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Date: Wed, 17 Feb 2016 07:24:18 +0000 (UTC)
From: "Lin Yiqun (JIRA)" <jira@apache.org>
To: hdfs-dev@hadoop.apache.org
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Subject: [jira] [Created] (HDFS-9819) FsVolume should tolerate few times
 check-dir failed due to deletion by mistake
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Lin Yiqun created HDFS-9819:
-------------------------------

             Summary: FsVolume should tolerate few times check-dir failed due to deletion by mistake
                 Key: HDFS-9819
                 URL: https://issues.apache.org/jira/browse/HDFS-9819
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Lin Yiqun
            Assignee: Lin Yiqun
             Fix For: 2.7.1


FsVolume should tolerate few times check-dir failed because sometimes we will do a delete dir/file operation by mistake in datanode data-dirs. Then the {{DataNode#startCheckDiskErrorThread}} will invoking checkDir method periodicity and find dir not existed, throw exception. The checked volume will be added to failed volume list. The blocks on this volume will be replicated again. But actually, this is not needed to do. We should let volume can be tolerated few times check-dir failed like config {{dfs.datanode.failed.volumes.tolerated}}.


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