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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:
--------------------------------
    Description: 
Currently MAX_CNF_EXPRS is set to unlimited by default, with a complex querie 
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 
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]


> 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 a complex querie 
> 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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