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From jiang licht <licht_ji...@yahoo.com>
Subject add new data node failed: incompatible build version (CDH3)
Date Mon, 23 Aug 2010 21:00:23 GMT
The version for the current cluster is Cloudera 0.20.2+228

A newer version of CDH 0.20.2+320 is installed on a new machine to be used as a new datanode.
But it failed to join the cluster and the log is shown below. So, the build version of a data
node has to be exactly the same as the namenode or older?

/************************************************************
STARTUP_MSG: Starting DataNode
STARTUP_MSG:   host = hostname/ip
STARTUP_MSG:   args = []
STARTUP_MSG:   version = 0.20.2+320
STARTUP_MSG:   build =  -r 9b72d268a0b590b4fd7d13aca17c1c453f8bc957; compiled by 'root'
on Mon Jun 28 19:13:09 EDT 2010
************************************************************/
2010-08-23 15:29:13,832 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: Incompatible
build versions: namenode BV = cfc3233ece0769b11af9add328261295aaf4d1ad; datanode BV = 9b72d268a0b590b4fd7d13aca17c1c453f8bc957
2010-08-23 15:29:13,936 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException:
Incompatible build versions: namenode BV = cfc3233ece0769b11af9add328261295aaf4d1ad; datanode
BV = 9b72d268a0b590b4fd7d13aca17c1c453f8bc957
        at org.apache.hadoop.hdfs.server.datanode.DataNode.handshake(DataNode.java:459)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:291)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:232)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1363)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1318)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1326)
        at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1448)

2010-08-23 15:29:13,937 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:

/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at hostname/ip
************************************************************/

Thanks,

Michael


      
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