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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8652) Track BlockInfo instead of Block in CorruptReplicasMap
Date Wed, 24 Jun 2015 06:38:42 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14598959#comment-14598959
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Tsz Wo Nicholas Sze commented on HDFS-8652:
-------------------------------------------

In BlockToMarkCorrupt, b.corrupted and b.stored may have different generation stamp.  Is it
okay to replace b.corrupted with b.stored?

> Track BlockInfo instead of Block in CorruptReplicasMap
> ------------------------------------------------------
>
>                 Key: HDFS-8652
>                 URL: https://issues.apache.org/jira/browse/HDFS-8652
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-8652.000.patch
>
>
> Currently {{CorruptReplicasMap}} uses {{Block}} as its key and records the list of DataNodes
with corrupted replicas. For Erasure Coding since a striped block group contains multiple
internal blocks with different block ID, we should use {{BlockInfo}} as the key.
> HDFS-8619 is the jira to fix this for EC. To ease merging we will use jira to first make
changes in trunk/branch-2.



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