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Posted to dev@omid.apache.org by "Francisco Perez-Sorrosal (JIRA)" <ji...@apache.org> on 2016/08/18 00:42:20 UTC
[jira] [Created] (OMID-54) Leak in Compactor Coprocessor that
creates an increasing number of idle threads
Francisco Perez-Sorrosal created OMID-54:
--------------------------------------------
Summary: Leak in Compactor Coprocessor that creates an increasing number of idle threads
Key: OMID-54
URL: https://issues.apache.org/jira/browse/OMID-54
Project: Apache Omid
Issue Type: Bug
Affects Versions: 0.8.2.0
Reporter: Francisco Perez-Sorrosal
Assignee: Francisco Perez-Sorrosal
Fix For: 0.8.3.0
The use of an structure to reuse CommitTable.Client objects has introduced a side effect that creates an increasing number of those objects, which in turn contain idle threads that are connected to HBase.
This is what is observed with jstack:
Thread 3047696 (omid-completor-0):
State: WAITING
Blocked count: 0
Waited count: 1
Waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@76e5b0a
Stack:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:403)
com.yahoo.omid.committable.hbase.HBaseCommitTable$HBaseClient.run(HBaseCommitTable.java:221)
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
Thread 3047652 (omid-completor-0):
State: WAITING
Blocked count: 0
Waited count: 1
Waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@6e27d8fb
Stack:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:403)
com.yahoo.omid.committable.hbase.HBaseCommitTable$HBaseClient.run(HBaseCommitTable.java:221)
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
Thread 3041861 (omid-completor-0):
State: WAITING
Blocked count: 0
Waited count: 1
Waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@5a279424
Stack:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:403)
com.yahoo.omid.committable.hbase.HBaseCommitTable$HBaseClient.run(HBaseCommitTable.java:221)
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
Thread 3041286 (omid-completor-0):
State: WAITING
Blocked count: 0
Waited count: 2
Waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@536fd78
Stack:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:403)
com.yahoo.omid.committable.hbase.HBaseCommitTable$HBaseClient.run(HBaseCommitTable.java:221)
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
...
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