hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Meeran <mohamed.mohid...@zohocorp.com>
Subject HConnection thread waiting on blocking queue indefinitely
Date Tue, 02 Jun 2015 11:29:41 GMT
Hi All, 



HBase client waits indefinitely for performing any operation. On taking, jstack we  saw all
the threads waiting on BoundedCompletionService.take() call. The hconnection pool's stack
is 



hconnection-0x58ca857d-shared--pool1-t96" daemon prio=10 tid=0x00007f29d4510800 nid=0x84d0
waiting on condition [0x00007f2568dc0000] 

   java.lang.Thread.State: WAITING (parking) 

    at sun.misc.Unsafe.park(Native Method) 

    - parking to wait for  &lt;0x000000060cbecf50&gt; (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)


    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186) 

    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)


    at java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:374) 

    at org.apache.hadoop.hbase.util.BoundedCompletionService.take(BoundedCompletionService.java:74)


    at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:174)


    at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:56)


    at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)


    at org.apache.hadoop.hbase.client.ClientSmallReversedScanner.next(ClientSmallReversedScanner.java:145)


    at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1200)

    at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1109)


    at org.apache.hadoop.hbase.client.AsyncProcess$AsyncRequestFutureImpl.findAllLocationsOrFail(AsyncProcess.java:916)


    at org.apache.hadoop.hbase.client.AsyncProcess$AsyncRequestFutureImpl.groupAndSendMultiAction(AsyncProcess.java:833)


    at org.apache.hadoop.hbase.client.AsyncProcess$AsyncRequestFutureImpl.resubmit(AsyncProcess.java:1156)


    at org.apache.hadoop.hbase.client.AsyncProcess$AsyncRequestFutureImpl.receiveMultiAction(AsyncProcess.java:1296)


    at org.apache.hadoop.hbase.client.AsyncProcess$AsyncRequestFutureImpl.access$1200(AsyncProcess.java:574)


    at org.apache.hadoop.hbase.client.AsyncProcess$AsyncRequestFutureImpl$SingleServerRequestRunnable.run(AsyncProcess.java:716)


    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) 

    at java.util.concurrent.FutureTask.run(FutureTask.java:262) 

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 

    at java.lang.Thread.run(Thread.java:745)



Our client configurations are as follows:

hbase.hconnection.threads.core - 1

hbase.hconnection.threads.max - 10




Regards,

Meeran.



















Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message