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From "qus-jiawei (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-5341) DirectoryScanner hold the object lock dataset too long in scan,it make the datanode turn into deadnode and block all reciving thread
Date Fri, 11 Oct 2013 02:33:49 GMT
qus-jiawei created HDFS-5341:
--------------------------------

             Summary:  DirectoryScanner hold the object lock dataset too long in scan,it make
the datanode turn into deadnode and block all reciving thread
                 Key: HDFS-5341
                 URL: https://issues.apache.org/jira/browse/HDFS-5341
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: datanode
    Affects Versions: 2.0.4-alpha
            Reporter: qus-jiawei


When DirectoryScanner doing the scan function, it holding the dataset to diff the block info
between memory and disk.But it do a lot of disk operation because it call the file's getlength
funciton.

So,such disk operation should move to the diskreport.



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