It seems the upstream fix is in Thrift 0.9.3. Now, I think I pasted the wrong dependency in the email below, but changing the variable "thrift.version" to 0.9.3 simply resulted in a build failure:
[ERROR] Failed to execute goal on project org.apache.stratos.common: Could not resolve dependencies for project org.apache.stratos:org.apache.stratos.common:bundle:4.1.0: Could not find artifact org.wso2.carbon:org.wso2.carbon.databridge.agent.thrift:jar:0.9.3 in central (http://repo1.maven.org/maven2) -> [Help 1] I'm not sure (a) if I got the right variable, and if I did (b) why it did not work. How else do I get the fix? From: Shaheedur Haque (shahhaqu) Sent: 23 November 2015 13:46 To: d...@stratos.incubator.apache.org Cc: Martin Eppel (meppel); Ali Bidabadi (abidabad) Subject: File handle leak in Thrift Hi all, I believe that Stratos is missing a memory leak fix in libthrift_0.7.0.wso2v2.jar as follows... 1. For unknown reasons, we sometimes get Stratos' memory footprint growing from the normal "1.0something" GB of virtual memory to 10 GB and then 34 GB in a matter of seconds: top - 21:21:55 up 4:39, 1 user, load average: 0.01, 0.08, 0.18 Tasks: 135 total, 3 running, 132 sleeping, 0 stopped, 0 zombie %Cpu(s): 2.5 us, 0.9 sy, 0.0 ni, 95.3 id, 1.1 wa, 0.0 hi, 0.1 si, 0.0 st KiB Mem: 16434456 total, 9867416 used, 6567040 free, 95772 buffers KiB Swap: 0 total, 0 used, 0 free. 6485696 cached Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2913 netiq 20 0 4702012 1.083g 18976 S 2.9 6.9 1:28.04 java 2741 root 20 0 3395640 600544 14504 S 1.8 3.7 0:34.09 java 25941 root 20 0 186084 37700 26636 S 0.7 0.2 1:48.86 corosync ... top - 21:23:55 up 4:41, 1 user, load average: 1.08, 0.55, 0.35 Tasks: 137 total, 3 running, 134 sleeping, 0 stopped, 0 zombie %Cpu(s): 34.1 us, 10.8 sy, 0.0 ni, 45.9 id, 0.9 wa, 0.0 hi, 8.3 si, 0.0 st KiB Mem: 16434456 total, 10957936 used, 5476520 free, 96024 buffers KiB Swap: 0 total, 0 used, 0 free. 6599088 cached Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2913 netiq 20 0 10.236g 1.411g 18956 S 91.0 9.0 3:17.37 java 2741 root 20 0 3395776 621352 14520 S 12.3 3.8 0:48.84 java 25941 root 20 0 186084 37700 26636 S 0.7 0.2 1:49.68 corosync ... 2. The logs fill very rapidly at this point, so all we see is that after the fact, all 10 GB of logs look like this: TID: [0] [STRATOS] [2015-11-22 21:27:22,795] WARN {org.apache.thrift.server.TThreadPoolServer} - Transport error occurred during acceptance of message. org.apache.thrift.transport.TTransportException: java.net.SocketException: Too many open files at org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:118) at org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:35) at org.apache.thrift.transport.TServerTransport.accept(TServerTransport.java:31) at org.apache.thrift.server.TThreadPoolServer.serve(TThreadPoolServer.java:106) at org.wso2.carbon.databridge.receiver.thrift.internal.ThriftDataReceiver$ServerThread.run(ThriftDataReceiver.java:199) at java.lang.Thread.run(Thread.java:745) Caused by: java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398) at java.net.ServerSocket.implAccept(ServerSocket.java:530) at java.net.ServerSocket.accept(ServerSocket.java:498) at org.apache.thrift.transport.TServerSocket.acceptImpl(TServerSocket.java:113) ... 5 more Now a cursory glance at upstream shows this was probably fixed upstream in 2015: https://git-wip-us.apache.org/repos/asf?p=thrift.git;a=commitdiff;h=b1a35da9168cca5a7524ab9814161f024da145df and given that our 0.7.0 jar file has content dated 2011, it likely does not have the fix. I also note that upstream has evolved considerably overall. Now, what I am not sure of is whether we are using an old library for some specific reason, e.g. was it hacked/modified by wso2? Is the new code not compatible with the Stratos codebase? If I am looking in the right place, the stratos/components/org.apache.stratos.common/pom.xml seems to be picking up a specific version: <dependency> <groupId>org.wso2.carbon</groupId> <artifactId>org.wso2.carbon.databridge.agent.thrift</artifactId> <version>${wso2carbon.version}</version> </dependency> Do we know why? How to go about getting the fix? Please advise, Thanks, Shaheed
