[JIRA] [throttle-concurrents] (JENKINS-21044) Throttle Concurrent Builds blocking Jenkins queue

Fri, 07 Mar 2014 14:34:38 -0800

Code changed in jenkins
User: Oleg Nenashev
Path:
src/main/java/hudson/plugins/throttleconcurrents/ThrottleJobProperty.java
http://jenkins-ci.org/commit/throttle-concurrent-builds-plugin/9b7562d4b08e0a4202130d43307082553142df82
Log:
[FIXED JENKINS-21044] - Throttling blocks the Jenkins queue

Seems the issue was in improper usage of WeakHashMap (see analysis from @centic).
I've managed to reproduce the behavior in the following case:

  • There is a big number of jobs/configurations with throttling
  • The builds queue is not empty
    // Seems that ThrottleQueueTaskDispatcher tries to access the data before the complete loading of the plugin's configuration.

This fix provides an explicit locking of any load operations + manual cleanup of erroneous cache data, which goes to persistence in 1.8.1
Resolves https://issues.jenkins-ci.org/browse/JENKINS-21044

Signed-off-by: Oleg Nenashev <o.v.nenas...@gmail.com>
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