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From "Takanobu Asanuma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8483) Erasure coding: test DataNode reporting bad/corrupted blocks which belongs to a striped block.
Date Mon, 15 Jun 2015 04:42:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14585419#comment-14585419
] 

Takanobu Asanuma commented on HDFS-8483:
----------------------------------------

I did simple tests by cli based MiniDFSCluster.  I created an EC file and directly edited
 an ec-block to create a bad block.
Then I have confirmed that the DataNode reporting the bad block and the recovery/invalidation
work was scheduled.
At last the bad block was reconstructed and I was able to read the EC file. (Sorry I don't
write the unit test yet.)

> Erasure coding: test DataNode reporting bad/corrupted blocks which belongs to a striped
block.
> ----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-8483
>                 URL: https://issues.apache.org/jira/browse/HDFS-8483
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Takanobu Asanuma
>            Assignee: Takanobu Asanuma
>             Fix For: HDFS-7285
>
>
> We can mimic one/several DataNode(s) reporting bad block(s) (which belong to a striped
block) to the NameNode (through the DatanodeProtocol#reportBadBlocks call), and check if the
recovery/invalidation work can be correctly scheduled.



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