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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2810) Leases not properly getting renewed by clients
Date Fri, 20 Jan 2012 12:42:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13189770#comment-13189770
] 

Hudson commented on HDFS-2810:
------------------------------

Integrated in Hadoop-Hdfs-trunk #931 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/931/])
    HDFS-2810. Leases not getting renewed properly by clients. Contributed by Todd Lipcon.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1233794
Files : 
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/LeaseRenewer.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLeaseRenewer.java

                
> Leases not properly getting renewed by clients
> ----------------------------------------------
>
>                 Key: HDFS-2810
>                 URL: https://issues.apache.org/jira/browse/HDFS-2810
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs client
>    Affects Versions: 0.23.0, 0.24.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>             Fix For: 0.24.0, 0.23.1
>
>         Attachments: hdfs-2810.txt, hdfs-2810.txt
>
>
> We've been testing HBase on clusters running trunk and seen an issue where they seem
to lose their HDFS leases after a couple of hours of runtime. We don't quite have enough data
to understand what's happening, but the NN is expiring them, claiming the hard lease period
has elapsed. The clients report no error until their output stream gets killed underneath
them.

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