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https://issues.apache.org/jira/browse/DRILL-1929?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sudheesh Katkam resolved DRILL-1929.
------------------------------------
Resolution: Fixed
[DRILL-2755|https://issues.apache.org/jira/browse/DRILL-2755] introduces
interrupting fragment executor thread. This wait should no longer happen,
instead the interrupted executor will cleanup after itself. Please reopen if
you see the issue again.
> After canceling query in sqlline subsequent query in same session hangs
> -----------------------------------------------------------------------
>
> Key: DRILL-1929
> URL: https://issues.apache.org/jira/browse/DRILL-1929
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - RPC
> Affects Versions: 0.7.0
> Reporter: Aman Sinha
> Assignee: Jacques Nadeau
> Fix For: 1.2.0
>
>
> This might be related to existing query cancel issues but I did not find an
> exact match. Run the following query (against Tpc-ds schema) in sqlline and
> cntr-c to cancel it after couple of seconds:
> {code}
> select ss_sold_date_sk, ss_item_sk, ss_cdemo_sk, ss_hdemo_sk, ss_store_sk,
> ss_list_price from store_sales;
> {code}
> The query gets cancelled successfully. However, when I submit the same
> query again in the same session the query hangs. Here's a relevant portion
> of the jstack trace:
> {code}
> "2b55158d-6837-71ad-d523-bee5055ccc78:frag:0:0" daemon prio=5
> tid=0x00007f8d2c4d0000 nid=0x572b waiting on condition [0x0000000122997000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x0000000703481ba8> (a
> org.apache.drill.exec.rpc.ResettableBarrier$InternalSynchronizer)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:994)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1303)
> at
> org.apache.drill.exec.rpc.ResettableBarrier.await(ResettableBarrier.java:70)
> at
> org.apache.drill.exec.rpc.RemoteConnection$WriteManager.waitForWritable(RemoteConnection.java:80)
> at
> org.apache.drill.exec.rpc.RemoteConnection.blockOnNotWritable(RemoteConnection.java:53)
> at org.apache.drill.exec.rpc.RpcBus.send(RpcBus.java:91)
> at
> org.apache.drill.exec.rpc.user.UserServer$UserClientConnection.sendResult(UserServer.java:123)
> at
> org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:157)
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:57)
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:114)
> at
> org.apache.drill.exec.work.WorkManager$RunnableWrapper.run(WorkManager.java:254)
> {code}
> So, it looks like the WriteManager is blocked on a non-writable Rpc channel,
> which indicates the query cancellation before did not release all resources.
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