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https://issues.apache.org/jira/browse/NIFI-2169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15362550#comment-15362550
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Joseph Percivall commented on NIFI-2169:
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Hello [~stephane.maa...@gmail.com], we are currently in the final stages of
releasing 0.7.0 so only critical blocker bugs will be tracked for the release.
I am removing the fix version of 0.7.0 and adding 1.0 (the other release
currently being tracked).
> Improve RouteText performance with pre-compilation of RegEx in certain cases
> ----------------------------------------------------------------------------
>
> Key: NIFI-2169
> URL: https://issues.apache.org/jira/browse/NIFI-2169
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Affects Versions: 0.6.1
> Reporter: Stephane Maarek
> Fix For: 1.0.0
>
>
> When using RegEx matches for the RouteText processor (and possibly other
> processors), the RegEx gets recompiled every time the processor works. The
> RegEx could be precompiled / cached under certain conditions, in order to
> improve the performance of the processor
> See email from Mark Payne:
> Re #2: The regular expression is compiled every time. This is done, though,
> because the Regex allows the Expression
> Language to be used, so the Regex could actually be different for each
> FlowFile. That being said, it could certainly be
> improved by either (a) pre-compiling in the case that no Expression Language
> is used and/or (b) cache up to say 10
> Regex'es once they are compiled.
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