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https://issues.apache.org/jira/browse/KYLIN-2026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15515641#comment-15515641
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renfangming commented on KYLIN-2026:
------------------------------------
After add your patch，occur new bug in FactDistinctColumnsReducer 98 record,
please check it
Bug Detail as below:
Error: java.lang.IndexOutOfBoundsException: Index: 9, Size: 9 at
java.util.ArrayList.rangeCheck(ArrayList.java:635) at
java.util.ArrayList.get(ArrayList.java:411) at
org.apache.kylin.engine.mr.steps.FactDistinctColumnsReducer.setup(FactDistinctColumnsReducer.java:98)
at
org.apache.kylin.engine.mr.steps.FactDistinctColumnsReducer.setup(FactDistinctColumnsReducer.java:98)
> NPE occurs when build a cube without partition column.
> ------------------------------------------------------
>
> Key: KYLIN-2026
> URL: https://issues.apache.org/jira/browse/KYLIN-2026
> Project: Kylin
> Issue Type: Bug
> Components: General
> Affects Versions: v1.5.4
> Reporter: nichunen
> Assignee: nichunen
> Labels: patch
> Fix For: v1.5.4
>
> Attachments: KYLIN-2026.patch
>
>
> I created a model with no partition column specified, step "Extract Fact
> Table Distinct Columns" failed with MR log
> "org.apache.hadoop.mapred.YarnChild: Exception running child :
> java.lang.NullPointerException at
> org.apache.kylin.cube.model.CubeJoinedFlatTableDesc.getColumnIndex(CubeJoinedFlatTableDesc.java:145)".
> I doubt the root cause is in
> org.apache.kylin.cube.CubeManager#getAllDictColumnsOnFact, a null value is
> added to the return list due to
> cubeDesc.getModel().getPartitionDesc().getPartitionDateColumnRef() gets null.
> Attached is the patch to fix, only add a null check.
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