All threads getting locked in VHost lock

Wowza Streaming Engine
1

Hi,

My systems is going down because all thread are waiting on the lock of the VHost object.

I am using jstack to dump the threads. I can not find any thread holding the holds.

Do you have any suggestion?

Aloha,

Rafael Sobral

2

It may be of use to grab a thread dump and zip up your conf/ and logs/ directories and send them to support@wowza.com for further review and analysis.

3

I am sending. But here is a list of Threads waiting it.

ServerHandler…

at com.wowza.wms.vhost.VHost.getClient(VHost.java:1443)

at com.wowza.wms.vhost.VHost.getClient(VHost.java:1502)

at com.wowza.wms.request.RTMPRequestAdapter.service(RTMPRequestAdapter.java:175)

at com.wowza.wms.server.ServerHandler.a(ServerHandler.java:653)

at com.wowza.wms.server.ServerHandler.a(ServerHandler.java:401)

at com.wowza.wms.server.ServerHandler.sessionIdle(ServerHandler.java:537)

at com.wowza.wms.server.ServerHandlerThreadedSession.run(ServerHandlerThreadedSession.java:111)

StatsManager

at com.wowza.wms.vhost.VHost.isApplicationLoaded(VHost.java:1969)

at com.wowza.wms.stats.StatsManager.run(Unknown Source)

MyThread

at com.wowza.wms.vhost.VHost.getApplication(VHost.java:1998)

serverWatchdog

at com.wowza.wms.vhost.VHost.updateIOPerformance(VHost.java:2379)

at com.wowza.wms.server.Server.updateIOPerformance(Server.java:2861)

at com.wowza.wms.server.Server.doWatchdog(Server.java:2806)

at com.wowza.wms.server.ServerWatchdog.run(ServerWatchdog.java:40)

Most of BLOCKED threads are on logging.

BLOCKED

at org.apache.log4j.Category.forcedLog(Category.java:391)

at org.apache.log4j.Category.log(Category.java:856)

at org.apache.commons.logging.impl.Log4JLogger.info(Log4JLogger.java:199)

Is the log Thread-safe?

4

Please refer to ticket

#91708