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Posted to dev@kylin.apache.org by "Lemont (JIRA)" <ji...@apache.org> on 2018/06/19 09:54:00 UTC

[jira] [Created] (KYLIN-3416) Kylin bitmap null pointer exception

Lemont created KYLIN-3416:
-----------------------------

             Summary: Kylin bitmap null pointer exception
                 Key: KYLIN-3416
                 URL: https://issues.apache.org/jira/browse/KYLIN-3416
             Project: Kylin
          Issue Type: Bug
          Components: Query Engine
    Affects Versions: v2.3.1
            Reporter: Lemont


Hi,team:

  Ithink there is a conflict between floor function and count distinct.

For example:

select
 floor((1524931200 - biz_time)/(30*86400)),
 count(DISTINCT id) id
 from test
 group by floor((1524931200 - biz_time)/(30*86400))

Caused by: java.lang.NullPointerException
 at org.apache.kylin.measure.bitmap.RoaringBitmapCounter.getMutableBitmap(RoaringBitmapCounter.java:58)
 at org.apache.kylin.measure.bitmap.RoaringBitmapCounter.orWith(RoaringBitmapCounter.java:72)
 at org.apache.kylin.measure.bitmap.BitmapAggregator.aggregate(BitmapAggregator.java:43)
 at org.apache.kylin.measure.bitmap.BitmapDistinctCountAggFunc.add(BitmapDistinctCountAggFunc.java:31)

 



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