Sebastian, how many input splits do you have? What is the last line you see in the logs? We had some problems with zookeeper whit a lot of input splits (order of 10k), which we fixed by increasing the heap size for zookeeper (changing giraph.zkJavaOpts). You can try doing that and see if it helps.
On 2/19/13 12:58 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? >> >
