reckart opened a new pull request, #458:
URL: https://github.com/apache/uima-uimaj/pull/458
**What's in the PR**
- CPMExecutorService: add setContextClassLoader() to capture and apply
control thread's TCCL to worker tasks via per-task wrapping (not hooks)
- CPMExecutorService: wrap Callable and Runnable tasks with set/restore of
TCCL in try/finally to guarantee restore and prevent leaking stale loader to
pooled workers
- CPMExecutorService: override terminated() to drop TCCL field reference on
executor shutdown
- BaseCPMImpl: capture control thread's context class loader in all three
process() entry points and pass to executor before submitting tasks
- Add CpmThreadContextClassLoaderTest with spec test (clean run) and
white-box reuse test (pooled workers with stale TCCL)
**How to test manually**
* See issue description
**Automatic testing**
* [x] PR adds/updates unit tests
**Documentation**
* [ ] PR adds/updates documentation
**Organizational**
- [ ] PR adds/updates dependencies.
<sub><sup>Only dependencies under [approved
licenses](http://www.apache.org/legal/resolved.html#category-a) are allowed.
LICENSE and NOTICE files in the respective modules where dependencies have been
added as well as in the project root have been updated.</sup></sub>
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