https://bz.apache.org/bugzilla/show_bug.cgi?id=65000

--- Comment #5 from Philippe Mouawad <[email protected]> ---
(In reply to Madhuri Jain from comment #4)
> Hi,
> Thank you very much for your response.
> 
> It's an HTTP based web test plan but we have not set any timeout explicitly
> (must be defaults if any).

By default, we wait infinitely which can be a cause for hanging.
So please try setting in Advanced tab connect (500 is an acceptable value) and
read (30000)  timeouts and see if it hangs.

> For more details, the test plan is attached in
> the bug.
> 
> The JMeter distributed setup is running on jre-headless docker image so it
> lacks jdk utilities. I'm facing two issues while getting thread dump:
> 
> 1. The issue is occurring inconsistently and randomly.

You can probably install a jdk instead and you'll have it;
> 
> 2. While trying to run jmeter threaddump.sh, this only works on JMeter
> client (attached thread dump) but not on JMeter servers. Is there a way to
> run it and get thread dump on JMeter server?

Install a JDK on your docker image
Connect to it using bash and run jstack from inside the image

> 
> Thanks!
> 
> (In reply to Philippe Mouawad from comment #1)
> > Hello,
> > If it's an HTTP based load test, have you set connect and read timeout on
> > HTTP Requests ? 
> > 
> > If it's another type of test, check that you don't have hanging samplers.
> > 
> > If you identify the hanging node, then run a thread dump using jstack or
> > jmeter threaddump.sh and attach output here.
> > 
> > Thanks

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