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Hudson commented on MAPREDUCE-6303: ----------------------------------- FAILURE: Integrated in Hadoop-trunk-Commit #7496 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/7496/]) MAPREDUCE-6303. Read timeout when retrying a fetch error can be fatal to a reducer. Contributed by Jason Lowe. (junping_du: rev eccb7d46efbf07abcc6a01bd5e7d682f6815b824) * hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/task/reduce/TestFetcher.java * hadoop-mapreduce-project/CHANGES.txt * hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/Fetcher.java > Read timeout when retrying a fetch error can be fatal to a reducer > ------------------------------------------------------------------ > > Key: MAPREDUCE-6303 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-6303 > Project: Hadoop Map/Reduce > Issue Type: Bug > Affects Versions: 2.6.0 > Reporter: Jason Lowe > Assignee: Jason Lowe > Priority: Blocker > Fix For: 2.7.0 > > Attachments: MAPREDUCE-6303.001.patch > > > If a reducer encounters an error trying to fetch from a node then encounters > a read timeout when trying to re-establish the connection then the reducer > can fail. The read timeout exception can leak to the top of the Fetcher > thread which will cause the reduce task to teardown. This type of error can > repeat across reducer attempts causing jobs to fail due to a single bad node. -- This message was sent by Atlassian JIRA (v6.3.4#6332)