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https://issues.apache.org/jira/browse/MAPREDUCE-1302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12793314#action_12793314
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Zheng Shao commented on MAPREDUCE-1302:
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The test errors are not related.
The first one seems like random error - it didn't appear on the last hudson
test of the same patch.
The next 3 are common to all patches' test results.
>>><<<
>>>org.apache.hadoop.security.authorize.TestServiceLevelAuthorization.testServiceLevelAuthorization
>>><<< org.apache.hadoop.streaming.TestStreamingExitStatus.testMapFailOk
>>><<< org.apache.hadoop.streaming.TestStreamingExitStatus.testReduceFailOk
>>><<< org.apache.hadoop.streaming.TestStreamingKeyValue.testCommandLine
> TrackerDistributedCacheManager can delete file asynchronously
> -------------------------------------------------------------
>
> Key: MAPREDUCE-1302
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1302
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: tasktracker
> Affects Versions: 0.20.2, 0.21.0, 0.22.0
> Reporter: Zheng Shao
> Assignee: Zheng Shao
> Attachments: MAPREDUCE-1302.0.patch, MAPREDUCE-1302.1.patch
>
>
> With the help of AsyncDiskService from MAPREDUCE-1213, we should be able to
> delete files from distributed cache asynchronously.
> That will help make task initialization faster, because task initialization
> calls the code that localizes files into the cache and may delete some other
> files.
> The deletion can slow down the task initialization speed.
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