hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Walter Su (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7891) A block placement policy with best fault tolerance
Date Wed, 18 Mar 2015 10:02:38 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14366903#comment-14366903
] 

Walter Su commented on HDFS-7891:
---------------------------------

The CPU time of random policy with maxNodesPerRack is less than 1/10 msec per call. Is it
necessary using sorted rack method? Maybe not, IMO.

> A block placement policy with best fault tolerance
> --------------------------------------------------
>
>                 Key: HDFS-7891
>                 URL: https://issues.apache.org/jira/browse/HDFS-7891
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Walter Su
>            Assignee: Walter Su
>         Attachments: HDFS-7891.002.patch, HDFS-7891.003.patch, HDFS-7891.patch, PlacementPolicyBenchmark.txt,
testresult.txt
>
>
> a block placement policy tries its best to place replicas to most racks.



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

Mime
View raw message