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Posted to hdfs-dev@hadoop.apache.org by "Kihwal Lee (JIRA)" <ji...@apache.org> on 2013/11/15 23:21:20 UTC

[jira] [Created] (HDFS-5522) Datanode disk error check may be incorrectly skipped

Kihwal Lee created HDFS-5522:
--------------------------------

             Summary: Datanode disk error check may be incorrectly skipped
                 Key: HDFS-5522
                 URL: https://issues.apache.org/jira/browse/HDFS-5522
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.2.0, 0.23.9
            Reporter: Kihwal Lee
             Fix For: 2.3.0, 0.23.11


After HDFS-4581 and HDFS-4699, {{checkDiskError()}} is not called when network errors occur during processing data node requests.  This appears to create problems when a disk is having problems, but not failing I/O soon. 

If I/O hangs for a long time, network read/write may timeout first and the peer may close the connection. Although the error was caused by a faulty local disk, disk check is not being carried out in this case. 



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