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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16089) Add on FastPath for CoDel
Date Fri, 24 Jun 2016 21:59:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15348756#comment-15348756
] 

stack commented on HBASE-16089:
-------------------------------

Let me post a picture... but the short circuit doesn't seem to be cutting in:

{code}
2457 "RpcServer.reader=3,bindAddress=ve0528.halxg.cloudera.com,port=16020" #36 daemon prio=5
os_prio=0 tid=0x00007f00a592f800 nid=0x206e0 waiting on condition [0x00007ef88730a000]
2458    java.lang.Thread.State: WAITING (parking)
2459   at sun.misc.Unsafe.park(Native Method)
2460   - parking to wait for  <0x00007ef9a24d93a8> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
2461   at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
2462   at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
2463   at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
2464   at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
2465   at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
2466   at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
2467   at java.util.concurrent.LinkedBlockingDeque.size(LinkedBlockingDeque.java:807)
2468   at org.apache.hadoop.hbase.ipc.AdaptiveLifoCoDelCallQueue.size(AdaptiveLifoCoDelCallQueue.java:199)
2469   at org.apache.hadoop.hbase.ipc.BalancedQueueRpcExecutor.dispatch(BalancedQueueRpcExecutor.java:88)
2470   at org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.dispatch(SimpleRpcScheduler.java:296)
2471   at org.apache.hadoop.hbase.ipc.RpcServer$Connection.processRequest(RpcServer.java:1942)
2472   at org.apache.hadoop.hbase.ipc.RpcServer$Connection.processOneRpc(RpcServer.java:1833)
2473   at org.apache.hadoop.hbase.ipc.RpcServer$Connection.process(RpcServer.java:1679)
2474   at org.apache.hadoop.hbase.ipc.RpcServer$Connection.readAndProcess(RpcServer.java:1659)
2475   at org.apache.hadoop.hbase.ipc.RpcServer$Listener.doRead(RpcServer.java:907)
2476   at org.apache.hadoop.hbase.ipc.RpcServer$Listener$Reader.doRunLoop(RpcServer.java:689)
2477   - locked <0x00007ef9a21de7d0> (a org.apache.hadoop.hbase.ipc.RpcServer$Listener$Reader)
2478   at org.apache.hadoop.hbase.ipc.RpcServer$Listener$Reader.run(RpcServer.java:665)
2479   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
2480   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
2481   at java.lang.Thread.run(Thread.java:745)
{code}

> Add on FastPath for CoDel
> -------------------------
>
>                 Key: HBASE-16089
>                 URL: https://issues.apache.org/jira/browse/HBASE-16089
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>         Attachments: HBASE-16089.patch, HBASE-16089.v1.patch, HBASE-16089.v2.patch
>
>
> If this is all that awesome, so we should have it on CoDel too.



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