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hongyu bi commented on HADOOP-10048: ------------------------------------ any update about this jira? thanks. we suffered a lot from this lock > LocalDirAllocator should avoid holding locks while accessing the filesystem > --------------------------------------------------------------------------- > > Key: HADOOP-10048 > URL: https://issues.apache.org/jira/browse/HADOOP-10048 > Project: Hadoop Common > Issue Type: Improvement > Affects Versions: 2.3.0 > Reporter: Jason Lowe > Assignee: Jason Lowe > Attachments: HADOOP-10048.patch > > > As noted in MAPREDUCE-5584 and HADOOP-7016, LocalDirAllocator can be a > bottleneck for multithreaded setups like the ShuffleHandler. We should > consider moving to a lockless design or minimizing the critical sections to a > very small amount of time that does not involve I/O operations. -- This message was sent by Atlassian JIRA (v6.3.4#6332)