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From "Sunitha Kambhampati (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-1114) derbynet/testSecMec.java fails intermittently and test exits mysteriously when server is shutdown as part of the testrun.
Date Wed, 15 Mar 2006 01:26:56 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1114?page=comments#action_12370445 ] 

Sunitha Kambhampati commented on DERBY-1114:
--------------------------------------------

Thanks Bryan for trying out the patch.  If the problem lies in the networkserver.shutdown
and the test change to remove the switching of streams doesnt help,  then I guess  there isnt
much point  checking in this test change.  So lets just ignore the (Derby1114.diff.txt) patch.


I thought it was interesting that the shutdown message for server doesnt get to the derby.log
for the run where the test exits.   In the network server shutdown method (NetworkServerControlImpl.shutdown),
the message would be written to the cloudscapeLogWriter. ( goes to consoleWriter method).
If you follow that path, it leads to the Monitor.getStream() and there is a comment there
that if streams cannot be setup for some reason, it would default to System.err.   From a
quick look, I think if the stream is setup as System.err it doesnot close the stream. 

I can only think of  putting old fashioned println statements in networkserver.shutdown to
see what maybe happening.   

Thanks,
Sunitha.

> derbynet/testSecMec.java fails intermittently and test exits mysteriously when server
is shutdown as part of the testrun.
> -------------------------------------------------------------------------------------------------------------------------
>
>          Key: DERBY-1114
>          URL: http://issues.apache.org/jira/browse/DERBY-1114
>      Project: Derby
>         Type: Bug
>   Components: Network Server, Test
>     Versions: 10.2.0.0
>  Environment: Java Version:    1.4.2_06
> Java Vendor:     Sun Microsystems Inc.
> Java home:       /usr/local/lib/j2sdk1.4.2_06/jre
> OS name:         Linux
> OS architecture: i386
> OS version:      2.4.21-27.0.2.ELsmp
>     Reporter: Sunitha Kambhampati
>     Priority: Minor
>  Attachments: Derby1114.diff.txt
>
> The test derbynet/testSecMec.java fails intermittently in a strange way that the test
actually exits before finishing the full test. 
> This issue was noticed by Bryan when he ran derbyall with the derby-1080 fix. Some discussion
and analysis that has been done is in Derby-1080. Please read comments in DERBY-1080. Some
main links in
> http://issues.apache.org/jira/browse/DERBY-1080#action_12370260
> http://issues.apache.org/jira/browse/DERBY-1080#action_12370374
> In short: the test does some switching of System.out and System.err streams before calling
networkserver.shutdown. This code was added to this test as part of fix for derby-273.   for
some reason, the networkserver.shutdown call makes the test to exit.  One theory is that the
network server.shutdown is causing the standard out streams to close and thus the test exits.
> -- Need to investigate what is the cause for this intermittent failure and how/why  networkserver.shutdown
is closing the stream or making the test to exit prematurely.

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