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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11643) Balancer fencing fails when writing erasure coded lock file
Date Tue, 11 Apr 2017 20:42:41 GMT
Andrew Wang created HDFS-11643:
----------------------------------

             Summary: Balancer fencing fails when writing erasure coded lock file
                 Key: HDFS-11643
                 URL: https://issues.apache.org/jira/browse/HDFS-11643
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: balancer & mover, erasure-coding
    Affects Versions: 3.0.0-alpha1
            Reporter: Andrew Wang
            Priority: Critical


At startup, the balancer writes its hostname to the lock file and calls hflush(). hflush is
not supported for EC files, so this fails when the entire filesystem is erasure coded.



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