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Posted to hdfs-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2013/01/03 00:56:15 UTC
[jira] [Commented] (HDFS-4350) Make enabling of stale marking on
read and write paths independent
[ https://issues.apache.org/jira/browse/HDFS-4350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542576#comment-13542576 ]
Hadoop QA commented on HDFS-4350:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12562980/hdfs-4350-1.patch
against trunk revision .
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/3714//console
This message is automatically generated.
> 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
> Attachments: hdfs-4350-1.patch
>
>
> 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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