Thanks alot arpit : I will try this first thing in the morning. For now --- I need a glass of wine.
Jay Vyas MMSB UCHC On Mar 30, 2012, at 10:38 PM, Arpit Gupta <ar...@hortonworks.com> wrote: > the namespace id is persisted on the datanode data directories. As you > formatted the namenode these id's no longer match. > > So stop the datanode clean up your dfs.data.dir on your system which from the > logs seems to be "/private/tmp/hadoop-Jpeerindex/dfs/data" and then start the > datanode. > > -- > Arpit Gupta > Hortonworks Inc. > http://hortonworks.com/ > > On Mar 30, 2012, at 2:33 PM, Jay Vyas wrote: > >> Hi guys ! >> >> This is very strange - I have formatted my namenode (psuedo distributed >> mode) and now Im getting some kind of namespace error. >> >> Without further ado : here is the interesting output of my logs . >> >> >> Last login: Fri Mar 30 19:29:12 on ttys009 >> doolittle-5:~ Jpeerindex$ >> doolittle-5:~ Jpeerindex$ >> doolittle-5:~ Jpeerindex$ cat Development/hadoop-0.20.203.0/logs/* >> 2012-03-30 22:28:31,640 INFO >> org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG: >> /************************************************************ >> STARTUP_MSG: Starting DataNode >> STARTUP_MSG: host = doolittle-5.local/192.168.3.78 >> STARTUP_MSG: args = [] >> STARTUP_MSG: version = 0.20.203.0 >> STARTUP_MSG: build = >> http://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20-security-203-r >> 1099333; compiled by 'oom' on Wed May 4 07:57:50 PDT 2011 >> ************************************************************/ >> 2012-03-30 22:28:32,138 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: >> loaded properties from hadoop-metrics2.properties >> 2012-03-30 22:28:32,190 INFO >> org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source >> MetricsSystem,sub=Stats registered. >> 2012-03-30 22:28:32,191 INFO >> org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot >> period at 10 second(s). >> 2012-03-30 22:28:32,191 INFO >> org.apache.hadoop.metrics2.impl.MetricsSystemImpl: DataNode metrics system >> started >> 2012-03-30 22:28:32,923 INFO >> org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi >> registered. >> 2012-03-30 22:28:32,959 WARN >> org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi already >> exists! >> 2012-03-30 22:28:34,478 INFO org.apache.hadoop.ipc.Client: Retrying connect >> to server: localhost/127.0.0.1:9000. Already tried 0 time(s). >> 2012-03-30 22:28:36,317 ERROR >> org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: >> Incompatible namespaceIDs in /private/tmp/hadoop-Jpeerindex/dfs/data: >> namenode namespaceID = 1829914379; datanode namespaceID = 1725952472 >> at >> org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:232) >> at >> org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:147) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:354) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:268) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1480) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1419) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1437) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1563) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1573) >
