Sorry didn't see the bottom of this thread before! I like Maja's idea, some mega-supernode (thats a technical term) just sent that vertex so many messages that the byte buffer size overflowed on the right shift. I saw this problem in some other forms last summer. The number of other ways that number could go negative seem limited.
On Wed, Feb 20, 2013 at 3:41 PM, Eli Reisman <[email protected]>wrote: > I do know when you run out of memory it often looks like the logs are > fine, or seem to end in a wierd spot, but really the last X number of log > messages just doesn't get logged. Sometimes its worth looking at the worker > logs individually and one in every group of them will actually get a > sensible exception message logged. Don't know if thats the case though. I > would tend to agree with your intuition regarding the queues and > concurrency. > > On Tue, Feb 19, 2013 at 3:04 PM, Claudio Martella < > [email protected]> wrote: > >> Looking at the second line of the logs, it does not look like the case, >> but >> it could be. do you have any suggestion for the flags in particular? I'm >> running with -XX:+HeapDumpOnOutOfMemoryError now, and I don't get any >> dump. >> >> It could be the case, but the behavior is quite consistent currently, I'd >> get a Child error/OOM pretty soon in these cases. >> >> >> On Tue, Feb 19, 2013 at 11:45 PM, Avery Ching <[email protected]> wrote: >> >> > Can you add GC flags? Perhaps you are running into full GCs... >> > >> > >> > On 2/19/13 1:45 PM, Claudio Martella wrote: >> > >> >> I have not investigated further yet, but this does not look connected >> to >> >> ZK, but mostly to some concurrency on the queues. The number of >> requests >> >> stays to 29... >> >> >> >> >> >> On Tue, Feb 19, 2013 at 9:58 PM, Sebastian Schelter <[email protected]> >> >> wrote: >> >> >> >> For me, Giraph on Hadoop 1.0.4 runs into some kind of deadlock after >> the >> >>> input was loaded when using it with 200 workers on a billion-scale >> >>> graph.... >> >>> >> >>> I tried several versions of zookeeper, but nothing helped. >> >>> >> >>> Best, >> >>> Sebastian >> >>> >> >>> >> >>> On 19.02.2013 21:55, Claudio Martella wrote: >> >>> >> >>>> I'm running PR with trunk on yahoo webgraph across 528 workers and I >> get >> >>>> the workers hanging at the flushing: >> >>>> >> >>>> 2013-02-19 21:40:07,187 INFO >> org.apache.giraph.graph.**ComputeCallable: >> >>>> >> >>> call: >> >>> >> >>>> Computation took 28.386961 secs for 95 partitions on superstep 0. >> >>>> >> >>> Flushing >> >>> >> >>>> started >> >>>> 2013-02-19 21:40:07,604 INFO org.apache.giraph.worker.** >> >>>> BspServiceWorker: >> >>>> finishSuperstep: Waiting on all requests, superstep 0 Memory >> >>>> (free/total/max) = 5993.42M / 8661.44M / 14346.69M >> >>>> 2013-02-19 21:40:07,605 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 558 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 6.4758, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0003, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 27.083 >> >>>> 2013-02-19 21:40:26,717 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 39 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 3.7965, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0.0001, MBytesSent = 175.3834, MBytesReceived = 0.0068, ave sent req >> >>>> >> >>> MBytes >> >>> >> >>>> = 0.2998, ave received req MBytes = 0, secs waited = 46.195 >> >>>> 2013-02-19 21:40:32,248 INFO >> >>>> org.apache.giraph.comm.netty.**handler.RequestDecoder: decode: Server >> >>>> >> >>> window >> >>> >> >>>> metrics MBytes/sec sent = 0.0002, MBytes/sec received = 3.9824, >> >>>> >> >>> MBytesSent >> >>> >> >>>> = 0.0066, MBytesReceived = 155.4787, ave sent req MBytes = 0, ave >> >>>> >> >>> received >> >>> >> >>>> req MBytes = 0.0155, secs waited = 39.04 >> >>>> 2013-02-19 21:40:42,041 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 36 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 2.8509, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0.0001, MBytesSent = 175.3834, MBytesReceived = 0.0068, ave sent req >> >>>> >> >>> MBytes >> >>> >> >>>> = 0.2998, ave received req MBytes = 0, secs waited = 61.519 >> >>>> 2013-02-19 21:41:07,456 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 2.0174, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0.0001, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> >>>> >> >>> MBytes >> >>> >> >>>> = 0.2998, ave received req MBytes = 0, secs waited = 86.933 >> >>>> 