[jira] [Resolved] (KYLIN-2026) NPE occurs when build a cube without partition column.

["Shaofeng SHI (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-2026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shaofeng SHI resolved KYLIN-2026.
---------------------------------
    Resolution: Fixed

Released in v.1.5.4.1

> 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: v1.5.4.1
>
>
> 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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