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https://issues.apache.org/jira/browse/MAPREDUCE-5269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14321541#comment-14321541
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Tsuyoshi OZAWA commented on MAPREDUCE-5269:
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Hi [~augustorsouza], it happens if we edit different projects at the same time.
Jenkins CI seems to run the tests under directory which includes changed files.
Then the tests use with old jars and you face the problem. For instances, when
the tests against hadoop-mapreduce-client-core run, it will download jars from
dependencies. One solution is committing the changes against IFile before
taking this JIRA. Your changes look very large, it's better to split JIRAs into
separate JIRAs from from a viewpoint of reviewers.
FYI: On my local, your test passes too.
> Preemption of Reducer (and Shuffle) via checkpointing
> -----------------------------------------------------
>
> Key: MAPREDUCE-5269
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5269
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Reporter: Carlo Curino
> Assignee: Carlo Curino
> Attachments: MAPREDUCE-5269.2.patch, MAPREDUCE-5269.3.patch,
> MAPREDUCE-5269.4.patch, MAPREDUCE-5269.5.patch, MAPREDUCE-5269.6.patch,
> MAPREDUCE-5269.7.patch, MAPREDUCE-5269.patch
>
>
> This patch tracks the changes in the task runtime (shuffle, reducer context,
> etc.) that are required to implement checkpoint-based preemption of reducer
> tasks.
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