Minor Seen 3 times in a row on ovh03
The Thread Nuxeo-ConsumerPool-00 is waiting for task execution but there is no thread Nuxeo-Consumer in the stack trace.
The last trace is:
11:24:06 11:24:06,831 [Nuxeo-ConsumerPool-00] WARN [AbstractCallablePool] Start Nuxeo-Consumer Pool on 2 thread(s).
"Nuxeo-ConsumerPool-00" #90 prio=5 os_prio=0 tid=0x00007fcdd1eeb800 nid=0x1774f waiting on condition [0x00007fcd044da000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000fae739a0> (a java.util.concurrent.CompletableFuture$Signaller) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1693) at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323) at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1729) at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895) at org.nuxeo.lib.stream.pattern.consumer.internals.AbstractCallablePool.runPool(AbstractCallablePool.java:118) at org.nuxeo.lib.stream.pattern.consumer.internals.AbstractCallablePool.lambda$start$0(AbstractCallablePool.java:74) at org.nuxeo.lib.stream.pattern.consumer.internals.AbstractCallablePool$$Lambda$164/1047000562.get(Unknown Source) at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) "main" #1 prio=5 os_prio=0 tid=0x00007fcdd000a000 nid=0x176de waiting on condition [0x00007fcdd7932000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000faf13ba0> (a java.util.concurrent.CompletableFuture$Signaller) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1693) at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323) at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1729) at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895) at org.nuxeo.importer.stream.tests.importer.TestDocumentImport.fourStepsImportFileBlob(TestDocumentImport.java:191)
Possibly remove the threadpool.shutdown:
https://github.com/nuxeo/nuxeo-platform-importer/blob/master/nuxeo-importer-stream/src/main/java/org/nuxeo/lib/stream/pattern/consumer/internals/AbstractCallablePool.java#L112
In case the asynSupply is done after the shutdown in some rare race condition due to high slave load.
Another stuf is to update the JVM (Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)
