[jira] [Created] (HDFS-7439) Add BlockOpResponseProto's message to DFSClient's exception message

["Ming Ma (JIRA)" <ji...@apache.org>]

Ming Ma created HDFS-7439:
-----------------------------

             Summary: 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
            Priority: Minor


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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