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From "Ming Ma (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-6943) Improve NN allocateBlock log to include replicas' datanode IPs
Date Mon, 25 Aug 2014 22:32:58 GMT
Ming Ma created HDFS-6943:
-----------------------------

             Summary: Improve NN allocateBlock log to include replicas' datanode IPs
                 Key: HDFS-6943
                 URL: https://issues.apache.org/jira/browse/HDFS-6943
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Ming Ma


Datanode storage ID used to use IP and port. It has changed to use UUID. This makes debugging
harder when we want to understand which DNs are assigned when DFSClient calls addBlock. For
example,

{noformat}
BLOCK* allocateBlock: /foo. BP-1980237412-xx.xx.xxx.xxx-1408142057773 blk_1227779764_154043834{blockUCState=UNDER_CONSTRUCTION,
primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[[DISK]DS-9479727b-24c5-4068-8703-dfb9a41c056c:NORMAL|RBW],
ReplicaUnderConstruction[[DISK]DS-abe7840c-1db8-4623-9da7-3aed6a28c4f4:NORMAL|RBW], ReplicaUnderConstruction[[DISK]DS-956023f4-56a0-4c30-a148-b78c61cf764b:NORMAL|RBW]]}
{noformat}



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