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Posted to hdfs-dev@hadoop.apache.org by "Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org> on 2014/07/15 03:08:05 UTC

[jira] [Created] (HDFS-6680) BlockPlacementPolicyDefault does not choose favored nodes correctly

Tsz Wo Nicholas Sze created HDFS-6680:
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             Summary: BlockPlacementPolicyDefault does not choose favored nodes correctly
                 Key: HDFS-6680
                 URL: https://issues.apache.org/jira/browse/HDFS-6680
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Tsz Wo Nicholas Sze


In one of the chooseTarget(..) methods, it tries all the favoredNodes to chooseLocalNode(..).  It expects chooseLocalNode to return null if the local node is not a good target.  Unfortunately, chooseLocalNode will fallback to chooseLocalRack but not returning null.



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