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Posted to hdfs-dev@hadoop.apache.org by "Daryn Sharp (JIRA)" <ji...@apache.org> on 2014/08/28 19:44:09 UTC

[jira] [Created] (HDFS-6965) NN continues to issue block locations for DNs with full disks

Daryn Sharp created HDFS-6965:
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             Summary: NN continues to issue block locations for DNs with full disks
                 Key: HDFS-6965
                 URL: https://issues.apache.org/jira/browse/HDFS-6965
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: namenode
    Affects Versions: 2.0.0-alpha, 3.0.0
            Reporter: Daryn Sharp


Encountered issues where DNs have less space than a full block and reject incoming transfers.  The NN continues giving out locations for these nodes for some period of time.  It does not appear to be related to the DN's cached disk usage.

One impact is required replications are delayed when a full DN is chosen for the pipeline.  A DN cannot report a broken pipeline so the replication must timeout (5m) before new targets are chosen.



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