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From "Suresh Thalamati (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-989) unit/daemonService.unit fails intermittently: 'ran out of time'
Date Wed, 05 Jul 2006 23:02:31 GMT
    [ http://issues.apache.org/jira/browse/DERBY-989?page=comments#action_12419356 ] 

Suresh Thalamati commented on DERBY-989:
----------------------------------------

Hi Knut, 

Thanks for looking into this failure. I took a quick look at your changes,patch looks  good.
 
 Only minor thing I noticed is :

In work() method is getting assing to the current service record:
+		if ((work.getClientNumber() >= 0) &&
+			(subscription.elementAt(work.getClientNumber()) == null)) {
+			/ DERBY-989: client has unsubscribed, skip it
+			continue;
+		}
+				currentlyBeingServiced = work;
	}

I think the statement "currentlyBeingServiced = work"  can be set only when
clientNumber > 0 ; in other cases anyway it is not being used; As I understantd
this patch is fixing only subscribe/unsubscribe type requests. 


I am also bit confused about what should be correct contract of 
unsubscribe() method  should be.  I looked at the derby code 
little bit for cases where unsubcribe() call makes  performWork() in 
execution for that client throws weird errors.  One thing I noticed 
is BasicDaemon:stop() method is called either before the unsubscribe() 
method calls or  immediately after it. stop() method waits for work 
in progress to complete.

Not sure if this patch will prevent any new issues, that is not addressed
by calling the daemon stop() method. My choice would be to fix the test, 
unless some one finds a problem in the engine code with usage of 
unsubcribe() method. 

Thanks
-suresh


> unit/daemonService.unit fails intermittently: 'ran out of time'
> ---------------------------------------------------------------
>
>          Key: DERBY-989
>          URL: http://issues.apache.org/jira/browse/DERBY-989
>      Project: Derby
>         Type: Test

>   Components: Regression Test Failure
>     Versions: 10.2.0.0
>  Environment: OS: Solaris 10 3/05 s10_74L2a X86 - SunOS 5.10 Generic, JVM: Sun Microsystems
Inc. 1.5.0_04
> OS: Solaris 9 9/04 s9s_u7wos_09 SPARC - SunOS 5.9 Generic_118558-11, JVM: Sun Microsystems
Inc. 1.5.0_03
> OS: Red Hat Enterprise Linux AS release 3 (Taroon Update 4) - Linux 2.4.21-27.ELsmp #1
SMP Wed Dec 1 21:50:31 EST 2004 GNU/Linux, JVM: Sun Microsystems Inc. 1.5.0_03
>     Reporter: Ole Solberg
>     Assignee: Knut Anders Hatlen
>     Priority: Minor
>  Attachments: 989-411220-derbyall_derbyall_unit_unit_derby.log, derby-989-testfix.diff,
derby-989-testfix.stat, derby-989-timebomb.diff, derby-989-timebomb.stat, derby-989-v1.diff,
derby-989-v1.stat
>
> "Signature":
> ********* Diff file unit/unit/daemonService.diff
> *** Start: daemonService jdk1.5.0_04 unit:unit 2006-02-14 20:46:42 ***
> 2 del
> < -- Unit Test T_DaemonService finished
> 2 add
> > ran out of time
> > Shutting down due to unit test failure.
> > Exit due to time bomb
> Test Failed.
> *** End:   daemonService jdk1.5.0_04 unit:unit 2006-02-14 21:47:13 ***
> http://www.multinet.no/~solberg/public/Apache/Derby/Limited/testSummary-377800.html [SunOS-5.10
i86pc-i386]

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