Re: JDBC section in admin gui broken

From: Anissa Lam <Anissa.Lam_at_Sun.COM>
Date: Mon, 17 Aug 2009 11:32:16 -0700

Hi Wouter,

Thanks for taking the time to verify and report back.

Anissa

Wouter van Reeven wrote:

Hi Anissa,


Today I downloaded build 59 and verified that this issue has been
resolved. I have closed the issue in IssueTracker. Thanks so much for
the quick fix!


Thanks, Wouter

On Mon, Aug 03, 2009 at 11:43:10AM -0700, Anissa Lam wrote:

Hi Wouter,

Wouter van Reeven wrote:

Hi,

I just saw Lloyds comments to the issue:

This was due to two conflicting variables, one of which would not get set until
the MBean was registered— a race condition.

Nice catch Lloyd! Thanks for fixing this so quickly.

+1 :)

So, when may we expect the next build to be released?

Weekly promoted build is scheduled on Wed, so, promoted build 58 which should
have the fix will be available on Wed, 8/5.
If you really want to try it out, you can take the nightly build from http://
download.java.net/glassfish/v3/nightly/
8/4 nightly build will have the fix.

thanks
Anissa.

Greets, Wouter

On Mon, Aug 03, 2009 at 10:55:21AM -0700, Sherry Shen wrote:

>From Anissa:
"For me, seems that web distribution has higher chance of hitting the bug."

I observed another intermittent amx failure.
In RE v3 build around July 30, NPE in amx test on web.zip
was shown twice. In the third run by Terena, the problem was gone.
I can't reproduce the quicklook failure on Linux using JDK 6
(1.6.0_14-b08). Lloyd can't reproduce the failure on Mac.
FYI

Sherry
Wouter van Reeven wrote, On 8/3/2009 10:13 AM:

Hi Lloyd,

Thanks so much for spending time on this issue. I realize I didn't put this in
the issue, but I can easily reproduce it on Linux using JDK 6 (1.6.0_14-b08).
Perhaps that will give you a clue for how to reproduce this?

Thanks, Wouter

On Mon, Aug 03, 2009 at 09:55:16AM -0700, Lloyd Chambers wrote:

No surprise nothing works— the MBeanServer is apparently null. I see a slew of these failures.

I'm changing the title of the bug accordingly. I have never seen this failure before. I can scan the code and hope to see a
problem, but not being able to reproduce it is a problem.

[#|2009-08-02T09:52:23.048-0700|INFO|glassfish|null|_ThreadID=25;_ThreadName=Thread-2;|ProxyFactory.getInstance:
failure creating ProxyFactory: , java.lang.NullPointerException: "null"
org.glassfish.admin.amx.util.jmx.JMXUtil.getMBeanServerID(JMXUtil.java:139)
org.glassfish.admin.amx.core.proxy.ProxyFactory.getInstance(ProxyFactory.java:362)
org.glassfish.admin.amx.core.proxy.ProxyFactory.getInstance(ProxyFactory.java:323)
org.glassfish.admin.amx.impl.util.ObjectNameBuilder.buildChildObjectName(ObjectNameBuilder.java:183)
org.glassfish.admin.amx.impl.config.AMXConfigLoader.buildObjectName(AMXConfigLoader.java:724)
org.glassfish.admin.amx.impl.config.AMXConfigLoader._registerConfigBeanAsMBean(AMXConfigLoader.java:603)
org.glassfish.admin.amx.impl.config.AMXConfigLoader.registerConfigBeanAsMBean(AMXConfigLoader.java:573)
org.glassfish.admin.amx.impl.config.AMXConfigLoader.registerConfigBeanAsMBean(AMXConfigLoader.java:570)
org.glassfish.admin.amx.impl.config.AMXConfigLoader.registerConfigBeanAsMBean(AMXConfigLoader.java:570)
org.glassfish.admin.amx.impl.config.AMXConfigLoader.registerConfigBeanAsMBean(AMXConfigLoader.java:570)
org.glassfish.admin.amx.impl.config.AMXConfigLoader.registerConfigBeanAsMBean(AMXConfigLoader.java:570)
org.glassfish.admin.amx.impl.config.AMXConfigLoader.access$100(AMXConfigLoader.java:77)
org.glassfish.admin.amx.impl.config.AMXConfigLoader$AMXConfigLoaderThread.registerOne(AMXConfigLoader.java:481)
org.glassfish.admin.amx.impl.config.AMXConfigLoader$AMXConfigLoaderThread.doRun(AMXConfigLoader.java:537)
org.glassfish.admin.amx.impl.config.AMXConfigLoader$AMXConfigLoaderThread.run(AMXConfigLoader.java:501)
|#]

On Aug 2, 2009, at 9:43 AM, Anissa Lam wrote:

Hi Wouter,

I think i know what maybe going on. Looking at the issue, it really
shouldn't be platform or browser or distribution specific. We are hitting
issue# https://glassfish.dev.java.net/issues/show_bug.cgi?id=8708
The fact that the applications bean not found should never happen.

java.lang.RuntimeException: javax.management.InstanceNotFoundException:
amx:pp=/domain,type=applications

In fact, this is affecting more than just the resource node. If you click
the Applications tree node, the right frame will show exception also.
This is an intermittent issue, although once you hit it, it happens
majority of time.
Since Lloyd marked that bug fixed, I have seen the problem again, and he
said he put in more information in case that happens again.
For me, seems that web distribution has higher chance of hitting the bug.
When i tried 8/1 nightly web, i got the error 2 out of 3 times. For you
its the full distribution. I know Yifeng has been testing resources on
b57, but she hasn't filed any issue, so sounds like it works for her.

Once you hit the error, it will not recover by itself, you have to restart
the server and hopefully won't hit it.
Also, I always start my own build using glassfish/bin/startserv --debug
, not sure if that decrease the chance for hitting the bug. You can give
it a try.

I am going to update issue #8980 that you submitted and attach my
server.log to it so Lloyd can take a look. Please attach your server.log
as another data point as well.

thanks
Anissa

Wouter van Reeven wrote:

Hi Anissa,

Thanks for trying this out as well. I think you should know I *never* use the
web distribution. I *always* use the full distribution. Maybe this is a problem
on Linux only? I downloaded glassfish-v3-preview-b57-unix.sh and that is the
version I had the problem with.

Thanks, Wouter

On Sun, Aug 02, 2009 at 08:42:30AM -0700, Anissa Lam wrote:

Hi Wouter,

Thanks for trying out b57.
I almost want to say i cannot reproduce the problem, but then i decided
to download web distribution to test it out also. Glad i did :)
This issue seems to occur only in web distribution, but not glassfish
distribution. I don't understand why since the code should be the same
in both for jdbc. I need to look into this further.
For the time being, work around is to install glassfish distribution.
The zip file can be found as:
http://download.java.net/glassfish/v3/promoted/glassfish-v3-preview-b57.zip

thanks
Anissa.

Wouter van Reeven wrote:

Hi all,

Last night I noticed the JDBC section in the admin gui of build 57 is
broken.
Everytime I click JDBC Resources, Connection Pools or open a Connection
pool I
get this exception in the logs:

java.lang.RuntimeException: javax.management.InstanceNotFoundException:
amx:pp=/domain,type=applications

The admin console won't even display any JDBC Resource despite them being
there.
Everything works fine when I use the CLI. I have created issue 8980 for
this.

Thanks, Wouter

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Lloyd Chambers
lloyd.chambers@sun.com
GlassFish Team

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