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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9959) add log when block removed from last live datanode
Date Mon, 14 Mar 2016 22:54:33 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15194335#comment-15194335
] 

Tsz Wo Nicholas Sze commented on HDFS-9959:
-------------------------------------------

> For performance penalty, I think it should be fine because it won't generate lots of
new message.

This is a good point.

> ... should help to identify which datanode should be fixed first to recover missing blocks.

The block is already deleted from the last datanode.  How would you expect the new message
to help?

> add log when block removed from last live datanode
> --------------------------------------------------
>
>                 Key: HDFS-9959
>                 URL: https://issues.apache.org/jira/browse/HDFS-9959
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: yunjiong zhao
>            Assignee: yunjiong zhao
>            Priority: Minor
>         Attachments: HDFS-9959.patch
>
>
> Add logs like "BLOCK* No live nodes contain block blk_1073741825_1001, last datanode
contain it is node: 127.0.0.1:65341" in BlockStateChange should help to identify which datanode
should be fixed first to recover missing blocks.



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