[jira] [Commented] (KAFKA-7276) Consider using re2j to speed up regex operations

["Ted Yu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-7276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16634727#comment-16634727 ] 

Ted Yu commented on KAFKA-7276:
-------------------------------

For #1, see the following:
http://hadoop.apache.org/docs/r3.0.2/api/org/apache/hadoop/metrics2/filter/GlobFilter.html#compile-java.lang.String-

It is used by hadoop.



> Consider using re2j to speed up regex operations
> ------------------------------------------------
>
>                 Key: KAFKA-7276
>                 URL: https://issues.apache.org/jira/browse/KAFKA-7276
>             Project: Kafka
>          Issue Type: Task
>          Components: packaging
>            Reporter: Ted Yu
>            Assignee: kevin.chen
>            Priority: Major
>
> https://github.com/google/re2j
> re2j claims to do linear time regular expression matching in Java.
> Its benefit is most obvious for deeply nested regex (such as a | b | c | d).
> We should consider using re2j to speed up regex operations.



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