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Posted to dev@hive.apache.org by "Chaoyu Tang (JIRA)" <ji...@apache.org> on 2014/05/01 17:41:14 UTC
[jira] [Created] (HIVE-6998) Select query can only support maximum
128 distinct expressions
Chaoyu Tang created HIVE-6998:
---------------------------------
Summary: 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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