Does this just address your symptom? I'd be concerned that there was a recovery issue that put the Accumulo instance in this state and with the change in effect nobody would know about it.
On Tue, Jun 12, 2012 at 10:25 PM, David Medinets <[email protected]> wrote: > I am greping source left and right but am not sure what to make of > this error. Here is the code from Master.java: > > ZooReaderWriter.getInstance().getChildren(zroot + > Constants.ZRECOVERY, new Watcher() { > @Override > public void process(WatchedEvent event) { > nextEvent.event("Noticed recovery changes", event.getType()); > } > }); > > I suggest replacing the above code with this: > > final String recoveryPath = zroot + Constants.ZRECOVERY; > Stat stat = > ZooReaderWriter.getInstance().getZooKeeper().exists(recoveryPath, > null); > if (stat != null && stat.getNumChildren() > 0) { > ZooReaderWriter.getInstance().getChildren(recoveryPath, new Watcher() { > @Override > public void process(WatchedEvent event) { > nextEvent.event("Noticed recovery changes", event.getType()); > } > }); > } > > I have changed my local Accumulo and this change seems to be Ok. > However, since this is a change to Accumulo itself, I would like > someone to code review before I commit this change. Does this change > make sense? > > On Mon, Jun 11, 2012 at 9:54 PM, David Medinets > <[email protected]> wrote: >> I am slowly working my way through whatever went wrong on my system. >> This is the latest. I've deleted the logs and started the master by >> hand: >> >> accumulo org.apache.accumulo.server.master.state.SetGoalState NORMAL >> start-server.sh localhost master >> >> Then checked the log files where I saw this message: >> >> org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode >> = NoNode for /accumulo/b519799c-3a51-4c9b-af21-96d577e2c11f/recovery >> at >> org.apache.zookeeper.KeeperException.create(KeeperException.java:111) >> at >> org.apache.zookeeper.KeeperException.create(KeeperException.java:51) >> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1448) >> at >> org.apache.accumulo.core.zookeeper.ZooReader.getChildren(ZooReader.java:62) >> at org.apache.accumulo.server.master.Master.run(Master.java:2071) >> at org.apache.accumulo.server.master.Master.main(Master.java:2173) >> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >> at >> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) >> at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >> at java.lang.reflect.Method.invoke(Method.java:601) >> >> I've run out of time for debugging today. I'll dig into the source >> code more tomorrow ... until someone can point me in the right >> direction to resolve this?
