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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7439) Add BlockOpResponseProto's message to DFSClient's exception message
Date Tue, 24 Feb 2015 07:20:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14334521#comment-14334521
] 

Tsz Wo Nicholas Sze commented on HDFS-7439:
-------------------------------------------

The previous Jenkins report is abnormal.  Just have started another Jenkins build for the
patch.

> Add BlockOpResponseProto's message to DFSClient's exception message
> -------------------------------------------------------------------
>
>                 Key: HDFS-7439
>                 URL: https://issues.apache.org/jira/browse/HDFS-7439
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Ming Ma
>            Assignee: Takanobu Asanuma
>            Priority: Minor
>         Attachments: HDFS-7439.1.patch
>
>
> When (BlockOpResponseProto#getStatus() != SUCCESS), it helps with debugging if DFSClient
can add BlockOpResponseProto's message to the exception message applications will get. For
example, instead of
> {noformat}
>         throw new IOException("Got error for OP_READ_BLOCK, self="
>             + peer.getLocalAddressString() + ", remote="
>             + peer.getRemoteAddressString() + ", for file " + file
>             + ", for pool " + block.getBlockPoolId() + " block " 
>             + block.getBlockId() + "_" + block.getGenerationStamp());
> {noformat}
> It could be,
> {noformat}
>         throw new IOException("Got error for OP_READ_BLOCK, self="
>             + peer.getLocalAddressString() + ", remote="
>             + peer.getRemoteAddressString() + ", for file " + file
>             + ", for pool " + block.getBlockPoolId() + " block " 
>             + block.getBlockId() + "_" + block.getGenerationStamp()
>             + ", status message " + status.getMessage());
> {noformat}
> We might want to check out all the references to BlockOpResponseProto in DFSClient.



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