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https://issues.apache.org/jira/browse/MAPREDUCE-1819?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ramkumar Vadali updated MAPREDUCE-1819:
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Attachment: MAPREDUCE-1819.5.patch
Modifying patch after svn up.
Test Results:
test-junit:
[junit] WARNING: multiple versions of ant detected in path for junit
[junit]
jar:file:/home/rvadali/local/external/ant/lib/ant.jar!/org/apache/tools/ant/Project.class
[junit] and
jar:file:/home/rvadali/.ivy2/cache/ant/ant/jars/ant-1.6.5.jar!/org/apache/tools/ant/Project.class
[junit] Running org.apache.hadoop.hdfs.TestRaidDfs
[junit] Tests run: 2, Failures: 0, Errors: 0, Time elapsed: 28.33 sec
[junit] Running org.apache.hadoop.raid.TestDirectoryTraversal
[junit] Tests run: 2, Failures: 0, Errors: 0, Time elapsed: 8.603 sec
[junit] Running org.apache.hadoop.raid.TestRaidHar
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 69.846 sec
[junit] Running org.apache.hadoop.raid.TestRaidNode
[junit] Tests run: 3, Failures: 0, Errors: 0, Time elapsed: 408.472 sec
[junit] Running org.apache.hadoop.raid.TestRaidPurge
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 44.013 sec
test:
BUILD SUCCESSFUL
Total time: 9 minutes 34 seconds
> RaidNode should be smarter in submitting Raid jobs
> --------------------------------------------------
>
> Key: MAPREDUCE-1819
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1819
> Project: Hadoop Map/Reduce
> Issue Type: Task
> Components: contrib/raid
> Affects Versions: 0.20.1
> Reporter: Ramkumar Vadali
> Assignee: Ramkumar Vadali
> Attachments: MAPREDUCE-1819.4.patch, MAPREDUCE-1819.5.patch,
> MAPREDUCE-1819.patch, MAPREDUCE-1819.patch.2, MAPREDUCE-1819.patch.3
>
>
> The RaidNode currently computes parity files as follows:
> 1. Using RaidNode.selectFiles() to figure out what files to raid for a policy
> 2. Using #1 repeatedly for each configured policy to accumulate a list of
> files.
> 3. Submitting a mapreduce job with the list of files from #2 using
> DistRaid.doDistRaid()
> This task addresses the fact that #2 and #3 happen sequentially. The proposal
> is to submit a separate mapreduce job for the list of files for each policy
> and use another thread to track the progress of the submitted jobs. This will
> help reduce the time taken for files to be raided.
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