Have you checked limit.conf? >From the message it looks like the files opened at underlying system exceed its default limit.
On 28 April 2015 at 08:08, Edward J. Yoon <edwardy...@apache.org> wrote: > I tried to run BSP job using netty-based RPC instead of message > bundle, but I received "too many open files". > > -- > > attempt_201504280858_0001_000017_0: 15/04/28 08:28:17 INFO > ipc.AsyncClient: AsyncClient startup > attempt_201504280858_0001_000017_0: 15/04/28 08:28:21 ERROR > bsp.BSPTask: Error running bsp setup and bsp function. > attempt_201504280858_0001_000017_0: java.lang.IllegalStateException: > failed to create a child event loop > attempt_201504280858_0001_000017_0: at > io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:68) > attempt_201504280858_0001_000017_0: at > io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49) > attempt_201504280858_0001_000017_0: at > io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61) > attempt_201504280858_0001_000017_0: at > io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52) > attempt_201504280858_0001_000017_0: at > io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:44) > attempt_201504280858_0001_000017_0: at > io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:36) > attempt_201504280858_0001_000017_0: at > org.apache.hama.ipc.AsyncClient$Connection.<init>(AsyncClient.java:189) > attempt_201504280858_0001_000017_0: at > org.apache.hama.ipc.AsyncClient.getConnection(AsyncClient.java:989) > attempt_201504280858_0001_000017_0: at > org.apache.hama.ipc.AsyncClient.call(AsyncClient.java:838) > attempt_201504280858_0001_000017_0: at > org.apache.hama.ipc.AsyncRPC$Invoker.invoke(AsyncRPC.java:261) > attempt_201504280858_0001_000017_0: at > com.sun.proxy.$Proxy14.getProtocolVersion(Unknown Source) > attempt_201504280858_0001_000017_0: at > org.apache.hama.ipc.AsyncRPC.checkVersion(AsyncRPC.java:524) > attempt_201504280858_0001_000017_0: at > org.apache.hama.ipc.AsyncRPC.getProxy(AsyncRPC.java:509) > attempt_201504280858_0001_000017_0: at > org.apache.hama.ipc.AsyncRPC.getProxy(AsyncRPC.java:477) > attempt_201504280858_0001_000017_0: at > org.apache.hama.ipc.AsyncRPC.getProxy(AsyncRPC.java:435) > attempt_201504280858_0001_000017_0: at > org.apache.hama.ipc.AsyncRPC.getProxy(AsyncRPC.java:545) > attempt_201504280858_0001_000017_0: at > org.apache.hama.bsp.message.HamaAsyncMessageManagerImpl.getBSPPeerConnection(HamaAsyncMessageManagerImpl.java:155) > attempt_201504280858_0001_000017_0: at > org.apache.hama.bsp.message.HamaAsyncMessageManagerImpl.transfer(HamaAsyncMessageManagerImpl.java:203) > attempt_201504280858_0001_000017_0: at > org.apache.hama.bsp.BSPPeerImpl.sendDirectly(BSPPeerImpl.java:382) > attempt_201504280858_0001_000017_0: at > org.apache.hama.bsp.BSPPeerImpl.send(BSPPeerImpl.java:364) > attempt_201504280858_0001_000017_0: at > org.apache.hama.graph.GraphJobRunner.loadVertices(GraphJobRunner.java:467) > attempt_201504280858_0001_000017_0: at > org.apache.hama.graph.GraphJobRunner.setup(GraphJobRunner.java:128) > attempt_201504280858_0001_000017_0: at > org.apache.hama.bsp.BSPTask.runBSP(BSPTask.java:170) > attempt_201504280858_0001_000017_0: at > org.apache.hama.bsp.BSPTask.run(BSPTask.java:144) > attempt_201504280858_0001_000017_0: at > org.apache.hama.bsp.GroomServer$BSPPeerChild.main(GroomServer.java:1255) > attempt_201504280858_0001_000017_0: Caused by: > io.netty.channel.ChannelException: failed to open a new selector > attempt_201504280858_0001_000017_0: at > io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128) > attempt_201504280858_0001_000017_0: at > io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:120) > attempt_201504280858_0001_000017_0: at > io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87) > attempt_201504280858_0001_000017_0: at > io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:64) > attempt_201504280858_0001_000017_0: ... 24 more > attempt_201504280858_0001_000017_0: Caused by: java.io.IOException: > Too many open files > attempt_201504280858_0001_000017_0: at sun.nio.ch.IOUtil.makePipe(Native > Method) > attempt_201504280858_0001_000017_0: at > sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:65) > attempt_201504280858_0001_000017_0: at > sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:36) > attempt_201504280858_0001_000017_0: at > io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126) > attempt_201504280858_0001_000017_0: ... 27 more > attempt_201504280858_0001_000017_0: 15/04/28 08:28:21 INFO > ipc.AsyncServer: AsyncServer gracefully shutdown > > > -- > Best Regards, Edward J. Yoon
