0
Ich versuche, durch ein Dokument zu analysieren und die Ergebnisse in eine Datenbank einzufügen. Das Dokument ist sehr groß (ein paar Millionen Datensätze) und ich versuche es Multithreaded mit Connection-Pooling über c3p0 und Stapelverarbeitung zu tun. Für alle 1000 Datensätze, die analysiert werden, spinne ich einen Thread aus, der ein PreparedStatement erstellt, die erforderliche Reihe von Werten einfügt und dann dem Stapel von PreparedStatement hinzufügt. Bei der executeBatch-Funktion hängt das Programm jedoch einfach, und nichts wird jemals in die Datenbank eingefügt. Ich frage mich, ob ich c3p0 falsch benutze oder ist es etwas anderes? Ich habe versucht, es auf den einen Thread zu beschränken und dachte, dass die Multithread-Ness das Problem sein könnte, aber selbst mit nur einem einzigen Thread hängt es immer noch an dem Ausführungs-Batch.Programm hängt auf executeBatch
Hier ist der Code, der den Faden spinnt sich aus:
service.submit(new ElementProcessor(source.getConnection(), fElements));
Quelle mein ComboPooledDataSource ist und der Service ist ein ExecutorService. Auch der Konstruktor für die ElementProcessor Klasse:
private Connection DB;
public ElementProcessor(Connection db, Element[] elements) {
DB = db;
try {
DB.setAutoCommit(false);
} catch (SQLException ex) {
}
this.elements = elements;
}
Der Stack-Trace aus dem JVM Thread-Dump:
2016-03-31 12:17:03
Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.40-b16 mixed mode):
"Attach Listener" #34 daemon prio=9 os_prio=31 tid=0x00007fdf6e000000 nid=0x3e0b waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"pool-1-thread-16" #33 prio=5 os_prio=31 tid=0x00007fdf6b970800 nid=0x8103 waiting on condition [0x0000700002b97000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-15" #32 prio=5 os_prio=31 tid=0x00007fdf6e276000 nid=0x7f03 waiting on condition [0x0000700002a94000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-14" #31 prio=5 os_prio=31 tid=0x00007fdf6b228800 nid=0x7d03 waiting on condition [0x0000700002991000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-13" #30 prio=5 os_prio=31 tid=0x00007fdf6c0b8000 nid=0x7b03 waiting on condition [0x000070000288e000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-12" #29 prio=5 os_prio=31 tid=0x00007fdf6b948000 nid=0x7903 waiting on condition [0x000070000278b000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-11" #28 prio=5 os_prio=31 tid=0x00007fdf6abf4000 nid=0x7703 waiting on condition [0x0000700002688000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-10" #27 prio=5 os_prio=31 tid=0x00007fdf6b1b0800 nid=0x7503 waiting on condition [0x0000700002585000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-9" #26 prio=5 os_prio=31 tid=0x00007fdf6d11c800 nid=0x7303 waiting on condition [0x0000700002482000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-8" #25 prio=5 os_prio=31 tid=0x00007fdf6c0fd800 nid=0x7103 waiting on condition [0x000070000237f000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-7" #24 prio=5 os_prio=31 tid=0x00007fdf6d9b1800 nid=0x6f03 waiting on condition [0x000070000227c000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-6" #23 prio=5 os_prio=31 tid=0x00007fdf6c1e8800 nid=0x6d03 waiting on condition [0x0000700002179000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-5" #22 prio=5 os_prio=31 tid=0x00007fdf6e835000 nid=0x6b03 waiting on condition [0x0000700002076000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-4" #21 prio=5 os_prio=31 tid=0x00007fdf6d958800 nid=0x6903 waiting on condition [0x0000700001f73000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-3" #20 prio=5 os_prio=31 tid=0x00007fdf6d138000 nid=0x6703 waiting on condition [0x0000700001e70000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-2" #19 prio=5 os_prio=31 tid=0x00007fdf6e189800 nid=0x6503 waiting on condition [0x0000700001d6d000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"pool-1-thread-1" #18 prio=5 os_prio=31 tid=0x00007fdf6c1c2800 nid=0x6303 waiting on condition [0x0000700001c6a000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x0000000772bcaca0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
