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Posted to notifications@accumulo.apache.org by GitBox <gi...@apache.org> on 2018/06/29 18:49:42 UTC

[GitHub] mikewalch opened a new issue #543: Tablet assignment thread gets stuck

mikewalch opened a new issue #543: Tablet assignment thread gets stuck
URL: https://github.com/apache/accumulo/issues/543
 
 
   Received this exception while running continuous ingest on Accumulo 1.9 with heavy tserver agitation.
   
   ```
   Assignment for !0;~< has been running for at least 1031221ms
   	java.lang.Exception: Assignment of !0;~<
   		at sun.misc.Unsafe.park(Native Method)
   		at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
   		at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
   		at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
   		at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
   		at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
   		at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
   		at org.apache.accumulo.tserver.tablet.Tablet.removeInUseLogs(Tablet.java:2465)
   		at org.apache.accumulo.tserver.TabletServer$12.removeInUse(TabletServer.java:3413)
   		at org.apache.accumulo.tserver.TabletServer.findOldestUnreferencedWals(TabletServer.java:3370)
   		at org.apache.accumulo.tserver.TabletServer.markUnusedWALs(TabletServer.java:3421)
   		at org.apache.accumulo.tserver.TabletServer.minorCompactionFinished(TabletServer.java:3245)
   		at org.apache.accumulo.tserver.tablet.DatafileManager.bringMinorCompactionOnline(DatafileManager.java:459)
   		at org.apache.accumulo.tserver.tablet.Tablet.minorCompact(Tablet.java:914)
   		at org.apache.accumulo.tserver.tablet.MinorCompactionTask.run(MinorCompactionTask.java:90)
   		at org.apache.accumulo.tserver.tablet.Tablet.minorCompactNow(Tablet.java:1047)
   		at org.apache.accumulo.tserver.TabletServer$AssignmentHandler.run(TabletServer.java:2388)
   		at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
   		at org.apache.accumulo.tserver.ActiveAssignmentRunnable.run(ActiveAssignmentRunnable.java:64)
   		at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
   		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
   		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   		at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
   		at java.lang.Thread.run(Thread.java:748)
   ```

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