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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7369) Erasure coding: distribute recovery work for striped blocks to DataNode
Date Tue, 17 Mar 2015 22:31:38 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14366212#comment-14366212
] 

Kai Zheng commented on HDFS-7369:
---------------------------------

The clarifying sounds good to me. Any update ?

> Erasure coding: distribute recovery work for striped blocks to DataNode
> -----------------------------------------------------------------------
>
>                 Key: HDFS-7369
>                 URL: https://issues.apache.org/jira/browse/HDFS-7369
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-7369-000-part1.patch, HDFS-7369-000-part2.patch, HDFS-7369-001.patch,
HDFS-7369-002.patch
>
>
> This JIRA updates NameNode to handle background / offline recovery of erasure coded blocks.
It includes 2 parts:
> # Extend {{UnderReplicatedBlocks}} to recognize EC blocks and insert them to appropriate
priority levels. 
> # Update {{ReplicationMonitor}} to distinguish block codec tasks and send a new DataNode
command.



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