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From "Walter Su (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7613) Block placement policy for erasure coding groups
Date Mon, 09 Mar 2015 05:36:38 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14352571#comment-14352571

Walter Su commented on HDFS-7613:

This jira is implemented by HDFS-7891 and HDFS-7068
1. add a BlockPlacementPolicyFaultTolerant class in HDFS-7891
2. We can make striped files use BlockPlacementPolicyFaultTolerant in HDFS-7068
It is what I think the implementation of this jira should be. Maybe it's not good enough.
I have submitted the first version of patches for above two jiras. I'm really looking forword
to some suggestions.

> Block placement policy for erasure coding groups
> ------------------------------------------------
>                 Key: HDFS-7613
>                 URL: https://issues.apache.org/jira/browse/HDFS-7613
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Zhe Zhang
>            Assignee: Walter Su
> Blocks in an erasure coding group should be placed in different failure domains -- different
DataNodes at the minimum, and different racks ideally.

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