Here's a sample of the master's logs from yesterday. It's not correlated exactly with the other pastebin log, but there's 3GB of this from yesterday: http://pastebin.com/wP2rNN1t
I'm am pushing the cluster a bit with importing data so testing the split code harder than normal. The regions are 500-1GB gzipped. I can look into it more but trying to figure out what to look for. Thanks Ted, Matt On Sat, Nov 3, 2012 at 2:03 PM, Ted Yu <[email protected]> wrote: > Matt: > This is the method which made the logging: > private static int tickleNodeSplit(ZooKeeperWatcher zkw, > HRegionInfo parent, HRegionInfo a, HRegionInfo b, ServerName > serverName, > final int znodeVersion) > throws KeeperException, IOException { > byte [] payload = Writables.getBytes(a, b); > return ZKAssign.transitionNode(zkw, parent, serverName, > EventType.RS_ZK_REGION_SPLIT, EventType.RS_ZK_REGION_SPLIT, > znodeVersion, payload); > } > > transitionZKNode() calls tickleNodeSplit() when waiting for master to split > the region. Obviously something caused the master not able to split. > > How large is the region ? > > Can you pastebin master log for that period of time ? > > Thanks > > On Sat, Nov 3, 2012 at 1:54 PM, Matt Corgan <[email protected]> wrote: > > > 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 > > >
