Does this output from jstack indicate a problem? "ReadRepairStage:12170" daemon prio=10 tid=0x00007f9dcc018800 nid=0x7361 waiting on condition [0x00007f9db540c000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x0000000613e049d8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082) at java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744)
"ReadRepairStage:12169" daemon prio=10 tid=0x00007f9dd4009000 nid=0x7340 waiting on condition [0x00007f9db53cb000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x0000000613e049d8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082) at java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) "ReadRepairStage:12168" daemon prio=10 tid=0x00007f9dd001d000 nid=0x733f waiting on condition [0x00007f9db51a6000] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x0000000613e049d8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082) at java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) On Tue, Jul 1, 2014 at 2:09 PM, Brian Tarbox <tar...@cabotresearch.com> wrote: > We're running 1.2.13. > > Any chance that doing a rolling-restart would help? > > Would running without the "-pr" improve the odds? > > Thanks. > > > On Tue, Jul 1, 2014 at 1:40 PM, Robert Coli <rc...@eventbrite.com> wrote: > >> On Tue, Jul 1, 2014 at 9:24 AM, Brian Tarbox <tar...@cabotresearch.com> >> wrote: >> >>> I have a six node cluster in AWS (repl:3) and recently noticed that >>> repair was hanging. I've run with the "-pr" switch. >>> >> >> It'll do that. >> >> What version of Cassandra? >> >> =Rob >> >> > >