Hi, I encountered an issue which hangs the decommission operatoin. Its steps: 1. Install a Hadoop 1.1.1 cluster, with 2 datanodes: dn1 and dn2. And, in hdfs-site.xml, set the 'dfs.replication' to 2 2. Add node dn3 into the cluster as a new datanode, and did not change the ' dfs.replication' value in hdfs-site.xml and keep it as 2 note: step 2 passed 3. Decommission dn3 from the cluster
Expected result: dn3 could be decommissioned successfully Actual result: decommission progress hangs and the status always be 'Waiting DataNode status: Decommissioned' However, if the initial cluster includes >= 3 datanodes, this issue won't be encountered when add/remove another datanode. Also, after step 2, I noticed that some block's expected replicas is 3, but the 'dfs.replication' value in hdfs-site.xml is always 2! Could anyone pls help provide some triages? Thanks in advance!
