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https://issues.apache.org/jira/browse/TAJO-833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14004237#comment-14004237
]
Hudson commented on TAJO-833:
-----------------------------
SUCCESS: Integrated in Tajo-0.8.1-build #100 (See
[https://builds.apache.org/job/Tajo-0.8.1-build/100/])
TAJO-833: NPE occurs when using the column as a alias name in the multiple
DISTINCT. (Hyoungjun Kim via hyunsik) (hyunsik: rev
f0ee8d59e9b2873c93c421007bb8f53f0f1b4af3)
*
tajo-core/src/main/java/org/apache/tajo/engine/planner/physical/AggregationExec.java
* tajo-storage/src/main/java/org/apache/tajo/storage/TupleComparator.java
*
tajo-core/src/main/java/org/apache/tajo/engine/planner/global/builder/DistinctGroupbyBuilder.java
*
tajo-core/src/main/java/org/apache/tajo/engine/planner/physical/SortAggregateExec.java
* tajo-core/src/test/java/org/apache/tajo/engine/query/TestGroupByQuery.java
*
tajo-core/src/test/resources/queries/TestGroupByQuery/testDistinctAggregation_case8.sql
* CHANGES
*
tajo-core/src/main/java/org/apache/tajo/engine/planner/physical/DistinctGroupbyHashAggregationExec.java
*
tajo-core/src/main/java/org/apache/tajo/engine/planner/physical/DistinctGroupbySortAggregationExec.java
* tajo-core/src/main/java/org/apache/tajo/engine/eval/FieldEval.java
*
tajo-core/src/test/resources/results/TestGroupByQuery/testDistinctAggregation_case8.result
> NPE occurs when using the column as a alias name in the multiple DISTINCT.
> --------------------------------------------------------------------------
>
> Key: TAJO-833
> URL: https://issues.apache.org/jira/browse/TAJO-833
> Project: Tajo
> Issue Type: Bug
> Reporter: Hyoungjun Kim
> Assignee: Hyoungjun Kim
> Priority: Minor
> Attachments: TAJO-833.patch
>
>
> See title. The next query using column name l_partkey as alias throws NPE.
> {code:sql}
> select
> lineitem.l_orderkey as l_orderkey,
> lineitem.l_partkey as l_partkey,
> count(distinct lineitem.l_partkey) as cnt1,
> count(distinct lineitem.l_suppkey) as cnt2,
> sum(lineitem.l_quantity) as sum1
> from
> lineitem
> group by
> lineitem.l_orderkey, lineitem.l_partkey
> {code}
> {noformat}
> 2014-05-16 16:28:42,963 ERROR org.apache.tajo.worker.Task:
> java.lang.NullPointerException
> at org.apache.tajo.storage.VTuple.getFloat8(VTuple.java:151)
> at
> org.apache.tajo.storage.RawFile$RawFileAppender.addTuple(RawFile.java:640)
> at
> org.apache.tajo.engine.planner.physical.HashShuffleFileWriteExec.next(HashShuffleFileWriteExec.java:120)
> at org.apache.tajo.worker.Task.run(Task.java:383)
> at org.apache.tajo.worker.TaskRunner$1.run(TaskRunner.java:391)
> at java.lang.Thread.run(Thread.java:744)
> {noformat}
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