:324)
> at
> org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe.serialize(BinarySortableSerDe.java:838)
> at
> org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe.serialize(BinarySortableSerDe.java:600)
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.toHiveKey(ReduceSinkOperator.java:401)
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.processOp(ReduceSinkOperator.java:320)
> ... 19 more
> {code}
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