hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4861) BlockPlacementPolicyDefault does not consider decommissioning racks
Date Sat, 02 May 2015 04:38:08 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14524771#comment-14524771
] 

Hadoop QA commented on HDFS-4861:
---------------------------------

\\
\\
| (x) *{color:red}-1 overall{color}* |
\\
\\
|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | patch |   0m  0s | The patch command could not apply the patch during
dryrun. |
\\
\\
|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12638791/HDFS-4861-v2.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / f1a152c |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/10597/console |


This message was automatically generated.

> BlockPlacementPolicyDefault does not consider decommissioning racks
> -------------------------------------------------------------------
>
>                 Key: HDFS-4861
>                 URL: https://issues.apache.org/jira/browse/HDFS-4861
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 0.23.7, 2.1.0-beta
>            Reporter: Kihwal Lee
>            Assignee: Rushabh S Shah
>         Attachments: HDFS-4861-v2.patch, HDFS-4861.patch
>
>
> getMaxNodesPerRack() calculates the max replicas/rack like this:
> {code}
> int maxNodesPerRack = (totalNumOfReplicas-1)/clusterMap.getNumOfRacks()+2;
> {code}
> Since this does not consider the racks that are being decommissioned and the decommissioning
state is only checked later in isGoodTarget(), certain blocks are not replicated even when
there are many racks and nodes.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message