Sorry, I'd missed this message. I just created ZOOKEEPER-1333 for the same issue.
-Andrew On Mon, Dec 19, 2011 at 2:48 PM, Jeremy Stribling <[email protected]> wrote: > I'm seeing a NullPointerException in ZK 3.4.1, and it seems to usually > happen when I restart a server from standalone mode into quorum mode. It > doesn't happen every time, but I can reproduce it pretty reliably in my > tests: > > 2011-12-19 14:33:04,036 2195 [pool-1-thread-2] INFO > org.apache.zookeeper.server.quorum.QuorumPeer - tickTime set to 3000 > 2011-12-19 14:33:04,036 2195 [pool-1-thread-2] INFO > org.apache.zookeeper.server.quorum.QuorumPeer - initLimit set to 5 > 2011-12-19 14:33:04,038 2197 [pool-1-thread-2] INFO > org.apache.zookeeper.server.persistence.FileSnap - Reading snapshot > <zkdir>/version-2/snapshot.0 > 2011-12-19 14:33:04,040 2199 [pool-1-thread-2] DEBUG > org.apache.zookeeper.server.persistence.FileTxnLog - Created new input > stream <zkdir>/version-2/log.1 > 2011-12-19 14:33:04,041 2200 [pool-1-thread-2] DEBUG > org.apache.zookeeper.server.persistence.FileTxnLog - Created new input > archive <zkdir>/version-2/log.1 > 2011-12-19 14:33:04,041 2200 [pool-1-thread-2] DEBUG > org.apache.zookeeper.server.DataTree - Ignoring processTxn failure hdr: -1 > : error: -101 > java.lang.NullPointerException > at > org.apache.zookeeper.server.persistence.FileTxnSnapLog.processTransaction(FileTxnSnapLog.java:203) > at > org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:150) > at > org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:223) > at > org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:418) > at > org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:410) > at > com.nicira.onix.zookeeper.Zookeeper.StartZookeeper(Zookeeper.java:203) > at > com.nicira.onix.zookeeper.Zookeeper.RestartZookeeper(Zookeeper.java:282) > at com.nicira.onix.zookeeper.ZKRPCService.setServers(ZKRPC.java:83) > at > com.nicira.onix.zookeeper.Zkrpc$ZKRPCService.callMethod(Zkrpc.java:8487) > at com.nicira.onix.rpc.RPC$10.run(RPC.java:534) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) > at java.lang.Thread.run(Thread.java:636) > > (Note that I've replaced my zookeeper directory in the message above with > <zkdir> for readability.) > > It appears to be a problem in the on-disk data, since if I then try starting > up a standalone server with the same directory, I get the same error. I've > attached a tarball containing the version-2 directory that demonstrates the > problem. > > If folks think this is a real problem in supported Zookeeper configurations, > I'll happily open a JIRA. > > Jeremy >
