Stephane Maarek created NIFI-2169:
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Summary: 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: 0.7.0
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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