[jira] [Commented] (IMPALA-9615) Make re2's max_mem option configurable via an Impala startup flag.

["Omid Shahidi (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IMPALA-9615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17545510#comment-17545510 ] 

Omid Shahidi commented on IMPALA-9615:
--------------------------------------

Hi, I'd like to help with this issue.

> Make re2's max_mem option configurable via an Impala startup flag.
> ------------------------------------------------------------------
>
>                 Key: IMPALA-9615
>                 URL: https://issues.apache.org/jira/browse/IMPALA-9615
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>    Affects Versions: Impala 3.4.0
>            Reporter: Attila Jeges
>            Priority: Major
>              Labels: backend, ramp-up
>
> Right now Impala always uses the default max_mem value for re2 regexp pattern matching.
> For more memory consuming patterns this can cause the following error:
> "re2/re2.cc:667: DFA out of memory: size xxxxx, bytemap range xx, list count xxxxx".
> It would be nice if re2's max_mem option would be configurable via an Impala startup flag.



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