We upgraded from .94.0 to .94.2 last week and have started to encounter infinite loops of region-transition on splits. I'm not sure yet if it's all splits nor if it's related to load. Solution so far has been to restart the regionserver process.
log snippet: http://pastebin.com/LpienZ7B It's repeating these two lines: 2012-11-02 01:35:33,312 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign: regionserver:60020-0x13ab46479832b76 Attempting to transition node cf3e9bc069e1888983c06dc8e053ffcf from RS_ZK_REGION_SPLIT to RS_ZK_REGION_SPLIT 2012-11-02 01:35:33,364 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign: regionserver:60020-0x13ab46479832b76 Successfully transitioned node cf3e9bc069e1888983c06dc8e053ffcf from RS_ZK_REGION_SPLIT to RS_ZK_REGION_SPLIT with the occasional: 2012-11-02 01:35:34,476 DEBUG org.apache.hadoop.hbase.regionserver.SplitTransaction: Still waiting on the master to process the split for cf3e9bc069e1888983c06dc8e053ffcf Should the region transition from RS_ZK_REGION_SPLIT to itself? It looks wrong, but I'm not familiar with the code at all. Thanks, Matt
