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Mariappan Asokan commented on MAPREDUCE-2454: --------------------------------------------- Hi Arun, I came across MAPREDUCE-1392 that mentions TestReduceFetch failures. I was able to reproduce intermittent failures when I ran the test repeatedly on my laptop. I may be wrong but it appears to be related to some timing issue. I will investigate how the test can be stabilized so that it is rerunnable. If I find anything or have a proposal to fix this issue, I will add my comments in MAPREDUCE-1392. > Allow external sorter plugin for MR > ----------------------------------- > > Key: MAPREDUCE-2454 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-2454 > Project: Hadoop Map/Reduce > Issue Type: New Feature > Affects Versions: 2.0.0-alpha, 3.0.0 > Reporter: Mariappan Asokan > Priority: Minor > Labels: features, performance, plugin, sort > Attachments: HadoopSortPlugin.pdf, KeyValueIterator.java, > MR-2454-trunkPatchPreview.gz, MapOutputSorter.java, > MapOutputSorterAbstract.java, ReduceInputSorter.java, mapreduce-2454.patch, > mr-2454-on-mr-279-build82.patch.gz > > > Define interfaces and some abstract classes in the Hadoop framework to > facilitate external sorter plugins both on the Map and Reduce sides. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira