[jira] [Assigned] (KYLIN-4962) Fix NPE in ShrunkDict step

["Xiaoxiang Yu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-4962?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiaoxiang Yu reassigned KYLIN-4962:
-----------------------------------

    Assignee: ShengJun Zheng

> Fix NPE in ShrunkDict step
> --------------------------
>
>                 Key: KYLIN-4962
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4962
>             Project: Kylin
>          Issue Type: Bug
>          Components: Job Engine
>    Affects Versions: v3.1.2
>            Reporter: ShengJun Zheng
>            Assignee: ShengJun Zheng
>            Priority: Critical
>             Fix For: v3.1.2
>
>
> There are some fields in CreateShrunkenDictionary(a spark function) that can not be serialized, causing NPE.
>  
> Caused by: java.lang.NullPointerException
>  at org.apache.kylin.common.KylinConfig.getManager(KylinConfig.java:474)
>  at org.apache.kylin.common.KylinConfig.getManager(KylinConfig.java:472)
>  at org.apache.kylin.cube.CubeDescManager.getInstance(CubeDescManager.java:67)
>  at org.apache.kylin.cube.CubeInstance.getDescriptor(CubeInstance.java:212)
>  at org.apache.kylin.cube.CubeSegment.getCubeDesc(CubeSegment.java:142)
>  at org.apache.kylin.cube.CubeSegment.buildGlobalDictionaryMap(CubeSegment.java:386)
>  at org.apache.kylin.engine.spark.SparkCubingByLayer$CreateShrunkenDictionary.call(SparkCubingByLayer.java:592)
>  at org.apache.kylin.engine.spark.SparkCubingByLayer$CreateShrunkenDictionary.call(SparkCubingByLayer.java:519)



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