APAR status
Closed as program error.
Error description
Error Message: RDMA Endpoint connect waits forever without event in multithreaded scenario. It happens intermittently. . Stack Trace: Using "kill -3", we can get below stack which shows the issueXMTHREADINFO "pool-2-thread-7" J9VMThread:0x00007FDCECC4FE00, j9thread_t:0x00007FDCECC4BB70, java/lang/Thread:0x00007FDCD406B478, state:R, prio=53XMJAVALTHREAD (java/lang/Thread getId:0x35, isDaemon:false)3XMTHREADINFO1 (native thread ID:0x1A77, native priority:0x5, native policy:UNKNOWN, vmstate:R, vm thread flags:0x00000001)3XMTHREADINFO2 (native stack address range from:0x00007FDCB0DCE000, to:0x00007FDCB0E0F000, size:0x41000)3XMCPUTIME CPU usage total: 135.820678986 secs, current category="Application"3XMHEAPALLOC Heap bytes allocated since last GC cycle=0 (0x0)3XMTHREADINFO3 Java callstack:4XESTACKTRACE at com/ibm/net/rdma/jverbs/verbs/NativeRdmaJVerbs.getCqEvent0(Nativ e Method)4XESTACKTRACE at com/ibm/net/rdma/jverbs/verbs/NativeRdmaJVerbs.getCQEvent(Native RdmaJVerbs.java:174(Compiled Code))4XESTACKTRACE at com/ibm/net/rdma/jverbs/verbs/CompletionChannel.getCQEvent(Compl etionChannel.java:75(Compiled Code))4XESTACKTRACE at com/ibm/jverbs/test/util/RdmaDataPath.checkCq(RdmaDataPath.java: 165(Compiled Code))4XESTACKTRACE at com/ibm/jverbs/test/util/RdmaDataPath.completeSGRecv(RdmaDataPat h.java:104(Compiled Code))4XESTACKTRACE at com/ibm/jverbs/test/verbs/client/JverbsRdmaClient.verbs_repeated SendRecv(JverbsRdmaClient.java:666)4XESTACKTRACE at sun/reflect/GeneratedMethodAccessor10.invoke(Bytecode PC:36)4XESTACKTRACE at sun/reflect/DelegatingMethodAccessorImpl.invoke(DelegatingMethod AccessorImpl.java:55(Compiled Code))4XESTACKTRACE at java/lang/reflect/Method.invoke(Method.java:495(Compiled Code))4XESTACKTRACE at org/testng/internal/MethodInvocationHelper.invokeMethod(MethodIn vocationHelper.java:80)4XESTACKTRACE at org/testng/internal/Invoker.invokeMethod(Invoker.java:702)4XESTA CKTRACE at org/testng/internal/Invoker.invokeTestMethod(Invoker.java:894)4X ESTACKTRACE at org/testng/internal/Invoker.invokeTestMethods(Invoker.java:1219) 4XESTACKTRACE at org/testng/internal/TestMethodWorker.invokeTestMethods(TestMetho dWorker.java:127)4XESTACKTRACE at org/testng/internal/TestMethodWorker.run(TestMethodWorker.java:1 11)4XESTACKTRACE at java/util/concurrent/ThreadPoolExecutor.runWorker(ThreadPoolExec utor.java:1153(Compiled Code))4XESTACKTRACE at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExe cutor.java:628)4XESTACKTRACE at java/lang/Thread.run(Thread.java:785) .
Local fix
Problem summary
RDMA Endpoint connect waits forever due to RDMA CONNECTION event misses.
Problem conclusion
Corrected event misses which is due to unexpected error. Tightened the exception handling. . This APAR will be fixed in the following Java Releases: 8 SR1 (8.0.1.0) 7 R1 SR3 (7.1.3.0) 7 SR9 (7.0.9.0) . Contact your IBM Product's Service Team for these Service Refreshes and Fix Packs. For those running stand-alone, information about the available Service Refreshes and Fix Packs can be found at: https://www.ibm.com/developerworks/java/jdk/
Temporary fix
Comments
APAR Information
APAR number
IV70977
Reported component name
JAVA CLASS LIBS
Reported component ID
620700130
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-03-12
Closed date
2015-04-06
Last modified date
2015-04-06
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
JAVA CLASS LIBS
Fixed component ID
620700130
Applicable component levels
R800 PSY
UP
R700 PSY
UP
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Document Information
Modified date:
22 February 2022