Hi Dear,
I have a small test cluster with hadoop-2.0x, and HA configuraded, but I
want to upgrade to hadoop-2.2.
I dont't want to stop cluster during upgrade, so my steps are:
1) on standby NN: hadoop-dameon.sh stop namenode
2) remove HA configuration in the conf
3) hadoop-daemon.sh start namenode -upgrade -clusterID test-cluster
but Exception in the NN log, so how to upgrade and don't stop the whole
cluster.
Thanks.
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException:
Directory /hdfs/name is in an inconsistent state: previous fs state should
not exist during upgrade. Finalize or rollback first.
at
org.apache.hadoop.hdfs.server.namenode.FSImage.doUpgrade(FSImage.java:323)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:248)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:858)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:620)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:445)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:494)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:692)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:677)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1279)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1345)
