The only time you would need to upgrade is if you've increased the Hadoop version but are retaining the same HDFS :) So, that's the normal case.
What does "netstat --listening --numeric --program" report? - Aaron On Wed, Aug 5, 2009 at 10:53 AM, bharath vissapragada < [email protected]> wrote: > yes .. I have stopped all the daemons ... when i use jps ...i get only ... > "<pid> Jps" > > Actually .. i upgraded the version from 18.2 to 19.x on the same path of > hdfs .. is it a problem? > > > On Wed, Aug 5, 2009 at 11:02 PM, Aaron Kimball <[email protected]> wrote: > > > Are you sure you stopped all the daemons? Use 'sudo jps' to make sure :) > > - Aaron > > > > On Mon, Aug 3, 2009 at 7:26 PM, bharath vissapragada < > > [email protected]> wrote: > > > > > Todd thanks for replying .. > > > > > > I stopped the cluster and issued the command > > > > > > "bin/hadoop namenode -upgrade" and iam getting this exception > > > > > > 09/08/04 07:52:39 ERROR namenode.NameNode: java.net.BindException: > > Problem > > > binding to master/10.2.24.21:54310 : Address already in use > > > at org.apache.hadoop.ipc.Server.bind(Server.java:171) > > > at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:234) > > > at org.apache.hadoop.ipc.Server.<init>(Server.java:960) > > > at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:465) > > > at org.apache.hadoop.ipc.RPC.getServer(RPC.java:427) > > > at > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:153) > > > at > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:208) > > > at > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:194) > > > at > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:859) > > > at > > > org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:868) > > > Caused by: java.net.BindException: Address already in use > > > at sun.nio.ch.Net.bind(Native Method) > > > at > > > > sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:119) > > > at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59) > > > at org.apache.hadoop.ipc.Server.bind(Server.java:169) > > > ... 9 more > > > > > > any clue? > > > > > > On Tue, Aug 4, 2009 at 12:51 AM, Todd Lipcon <[email protected]> > wrote: > > > > > > > On Mon, Aug 3, 2009 at 12:08 PM, bharath vissapragada < > > > > [email protected]> wrote: > > > > > > > > > Hi all , > > > > > > > > > > I have noticed some problem in my cluster when i changed the hadoop > > > > version > > > > > on the same DFS directory .. The namenode log on the master says > the > > > > > following .. > > > > > > > > > > > > > > > ile system image contains an old layout version -16. > > > > > *An upgrade to version -18 is required. > > > > > Please restart NameNode with -upgrade option. > > > > > * > > > > > > > > > > > > See bolded text above -- you need to run namenode -upgrade to upgrade > > > your > > > > metadata format to the current version. > > > > > > > > -Todd > > > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:312) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:87) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:309) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:288) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:163) > > > > > at > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:208) > > > > > at > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:194) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:859) > > > > > at > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:868) > > > > > 2009-08-04 00:27:51,498 INFO org.apache.hadoop.ipc.Server: Stopping > > > > server > > > > > on 54310 > > > > > 2009-08-04 00:27:51,498 ERROR > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode: > java.io.IOException: > > > > > File system image contains an old layout version -16. > > > > > An upgrade to version -18 is required. > > > > > Please restart NameNode with -upgrade option. > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:312) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:87) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:309) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:288) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:163) > > > > > at > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:208) > > > > > at > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:194) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:859) > > > > > at > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:868) > > > > > > > > > > 2009-08-04 00:27:51,499 INFO > > > > > org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG > > > > > > > > > > Can anyone explain me the reason ... i googled it .. but those > > > > explanations > > > > > weren't quite useful > > > > > > > > > > Thanks > > > > > > > > > > > > > > >
