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https://issues.apache.org/jira/browse/IMPALA-10492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tamas Mate updated IMPALA-10492:
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Description:
Currently MAX_CNF_EXPRS is set to unlimited by default, with complex queries
that container many predicates the CNF rewrite can lead to significant frontend
memory usage and eventually OutOfMemory. A potential default value could be in
the range of 1000.
cc.: [~amansinha], [~drorke]
was:
Currently MAX_CNF_EXPRS is set to unlimited by default, with complex queries
the CNF rewrite can lead to significant frontend memory usage and eventually
OutOfMemory. A potential default value could be in the range of 1000.
cc.: [~amansinha], [~drorke]
> Lower default MAX_CNF_EXPRS query option
> ----------------------------------------
>
> Key: IMPALA-10492
> URL: https://issues.apache.org/jira/browse/IMPALA-10492
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend, Frontend
> Affects Versions: Impala 4.0
> Reporter: Tamas Mate
> Priority: Minor
> Labels: ramp-up
>
> Currently MAX_CNF_EXPRS is set to unlimited by default, with complex queries
> that container many predicates the CNF rewrite can lead to significant
> frontend memory usage and eventually OutOfMemory. A potential default value
> could be in the range of 1000.
> cc.: [~amansinha], [~drorke]
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