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From "Ravi Hemnani (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-10180) Getting some error while increasing the hadoop cluster size.
Date Mon, 23 Dec 2013 15:06:51 GMT
Ravi Hemnani created HADOOP-10180:
-------------------------------------

             Summary: Getting some error while increasing the hadoop cluster size. 
                 Key: HADOOP-10180
                 URL: https://issues.apache.org/jira/browse/HADOOP-10180
             Project: Hadoop Common
          Issue Type: Task
            Reporter: Ravi Hemnani
            Priority: Trivial


We have a 5-node hadoop cluster and we are trying to increase the size of the cluster. We
have added 2 new disks to each of the 5-boxes and we followed all the steps of putting the
disk to the hadoop cluster. Everything works fine except when we restart a datanode, there
are errors multiple times in the log file. Following is the error which appears in the log
files, 

2013-12-23 14:32:19,406 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeRegistration(172.16.200.128:50010,
storageID=DS-1937554000-172.16.200.128-50010-1376068931321, infoPort=50075, ipcPort=50020):DataXceiver
org.apache.hadoop.hdfs.server.datanode.BlockAlreadyExistsException: Block blk_-8997395530627676954_276834
is valid, and cannot be written to.
	at org.apache.hadoop.hdfs.server.datanode.FSDataset.writeToBlock(FSDataset.java:1428)
	at org.apache.hadoop.hdfs.server.datanode.BlockReceiver.<init>(BlockReceiver.java:114)
	at org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:302)
	at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:112)
	at java.lang.Thread.run(Thread.java:724)





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