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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6604) The short-circuit cache doesn't correctly time out replicas that haven't been used in a while
Date Tue, 01 Jul 2014 00:13:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14048336#comment-14048336
] 

Hadoop QA commented on HDFS-6604:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12653230/HDFS-6604.002.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/7253//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7253//console

This message is automatically generated.

> The short-circuit cache doesn't correctly time out replicas that haven't been used in
a while
> ---------------------------------------------------------------------------------------------
>
>                 Key: HDFS-6604
>                 URL: https://issues.apache.org/jira/browse/HDFS-6604
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>    Affects Versions: 2.4.0
>         Environment: Centos 6.5 and distribution Hortonworks Data Platform v2.1
>            Reporter: Giuseppe Reina
>            Assignee: Colin Patrick McCabe
>            Priority: Critical
>         Attachments: HDFS-6604.001.patch, HDFS-6604.002.patch
>
>
> When HDFS shortcircuit is enabled, the file descriptors of the deleted HDFS blocks are
kept open until the cache is full. This prevents the operating system to free the space on
disk. 
> More details on the [mailing list thread|http://mail-archives.apache.org/mod_mbox/hbase-user/201406.mbox/%3CCAPjB-CA3RV=SLhUHwUE5CV3PC4+rFfz10-TkYdBfS9RT2DeKPw@mail.gmail.com%3E]



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