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https://issues.apache.org/jira/browse/HADOOP-4516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12642955#action_12642955
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Owen O'Malley commented on HADOOP-4516:
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The escaped compact format is only used for the log files. If there is another
use, then we can make it public. In the mean time it just makes the public
interface bigger and more confusing for users.
However, it goes deeper than that. In particular, embedding various output
formats in the Counters -> Groups -> Counters classes isn't necessary or good.
It is better to have the different encodings in different classes that use the
standard apis.
> Counter formatting for the user logs should be pulled out of the public
> Counters API
> ------------------------------------------------------------------------------------
>
> Key: HADOOP-4516
> URL: https://issues.apache.org/jira/browse/HADOOP-4516
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Owen O'Malley
> Fix For: 0.20.0
>
>
> Currently the mapred.Counters class includes an obsolete format
> (makeCompactString) and a format that is only used by the user logs
> (makeEscapeCompactString). makeCompactString should be deprecated and later
> removed.The makeEscapeCompactString should be refactored to a non-public
> class.
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