Hi there, I'm trying to upgrade from 0.94.6 (distributed mode) to 0.94.8 and I'm seeing strange WARN messages leading in region-less regionserver once updated.
Here is the kind of lines I can find: > WARN org.apache.hadoop.hbase.zookeeper.ZKAssign: regionserver:60020-0x23d207e751d20c4 Attempt to transition the unassigned node for 9a eb2d2c3e878ee50ad4806dd3488c15 from M_ZK_REGION_OFFLINE to RS_ZK_REGION_OPENING failed, the node existed but was in the state M_SERVER_SHUTDOWN set by the server my-server.org,60020,1373289114184 I've uploaded a longer extract including DEBUG traces to Pastebin: http://pastebin.com/raw.php?i=Me2esbPF I've performed as usual: stopping the RS, updating HBase binaries and libraries, then starting the RS... When digging into the log file, I can read one strange error ZK-related ("ZKW CONSTRUCTOR STACK TRACE FOR DEBUGGING"), see complete trace here: http://pastebin.com/raw.php?i=7wy0wdNq Any idea? -- Adrien Mogenet http://www.borntosegfault.com
