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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3900) TestInjectionForSimulatedStorage only works on a clean directory structure
Date Tue, 05 Aug 2008 15:02:46 GMT
TestInjectionForSimulatedStorage only works on a clean directory structure
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                 Key: HADOOP-3900
                 URL: https://issues.apache.org/jira/browse/HADOOP-3900
             Project: Hadoop Core
          Issue Type: Bug
          Components: test
            Reporter: Steve Loughran


I've been getting intermittent failures on org.apache.hadoop.hdfs.TestInjectionForSimulatedStorage

Timedout while waiting for all blocks to be replicated for /replication-test-file

java.io.IOException: Timedout while waiting for all blocks to be replicated for /replication-test-file
at org.apache.hadoop.hdfs.TestInjectionForSimulatedStorage.waitForBlockReplication(TestInjectionForSimulatedStorage.java:100)
at org.apache.hadoop.hdfs.TestInjectionForSimulatedStorage.testInjection(TestInjectionForSimulatedStorage.java:151)

Here's how to replicate it: run the test twice. 

When run the second time, the trace is full of log messages like :
2008-08-05 11:12:46,108 [org.apache.hadoop.hdfs.server.datanode.DataNode$DataXceiver@3cc66e]
INFO  datanode.DataNode - Receiving block blk_-5590567767202552997_1001 src: /127.0.0.1:41792
dest: /127.0.0.1:46976
2008-08-05 11:12:46,108 [org.apache.hadoop.hdfs.server.datanode.DataNode$DataXceiver@3cc66e]
INFO  datanode.DataNode - writeBlock blk_-5590567767202552997_1001 received exception java.io.IOException:
Block blk_-5590567767202552997_1001 is valid, and cannot be written to.
2008-08-05 11:12:46,108 [org.apache.hadoop.hdfs.server.datanode.DataNode$DataXceiver@3cc66e]
ERROR datanode.DataNode - DatanodeRegistration(127.0.0.1:46976, storageID=DS-1340877566-127.0.1.1-0-1217931159994,
infoPort=56552, ipcPort=60571):DataXceiver: java.io.IOException: Block blk_-5590567767202552997_1001
is valid, and cannot be written to.
	at org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset.writeToBlock(SimulatedFSDataset.java:370)
	at org.apache.hadoop.hdfs.server.datanode.DataNode$BlockReceiver.<init>(DataNode.java:2405)
	at org.apache.hadoop.hdfs.server.datanode.DataNode$DataXceiver.writeBlock(DataNode.java:1266)
	at org.apache.hadoop.hdfs.server.datanode.DataNode$DataXceiver.run(DataNode.java:1124)
	at java.lang.Thread.run(Thread.java:619)

Am I the only person seeing this? 

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