"MySQL Statement Cancellation Timer" #17 daemon prio=5 os_prio=31 tid=0x00007fdf6d0c3000 nid=0x6103 in Object.wait() [0x0000700001b67000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x0000000772bce798> (a java.util.TaskQueue)
at java.lang.Object.wait(Object.java:502)
at java.util.TimerThread.mainLoop(Timer.java:526)
- locked <0x0000000772bce798> (a java.util.TaskQueue)
at java.util.TimerThread.run(Timer.java:505)
"C3P0PooledConnectionPoolManager[identityToken->2rvxu59f1l0as16hejmoc|6477463f, dataSourceName->com.mysql.jdbc.Driver]-DeferredStatementDestroyerThread-#0" #16 daemon prio=5 os_prio=31 tid=0x00007fdf6d058000 nid=0x5f03 in Object.wait() [0x0000700001a64000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x0000000772bcecf0> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:683)
- locked <0x0000000772bcecf0> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
"C3P0PooledConnectionPoolManager[identityToken->2rvxu59f1l0as16hejmoc|6477463f, dataSourceName->com.mysql.jdbc.Driver]-HelperThread-#2" #15 daemon prio=5 os_prio=31 tid=0x00007fdf6c07c800 nid=0x5d03 in Object.wait() [0x0000700001961000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x0000000772bcf1b0> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:683)
- locked <0x0000000772bcf1b0> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
"C3P0PooledConnectionPoolManager[identityToken->2rvxu59f1l0as16hejmoc|6477463f, dataSourceName->com.mysql.jdbc.Driver]-HelperThread-#1" #14 daemon prio=5 os_prio=31 tid=0x00007fdf6c07c000 nid=0x5b03 in Object.wait() [0x000070000185e000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x0000000772bcf1b0> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:683)
- locked <0x0000000772bcf1b0> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
"C3P0PooledConnectionPoolManager[identityToken->2rvxu59f1l0as16hejmoc|6477463f, dataSourceName->com.mysql.jdbc.Driver]-HelperThread-#0" #13 daemon prio=5 os_prio=31 tid=0x00007fdf6c0af000 nid=0x5903 in Object.wait() [0x000070000175b000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x0000000772bcf1b0> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:683)
- locked <0x0000000772bcf1b0> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
"C3P0PooledConnectionPoolManager[identityToken->2rvxu59f1l0as16hejmoc|6477463f, dataSourceName->com.mysql.jdbc.Driver]-AdminTaskTimer" #12 daemon prio=5 os_prio=31 tid=0x00007fdf6e008000 nid=0x5707 in Object.wait() [0x0000700001658000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x0000000772bcef08> (a java.util.TaskQueue)
at java.util.TimerThread.mainLoop(Timer.java:552)
- locked <0x0000000772bcef08> (a java.util.TaskQueue)
at java.util.TimerThread.run(Timer.java:505)
"Service Thread" #9 daemon prio=9 os_prio=31 tid=0x00007fdf6b84b000 nid=0x5303 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"C1 CompilerThread3" #8 daemon prio=9 os_prio=31 tid=0x00007fdf6b801000 nid=0x5103 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"C2 CompilerThread2" #7 daemon prio=9 os_prio=31 tid=0x00007fdf6a829800 nid=0x4f03 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"C2 CompilerThread1" #6 daemon prio=9 os_prio=31 tid=0x00007fdf6b028800 nid=0x4d03 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"C2 CompilerThread0" #5 daemon prio=9 os_prio=31 tid=0x00007fdf6b026800 nid=0x4b03 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"Signal Dispatcher" #4 daemon prio=9 os_prio=31 tid=0x00007fdf6b01f800 nid=0x3a0f runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"Finalizer" #3 daemon prio=8 os_prio=31 tid=0x00007fdf6b01d800 nid=0x3803 in Object.wait() [0x0000700000d3a000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x0000000772b9a640> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:142)
