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https://issues.apache.org/jira/browse/MAPREDUCE-4149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253264#comment-13253264
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Amar Kamat commented on MAPREDUCE-4149:
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Ravi, let 'UserCounterMapper' extend 'IdentityMapper'. This way, you can set
our special counters in UserCounterMapper's map api and then invoke
IdentityMapper's map() api. Thoughts?
> Rumen fails to parse certain counter strings
> --------------------------------------------
>
> Key: MAPREDUCE-4149
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4149
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tools/rumen
> Reporter: Ravi Gummadi
> Assignee: Ravi Gummadi
> Attachments: 4149.branch-1.v1.patch, 4149.patch
>
>
> If a counter name contains "{" or "}", Rumen is not able to parse it and
> throws ParseException.
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