# error log confused

**URL:** https://community.wowza.com/t/error-log-confused/45289
**Category:** Wowza Streaming Engine
**Created:** [July 20, 2015, 8:21pm UTC](https://community.wowza.com/t/error-log-confused/45289 "2015-07-20T20:21:14Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![zheng\_leo](https://avatars.discourse-cdn.com/v4/letter/z/c67d28/32.png) [@zheng\_leo](https://community.wowza.com/u/zheng_leo)
#### Post date: [July 20, 2015, 8:21pm UTC](https://community.wowza.com/t/error-log-confused/45289/1 "2015-07-20T20:21:14Z")

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Hi,

In my error log file, there are many error occured such as follow:

[HTML]IdleWorkerUtil: run.work : java.lang.NullPointerException|at com.wowza.wms.stream.livepacketizer.LiveStreamPacketi

zerBase.shutdown(LiveStreamPacketizerBase.java:272)|at com.wowza.wms.stream.MediaStreamMap.removeLiveStreamPacketizer(MediaStreamMap.java:1269)|a

t com.wowza.wms.stream.livepacketizer.LiveStreamPacketizerBase.checkTimeout(LiveStreamPacketizerBase.java:326)|at com.wowza.wms.stream.livepacket

izer.LiveStreamPacketizerBase.onIdle(LiveStreamPacketizerBase.java:262)|at com.wowza.wms.util.IdleWorkerUtil.run(IdleWorkerUtil.java:111)[/HTML]

I do not understand what’s it meaning for, can someone explain why and when it would happened?

thanks!!!

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### Author: ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)
#### Post date: [July 21, 2015, 6:11am UTC](https://community.wowza.com/t/error-log-confused/45289/2 "2015-07-21T06:11:24Z")

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Hello there.

It sounds like you forgot to configure a VHost-level thread pool for the load test tool?

Ensure that you have followed step 4 in the LoadTesingTool.pdf, as that’s the error usually seen when that

configuration step is not included:

Step 4. The Load Testing tool requires the _defaultVHost_ virtual host (VHost) to have its

own thread pool. By default, Wowza Streaming Engine is configured to use a server-level thread pool. To configure a VHost-level thread pool, edit [install-dir]/conf/VHost.xml and make the following changes:

- HandlerThreadPool/PoolSize: 60 x [total-core-count]

- TransportThreadPool/PoolSize: 40 x [total-core-count]

Regards,

Salvadore

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<div class="post-metadata">

### Author: ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)
#### Post date: [July 24, 2015, 9:13am UTC](https://community.wowza.com/t/error-log-confused/45289/3 "2015-07-24T09:13:13Z")

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I think this may have been addressed in the latest Wowza release. Please update to Wowza 4.2.0.

Also, make sure your Java startup settings are default.

Regards,

Salvadore

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<div class="post-metadata">

### Author: ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)
#### Post date: [July 25, 2015, 7:04am UTC](https://community.wowza.com/t/error-log-confused/45289/4 "2015-07-25T07:04:31Z")

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If this does not solve the problem, please open a ticket with support.

To do so, send a zipped copy of your /conf and /logs folders to support@wowza.com Also include a link to this thread for reference.

Regards,

Salvadore

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<div class="post-metadata">

### Author: ![zheng\_leo](https://avatars.discourse-cdn.com/v4/letter/z/c67d28/32.png) [@zheng\_leo](https://community.wowza.com/u/zheng_leo)
#### Post date: [July 23, 2015, 9:45pm UTC](https://community.wowza.com/t/error-log-confused/45289/5 "2015-07-23T21:45:47Z")

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thanks！

but i’m not using load test tool. in my workflow, ingest the udp stream, transcode it with quicksync and then pushPublish to adobe media server.