Hi Sebastian, I do not know what is happening, I am also having problems of jobs blocking while waiting to setup the zookeeper instance. We should look into this.
Best, Claudio On Mon, Jan 21, 2013 at 1:59 PM, Sebastian Schelter <s...@apache.org> wrote: > Hi, > > I'm testing a custom PageRank implementation using trunk on Hadoop > 1.0.4. I seem to run into a deadlock after the input superstep. > > The workers report "finishSuperstep: (all workers done) WORKER_ONLY - > Attempt=0, Superstep=0" and the master reports that all workers are done > with superstep -1. > > I reconstructed this using a local setup and seems to me that the > BspServiceMaster hangs in the cleanUpZooKeeper method infinitely. > > I'm not using a dedicated zk instance, I just have Giraph start one. Any > ideas what can be done to fix my problem? > > Best, > Sebastian > > > excerpt from jstack > > "org.apache.giraph.master.MasterThread" prio=10 tid=0x00007f29fc385000 > nid=0x29d1 waiting on condition [0x00007f2a09a5f000] > java.lang.Thread.State: TIMED_WAITING (parking) > at sun.misc.Unsafe.park(Native Method) > - parking to wait for <0x00000000f38967d8> (a > java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) > at > java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198) > at > > java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2116) > at > org.apache.giraph.zk.PredicateLock.waitMsecs(PredicateLock.java:112) > at > org.apache.giraph.zk.PredicateLock.waitForever(PredicateLock.java:138) > at > > org.apache.giraph.master.BspServiceMaster.cleanUpZooKeeper(BspServiceMaster.java:1602) > at > > org.apache.giraph.master.BspServiceMaster.cleanup(BspServiceMaster.java:1692) > at org.apache.giraph.master.MasterThread.run(MasterThread.java:144) > > > -- Claudio Martella claudio.marte...@gmail.com