2013-02-19 21:41:22,456 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 1.7205, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0.0001, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> >>>> >> >>> MBytes >> >>> >> >>>> = 0.2998, ave received req MBytes = 0, secs waited = 101.934 >> >>>> 2013-02-19 21:41:37,457 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 1.4998, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0.0001, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> >>>> >> >>> MBytes >> >>> >> >>>> = 0.2998, ave received req MBytes = 0, secs waited = 116.935 >> >>>> 2013-02-19 21:41:52,458 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 1.3293, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0.0001, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> >>>> >> >>> MBytes >> >>> >> >>>> = 0.2998, ave received req MBytes = 0, secs waited = 131.936 >> >>>> 2013-02-19 21:42:22,459 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 1.083, MBytes/sec >> received >> >>>> = >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 161.937 >> >>>> 2013-02-19 21:42:37,460 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.9912, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 176.938 >> >>>> 2013-02-19 21:43:07,461 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.8475, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 206.939 >> >>>> 2013-02-19 21:43:37,462 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.7402, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 236.94 >> >>>> 2013-02-19 21:43:52,463 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.6961, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 251.941 >> >>>> 2013-02-19 21:44:07,464 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.657, MBytes/sec >> received >> >>>> = >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 266.942 >> >>>> 2013-02-19 21:44:37,465 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.5906, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 296.943 >> >>>> 2013-02-19 21:45:07,466 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.5364, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 326.944 >> >>>> 2013-02-19 21:45:22,467 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.5129, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 341.945 >> >>>> 2013-02-19 21:45:37,468 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.4913, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 356.946 >> >>>> 2013-02-19 21:46:07,469 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.4532, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 386.947 >> >>>> 2013-02-19 21:46:22,470 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.4363, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 401.948 >> >>>> 2013-02-19 21:46:52,471 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.406, MBytes/sec >> received >> >>>> = >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 431.949 >> >>>> 2013-02-19 21:47:07,472 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.3924, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 446.95 >> >>>> 2013-02-19 21:47:37,473 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.3677, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 476.951 >> >>>> 2013-02-19 21:48:07,474 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.346, MBytes/sec >> received >> >>>> = >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 506.952 >> >>>> 2013-02-19 21:48:22,475 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.336, MBytes/sec >> received >> >>>> = >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 521.953 >> >>>> 2013-02-19 21:48:52,476 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.3177, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 551.954 >> >>>> 2013-02-19 21:49:07,477 INFO org.apache.giraph.comm.netty.** >> >>>> NettyClient: >> >>>> waitSomeRequests: Waiting interval of 15000 msecs, 29 open requests, >> >>>> waiting for it to be <= 0, MBytes/sec sent = 0.3093, MBytes/sec >> received >> >>>> >> >>> = >> >>> >> >>>> 0, MBytesSent = 175.3834, MBytesReceived = 0.0069, ave sent req >> MBytes = >> >>>> 0.2998, ave received req MBytes = 0, secs waited = 566.955 >> >>>> >> >>>> It looks similar to the problem we had earlier with concurrency. >> >>>> >> >>>> Are you guys experiencing something similar at large-scale? >> >>>> >> >>>> >> >>> >> >> >> > >> >> >> -- >> Claudio Martella >> [email protected] >> > >
