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From Josh Elser <josh.el...@gmail.com>
Subject Re: ArrayIndexOutOfBoundsException in PQS
Date Thu, 05 Jan 2017 17:44:06 GMT
Interesting! I haven't come across this one myself.

By Phoenix 4.7, am I to assume you mean 4.7.0? Phoenix version strings 
are 3 "digits", not 2.

My first guess would be that it might be a race condition around the 
closeStatement call (either from multiple callers) or the 
automatic-closing logic inside of PQS itself (by default, PQS will close 
statements that haven't been used for 10mins, IIRC).

Any more information on the context in which you see this would be very 
helpful.

Tulasi Paradarami wrote:
> We noticed that PQS started raising ArrayIndexOutOfBoundsException in
> our production cluster. This exception is raised sporadically and goes
> away when PQS is restarted. Does anyone know what might be causing this
> exception? Are there any configuration (PQS and/or Avatica) parameters
> that we can modify to prevent it from recurring?
>
> CDH 5.7.2
> HBase: 1.2.0
> Phoenix: 4.7
>
> Here is an error stack for "closeStatement" request:
>
> {"level":"TRACE","message":" server.AvaticaJsonHandler: response:
> Response:
> {"response":"error","exceptions":["java.lang.ArrayIndexOutOfBoundsException:
> -1
> at java.util.ArrayList.fastRemove(ArrayList.java:528)
> at java.util.ArrayList.remove(ArrayList.java:511)
> at org.apache.phoenix.jdbc.PhoenixResultSet.close(PhoenixResultSet.java:165)
> at
> org.apache.calcite.avatica.jdbc.JdbcMeta.closeStatement(JdbcMeta.java:559)
> at
> org.apache.calcite.avatica.remote.LocalService.apply(LocalService.java:256)
> at
> org.apache.calcite.avatica.remote.Service$CloseStatementRequest.accept(Service.java:1529)
> at
> org.apache.calcite.avatica.remote.Service$CloseStatementRequest.accept(Service.java:1511)
> at
> org.apache.calcite.avatica.remote.AbstractHandler.apply(AbstractHandler.java:102)
> at org.apache.calcite.avatica.remote.JsonHandler.apply(JsonHandler.java:43)
> at
> org.apache.calcite.avatica.server.AvaticaJsonHandler.handle(AvaticaJsonHandler.java:73)
> at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
> at org.eclipse.jetty.server.Server.handle(Server.java:497)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
> at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:245)
> at org.eclipse.jetty.io
> <http://org.eclipse.jetty.io>.AbstractConnection$2.run(AbstractConnection.java:540)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
> at java.lang.Thread.run(Thread.java:745)
> "],"errorMessage":"ArrayIndexOutOfBoundsException:
> -1","errorCode":-1,"sqlState":"00000","severity":"UNKNOWN","rpcMetadata":{"response":"rpcMetadata","serverAddress":"pqs_hostname:8765"}},
> Status:500"}
>

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