Hi Experts, My hadoop cluster is enabled HA with QJM and I failed to upgrade it from version 2.2.0 to 2.4.1. Why? Is this a existing issue?
My steps: 1. Stop hadoop cluster 2. On each node, upgrade hadoop binary with the newer version 3. On each JournalNode: sbin/hadoop-daemon.sh start journalnode 4. On each DataNode: sbin/hadoop-daemon.sh start datanode 5. On previous active NameNode: sbin/hadoop-daemon.sh start namenode -upgrade 6. On previous standby NameNode: sbin/hadoop-daemon.sh start namenode -bootstrapStandby Encountered Issue: Failed to start NameNode service normally with a warning info as below: 2014-09-10 15:57:41,730 WARN org.apache.hadoop.hdfs.server.common.Util: Path /hadoop/hdfs/name should be specified as a URI in configuration files. Please update hdfs configuration. After throwing out above warning info, the execution of command hangs there and did not throw any other warning/error messages any more. Thanks!
