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From: "Eli Collins (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <118941116.55779.1350449643273.JavaMail.jiratomcat@arcas>
Subject: [jira] [Created] (HDFS-4067) TestUnderReplicatedBlocks may fail due
 to ReplicaAlreadyExistsException
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Eli Collins created HDFS-4067:
---------------------------------

             Summary: TestUnderReplicatedBlocks may fail due to ReplicaAlreadyExistsException
                 Key: HDFS-4067
                 URL: https://issues.apache.org/jira/browse/HDFS-4067
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.0.0-alpha
            Reporter: Eli Collins


After adding the timeout to TestUnderReplicatedBlocks in HDFS-4061 we can see the root cause of the failure is ReplicaAlreadyExistsException:

{noformat}
org.apache.hadoop.hdfs.server.datanode.ReplicaAlreadyExistsException: Block BP-1541130889-172.29.121.238-1350435573411:blk_-3437032108997618258_1002 already exists in state FINALIZED and thus cannot be created.
	at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.createTemporary(FsDatasetImpl.java:799)
	at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.createTemporary(FsDatasetImpl.java:90)
	at org.apache.hadoop.hdfs.server.datanode.BlockReceiver.<init>(BlockReceiver.java:155)
	at org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:393)
	at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opWriteBlock(Receiver.java:98)
	at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:66)
	at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:219)
{noformat}

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