We have a handful of Jira tickets filed against various off-heap tests that
are intermittently hanging in DiskStoreImpl.waitForBackgroundTasks during
Cache.close:
"Test worker" #25 prio=5 os_prio=0 tid=0x00007f1a7cb13800 nid=0x5e in
Object.wait() [0x00007f18ff6bd000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at
org.apache.geode.internal.cache.DiskStoreImpl.waitForBackgroundTasks(DiskStoreImpl.java:2631)
- locked <0x00000000fb920030> (a
java.util.concurrent.atomic.AtomicInteger)
at
org.apache.geode.internal.cache.DiskStoreImpl.close(DiskStoreImpl.java:2387)
at
org.apache.geode.internal.cache.DiskStoreImpl.close(DiskStoreImpl.java:2297)
at
org.apache.geode.internal.cache.GemFireCacheImpl.closeDiskStores(GemFireCacheImpl.java:2571)
at
org.apache.geode.internal.cache.GemFireCacheImpl.doClose(GemFireCacheImpl.java:2300)
- locked <0x00000000d00bfd38> (a java.lang.Class for
org.apache.geode.internal.cache.GemFireCacheImpl)
at
org.apache.geode.internal.cache.GemFireCacheImpl.close(GemFireCacheImpl.java:2119)
at
org.apache.geode.internal.cache.GemFireCacheImpl.close(GemFireCacheImpl.java:1987)
at
org.apache.geode.internal.cache.GemFireCacheImpl.close(GemFireCacheImpl.java:1977)
at
org.apache.geode.internal.offheap.OffHeapRegionBase.closeCache(OffHeapRegionBase.java:106)
at
org.apache.geode.internal.offheap.OffHeapRegionBase.testPersistentCompressorChange(OffHeapRegionBase.java:709)
Bruce did some analysis and found that the background tasks in
DiskStoreImpl is empty when the hang occurs.
1) GEODE-7524 CI failure: hang in
FreeListOffHeapRegionJUnitTest.testPersistentCompressorChange
<https://issues.apache.org/jira/browse/GEODE-7524>
2) GEODE-7876 OldFreeListOffHeapRegionJUnitTest
testPersistentChangeFromHeapToOffHeap
<https://issues.apache.org/jira/browse/GEODE-7876>
3) GEODE-8187
OldFreeListOffHeapRegionJUnitTest.testPersistentCompressorChange hangs in
DiskStoreImpl.waitForBackgroundTasks
<https://issues.apache.org/jira/browse/GEODE-8187>
Does anyone with deeper DiskStoreImpl knowledge want to take a look at this
hang?
