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https://issues.apache.org/jira/browse/HIVE-6959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hari Sankar Sivarama Subramaniyan updated HIVE-6959:
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Description: HIVE-5771 covers Constant propagation optimizer for Hive. Now
that HIVE-5771 is committed, we should remove any vectorization related code
which duplicates this feature. For example, a fn to be cleaned is
VectorizarionContext::foldConstantsForUnaryExprs(). In addition to this change,
constant propagation should kick in when vectorization is enabled. i.e. we need
to lift the HIVE_VECTORIZATION_ENABLED restriction inside
ConstantPropagate::transform(). (was: HIVE-5771 covers Constant propagation
optimizer for Hive. We should remove any vectorization related code which
duplicates this feature once HIVE-5771 is committed.)
> Remove vectorization related constant expression folding code once Constant
> propagation optimizer for Hive is committed
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-6959
> URL: https://issues.apache.org/jira/browse/HIVE-6959
> Project: Hive
> Issue Type: Bug
> Reporter: Hari Sankar Sivarama Subramaniyan
> Assignee: Hari Sankar Sivarama Subramaniyan
>
> HIVE-5771 covers Constant propagation optimizer for Hive. Now that HIVE-5771
> is committed, we should remove any vectorization related code which
> duplicates this feature. For example, a fn to be cleaned is
> VectorizarionContext::foldConstantsForUnaryExprs(). In addition to this
> change, constant propagation should kick in when vectorization is enabled.
> i.e. we need to lift the HIVE_VECTORIZATION_ENABLED restriction inside
> ConstantPropagate::transform().
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