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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4350) Make enabling of stale marking on read and write paths independent
Date Sun, 03 Feb 2013 13:22:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13569772#comment-13569772
] 

Hudson commented on HDFS-4350:
------------------------------

Integrated in Hadoop-Mapreduce-trunk #1333 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1333/])
    HDFS-4350. Make enabling of stale marking on read and write paths independent. Contributed
by Andrew Wang. (Revision 1441819)

     Result = FAILURE
suresh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1441819
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/DFSConfigKeys.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/HeartbeatManager.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestGetBlocks.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestReplicationPolicy.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/metrics/TestNameNodeMetrics.java

                
> Make enabling of stale marking on read and write paths independent
> ------------------------------------------------------------------
>
>                 Key: HDFS-4350
>                 URL: https://issues.apache.org/jira/browse/HDFS-4350
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>             Fix For: 1.2.0, 2.0.3-alpha
>
>         Attachments: hdfs-4350-1.patch, hdfs-4350-2.patch, hdfs-4350-3.patch, hdfs-4350-4.patch,
hdfs-4350-5.patch, hdfs-4350-6.patch, hdfs-4350-7.patch, hdfs-4350-branch-1-1.patch, hdfs-4350-branch-1-2.patch,
hdfs-4350-branch-1-3.patch, hdfs-4350.txt
>
>
> Marking of datanodes as stale for the read and write path was introduced in HDFS-3703
and HDFS-3912 respectively. This is enabled using two new keys, {{DFS_NAMENODE_CHECK_STALE_DATANODE_KEY}}
and {{DFS_NAMENODE_AVOID_STALE_DATANODE_FOR_WRITE_KEY}}. However, there currently exists a
dependency, since you cannot enable write marking without also enabling read marking, since
the first key enables both checking of staleness and read marking.
> I propose renaming the first key to {{DFS_NAMENODE_AVOID_STALE_DATANODE_FOR_READ_KEY}},
and make checking enabled if either of the keys are set. This will allow read and write marking
to be enabled independently.

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