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https://issues.apache.org/jira/browse/KYLIN-3812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhong Yanghong updated KYLIN-3812:
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Description:
Currently it's not well supported for CompareTupleFilter to have a child of
CompareTupleFilter. However, in some cases, it's better to support it.
{code}
where (colA = (1=1))
{code}
The *(1=1)* can be transformed to "true". And then this filter can be pushed
down to hbase. Otherwise, the filter *(colA = (1=1))* does not work in hbase.
> optimize the child CompareTupleFilter in a CompareTupleFilter
> -------------------------------------------------------------
>
> Key: KYLIN-3812
> URL: https://issues.apache.org/jira/browse/KYLIN-3812
> Project: Kylin
> Issue Type: Improvement
> Components: Query Engine
> Reporter: Zhong Yanghong
> Assignee: Zhong Yanghong
> Priority: Major
>
> Currently it's not well supported for CompareTupleFilter to have a child of
> CompareTupleFilter. However, in some cases, it's better to support it.
> {code}
> where (colA = (1=1))
> {code}
> The *(1=1)* can be transformed to "true". And then this filter can be pushed
> down to hbase. Otherwise, the filter *(colA = (1=1))* does not work in hbase.
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