Maybe you should check the JVM memory parameter -Xms and -Xmx to found memory usage.
At 2016-08-11 08:00:54, "Rahul R" <[email protected]> wrote: I have a drpc server running in nimbus server. After every 'X' minutes, I see the following in the drpc log === java.lang.OutOfMemoryError: Java heap space at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57) ~[na:1.8.0_91] at java.nio.ByteBuffer.allocate(ByteBuffer.java:335) ~[na:1.8.0_91] at org.apache.thrift7.server.TNonblockingServer$FrameBuffer.read(TNonblockingServer.java:491) ~[storm-core-0.9.6.jar:0.9.6] at org.apache.thrift7.server.TNonblockingServer$SelectThread.handleRead(TNonblockingServer.java:359) ~[storm-core-0.9.6.jar:0.9.6] at org.apache.thrift7.server.TNonblockingServer$SelectThread.select(TNonblockingServer.java:304) ~[storm-core-0.9.6.jar:0.9.6] at org.apache.thrift7.server.TNonblockingServer$SelectThread.run(TNonblockingServer.java:243) ~[storm-core-0.9.6.jar:0.9.6] ==== There is enough memory available in the system . ==== storm@alerts:~/apache-storm-0.9.6/logs$ free -m total used free shared buffers cached Mem: 7985 2217 5767 0 81 1203 -/+ buffers/cache: 932 7052 Swap: 0 0 0 ==== My DRPC Spout throws the following error ===== java.lang.RuntimeException: org.apache.thrift7.transport.TTransportException: java.net.ConnectException: Connection refused at backtype.storm.drpc.DRPCInvocationsClient.<init>(DRPCInvocationsClient.java:40) at backtype.storm.drpc.DRPCSpout.open(DRPCSpout.java:87) at backtype.storm.daemon.executor$fn3371$fn3386.invoke(executor.clj:529) at backtype.storm.util$async_loop$fn__460.invoke(util.clj:461) at clojure.lang.AFn.run(AFn.java:24) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.thrift7.transport.TTransportException: java.net.ConnectException: Connection refused at org.apache.thrift7.transport.TSocket.open(TSocket.java:183) at org.apache.thrift7.transport.TFramedTransport.open(TFramedTransport.java:81) at backtype.storm.drpc.DRPCInvocationsClient.connect(DRPCInvocationsClient.java:47) at backtype.storm.drpc.DRPCInvocationsClient.<init>(DRPCInvocationsClient.java:38) ... 5 more Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at org.apache.thrift7.transport.TSocket.open(TSocket.java:178) ... 8 more ======= Restarting the DRPC Server solves the problem for the moment. Is there any other better solution ? Thanks, ./Rahul