- locked <0x0000000772b9a640> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:158)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)
"Reference Handler" #2 daemon prio=10 os_prio=31 tid=0x00007fdf6b01c800 nid=0x3603 in Object.wait() [0x0000700000c37000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000006c1645268> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:502)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157)
- locked <0x00000006c1645268> (a java.lang.ref.Reference$Lock)
"main" #1 prio=5 os_prio=31 tid=0x00007fdf6b000800 nid=0x1703 in Object.wait() [0x0000700000219000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x0000000772c33978> (a com.mchange.v2.resourcepool.BasicResourcePool)
at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1465)
at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:644)
- locked <0x0000000772c33978> (a com.mchange.v2.resourcepool.BasicResourcePool)
at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:554)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutAndMarkConnectionInUse(C3P0PooledConnectionPool.java:758)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:685)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:140)
at xmltodb.XMLToDB.endElement(XMLToDB.java:103)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLNSDTDValidator.endNamespaceScope(XMLNSDTDValidator.java:266)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java:2005)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java:879)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1782)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2973)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at xmltodb.XMLToDB.main(XMLToDB.java:177)
"VM Thread" os_prio=31 tid=0x00007fdf6b01a000 nid=0x3403 runnable
"GC task thread#0 (ParallelGC)" os_prio=31 tid=0x00007fdf6b805800 nid=0x2403 runnable
"GC task thread#1 (ParallelGC)" os_prio=31 tid=0x00007fdf6b806000 nid=0x2603 runnable
"GC task thread#2 (ParallelGC)" os_prio=31 tid=0x00007fdf6b806800 nid=0x2803 runnable
"GC task thread#3 (ParallelGC)" os_prio=31 tid=0x00007fdf6b807000 nid=0x2a03 runnable
"GC task thread#4 (ParallelGC)" os_prio=31 tid=0x00007fdf6b808000 nid=0x2c03 runnable
"GC task thread#5 (ParallelGC)" os_prio=31 tid=0x00007fdf6b808800 nid=0x2e03 runnable
"GC task thread#6 (ParallelGC)" os_prio=31 tid=0x00007fdf6b809000 nid=0x3003 runnable
"GC task thread#7 (ParallelGC)" os_prio=31 tid=0x00007fdf6b809800 nid=0x3203 runnable
"VM Periodic Task Thread" os_prio=31 tid=0x00007fdf6c014800 nid=0x5503 waiting on condition
JNI global references: 241
c3p0 behandelt parallel dosierte Einsätze im Allgemeinen fein. Das erste, was Sie tun sollten, um dies zu debuggen, ist, den JVM-Thread-Stack abzulegen und genau zu sehen, wo der Hang ist. Überprüfen Sie natürlich auch Protokolle auf Warnmeldungen und Stack-Spuren. Wenn Sie Statement-Caching, MySQL und c3p0 verwenden, sollten Sie das c3p0-Configparam 'statementCacheNumDeferredCloseThreads' zu 1 hinzufügen, was um eine JDBC-Treiberfragilität herum funktioniert, die zu Freezes führen kann. –
Alle Thread-Stack-Dumps sehen ziemlich gleich aus, so dass sie definitiv auf etwas hängen. Ich habe den ursprünglichen Post so geändert, dass er den Stack-Trace enthält, da er nicht in die Kommentare passt. –
Interessantes Update: Also habe ich Auto Commit aktiviert, um zu sehen, ob es einen Unterschied machen würde und sicher, es waren 64.000 Datensätze drin, bevor es aufhörte. Es scheint also so, als würde man die Batch-Inserts ausführen, aber dann nach den Einfügungen etwas anderes aufhängen. –