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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7864) Erasure Coding: Update safemode calculation for striped blocks
Date Fri, 20 Mar 2015 18:48:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14371853#comment-14371853
] 

Jing Zhao commented on HDFS-7864:
---------------------------------

Besides, you can also create a separate jira to add more unit tests to address the TODO in
TestSafeMode.java.

> Erasure Coding: Update safemode calculation for striped blocks
> --------------------------------------------------------------
>
>                 Key: HDFS-7864
>                 URL: https://issues.apache.org/jira/browse/HDFS-7864
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Jing Zhao
>            Assignee: GAO Rui
>         Attachments: HDFS-7864.1.patch, HDFS-7864.2.patch, HDFS-7864.3.patch, HDFS-7864.4.patch
>
>
> We need to update the safemode calculation for striped blocks. Specifically, each striped
block now consists of multiple data/parity blocks stored in corresponding DataNodes. The current
code's calculation is thus inconsistent: each striped block is only counted as 1 expected
block, while each of its member block may increase the number of received blocks by 1.



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