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From "Zhong Yanghong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KYLIN-3813) don't do push down when both of the children of CompareTupleFilter are CompareTupleFilter with column included
Date Wed, 13 Feb 2019 06:19:00 GMT

     [ https://issues.apache.org/jira/browse/KYLIN-3813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhong Yanghong updated KYLIN-3813:
----------------------------------
    Description: 
When dynamic column is enabled, kylin will try to push down group by case when to hbase. However,
in the following case, the push down should not be enabled, since currently it's not well
supported for CompareTupleFilter to have a child of CompareTupleFilter.
{code}
case when (colA = (1=1)) = (colB = (1=1)) then 'XXX'
{code}

  was:
When dynamic column is enabled, kylin will try to push down group by case when to hbase. However,
in the following case, the push down should not be enabled, since currently 
{code}
case when (colA = (1=1)) = (colB = (1=1)) then 'XXX'
{code}


> don't do push down when both of the children of CompareTupleFilter are CompareTupleFilter
with column included
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: KYLIN-3813
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3813
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Query Engine
>            Reporter: Zhong Yanghong
>            Assignee: Zhong Yanghong
>            Priority: Major
>
> When dynamic column is enabled, kylin will try to push down group by case when to hbase.
However, in the following case, the push down should not be enabled, since currently it's
not well supported for CompareTupleFilter to have a child of CompareTupleFilter.
> {code}
> case when (colA = (1=1)) = (colB = (1=1)) then 'XXX'
> {code}



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