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Thread dump from hanging Java process

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Sep 25th, 2017
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  1. ┬─[xavion@Desktop:~]─[10:22:10]
  2. ╰─>$ java -version
  3. 2017-09-26 10:27:20
  4. Full thread dump OpenJDK 64-Bit Server VM (25.144-b01 mixed mode):
  5.  
  6. "Service Thread" #8 daemon prio=9 os_prio=0 tid=0x00007f30440c0000 nid=0x71ea runnable [0x0000000000000000]
  7. java.lang.Thread.State: RUNNABLE
  8.  
  9. "C1 CompilerThread2" #7 daemon prio=9 os_prio=0 tid=0x00007f30440bd000 nid=0x71e9 waiting on condition [0x0000000000000000]
  10. java.lang.Thread.State: RUNNABLE
  11.  
  12. "C2 CompilerThread1" #6 daemon prio=9 os_prio=0 tid=0x00007f30440bb000 nid=0x71e8 waiting on condition [0x0000000000000000]
  13. java.lang.Thread.State: RUNNABLE
  14.  
  15. "C2 CompilerThread0" #5 daemon prio=9 os_prio=0 tid=0x00007f30440b8000 nid=0x71e7 waiting on condition [0x0000000000000000]
  16. java.lang.Thread.State: RUNNABLE
  17.  
  18. "Signal Dispatcher" #4 daemon prio=9 os_prio=0 tid=0x00007f30440b4000 nid=0x71e6 waiting on condition [0x0000000000000000]
  19. java.lang.Thread.State: RUNNABLE
  20.  
  21. "Finalizer" #3 daemon prio=8 os_prio=0 tid=0x00007f3044084000 nid=0x71e5 in Object.wait() [0x00007f302dec0000]
  22. java.lang.Thread.State: WAITING (on object monitor)
  23. at java.lang.Object.wait(Native Method)
  24. - waiting on <0x0000000782108ec8> (a java.lang.ref.ReferenceQueue$Lock)
  25. at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
  26. - locked <0x0000000782108ec8> (a java.lang.ref.ReferenceQueue$Lock)
  27. at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
  28. at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)
  29.  
  30. "Reference Handler" #2 daemon prio=10 os_prio=0 tid=0x00007f304407f800 nid=0x71e4 in Object.wait() [0x00007f302dfc1000]
  31. java.lang.Thread.State: WAITING (on object monitor)
  32. at java.lang.Object.wait(Native Method)
  33. - waiting on <0x0000000782106b68> (a java.lang.ref.Reference$Lock)
  34. at java.lang.Object.wait(Object.java:502)
  35. at java.lang.ref.Reference.tryHandlePending(Reference.java:191)
  36. - locked <0x0000000782106b68> (a java.lang.ref.Reference$Lock)
  37. at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)
  38.  
  39. "main" #1 prio=5 os_prio=0 tid=0x00007f304400a000 nid=0x71de runnable [0x00007f304b58b000]
  40. java.lang.Thread.State: RUNNABLE
  41. at java.io.FileOutputStream.writeBytes(Native Method)
  42. at java.io.FileOutputStream.write(FileOutputStream.java:326)
  43. at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
  44. at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
  45. - locked <0x00000007821247e0> (a java.io.BufferedOutputStream)
  46. at java.io.PrintStream.write(PrintStream.java:482)
  47. - locked <0x00000007821247c0> (a java.io.PrintStream)
  48. at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
  49. at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
  50. at sun.nio.cs.StreamEncoder.flushBuffer(StreamEncoder.java:104)
  51. - locked <0x0000000782124888> (a java.io.OutputStreamWriter)
  52. at java.io.OutputStreamWriter.flushBuffer(OutputStreamWriter.java:185)
  53. at java.io.PrintStream.write(PrintStream.java:527)
  54. - locked <0x00000007821247c0> (a java.io.PrintStream)
  55. at java.io.PrintStream.print(PrintStream.java:669)
  56. at java.io.PrintStream.println(PrintStream.java:806)
  57. - locked <0x00000007821247c0> (a java.io.PrintStream)
  58. at sun.misc.Version.print(Version.java:102)
  59. at sun.misc.Version.print(Version.java:77)
  60.  
  61. "VM Thread" os_prio=0 tid=0x00007f3044077800 nid=0x71e3 runnable
  62.  
  63. "GC task thread#0 (ParallelGC)" os_prio=0 tid=0x00007f304401f800 nid=0x71df runnable
  64.  
  65. "GC task thread#1 (ParallelGC)" os_prio=0 tid=0x00007f3044021800 nid=0x71e0 runnable
  66.  
  67. "GC task thread#2 (ParallelGC)" os_prio=0 tid=0x00007f3044023000 nid=0x71e1 runnable
  68.  
  69. "GC task thread#3 (ParallelGC)" os_prio=0 tid=0x00007f3044025000 nid=0x71e2 runnable
  70.  
  71. "VM Periodic Task Thread" os_prio=0 tid=0x00007f30440c3000 nid=0x71eb waiting on condition
  72.  
  73. JNI global references: 3
  74.  
  75. Heap
  76. PSYoungGen total 55808K, used 1925K [0x0000000782100000, 0x0000000785f00000, 0x00000007c0000000)
  77. eden space 48128K, 4% used [0x0000000782100000,0x00000007822e14f0,0x0000000785000000)
  78. from space 7680K, 0% used [0x0000000785780000,0x0000000785780000,0x0000000785f00000)
  79. to space 7680K, 0% used [0x0000000785000000,0x0000000785000000,0x0000000785780000)
  80. ParOldGen total 126976K, used 0K [0x0000000706200000, 0x000000070de00000, 0x0000000782100000)
  81. object space 126976K, 0% used [0x0000000706200000,0x0000000706200000,0x000000070de00000)
  82. Metaspace used 2180K, capacity 4480K, committed 4480K, reserved 1056768K
  83. class space used 232K, capacity 384K, committed 384K, reserved 1048576K
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