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https://issues.apache.org/jira/browse/HADOOP-5203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12675063#action_12675063
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Doug Cutting commented on HADOOP-5203:
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> I can try to provide a patch for saveVersions.sh that will md5sum the entire
> source and use that in the version identifier [ ...]
That sounds like it could work well to me. The tricky bit might be concisely
and reliably determining the set of files to checksum. On one hand we don't
want to include svn, git or other generated files, and on the other we not want
to have hard-to-maintain lists of patterns to include or ignore.
> TT's version build is too restrictive
> -------------------------------------
>
> Key: HADOOP-5203
> URL: https://issues.apache.org/jira/browse/HADOOP-5203
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.19.0
> Reporter: Runping Qi
> Attachments: HADOOP-5203.patch
>
>
> At start time, TT checks whether its version is compatible with JT.
> The condition is too restrictive.
> It will shut down itself if one of the following conditions fail:
> * the version numbers must match
> * the revision numbers must match
> * the user ids who build the jar must match
> * the build times must match
> I think it should check the major part of the version numbers only (thus any
> version like 0.19.xxxx should be compatible).
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