When using Amazon EC2 plugin, builds on newly created EC2 instances sometimes hang.
We have two permanent slaves for a certain label (e.g. 'unittest'),
which is generated from an AMI.
The same AMI is specified within Amazon EC2 plugin settings.
We have a job which can be executed concurrently
When we invoke three builds at one time, two permanent slaves are exhausted
and the new one is created.
The problem is that the build on the new slave hangs at the end of it
where xUnit plugin is aggregating the test result.
After aborting the build, the following error is shown.
I tried to capture the thread dump, but both master and the target slave had EMPTY thread dump while another slave had its own.
I'd appreciate if someone give me advice.
Jenkins ver. 1.491
xUnit plugin 1.51
Amazon EC2 plugin 1.17
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