Siegfried Goeschl created EXEC-99:
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Summary: Provide a non-blocking PumpStreamHandler
Key: EXEC-99
URL: https://issues.apache.org/jira/browse/EXEC-99
Project: Commons Exec
Issue Type: Improvement
Affects Versions: 1.3
Reporter: Siegfried Goeschl
Assignee: Siegfried Goeschl
Fix For: 1.4
Sometimes the current PumpStreamHandler when a process is killed but its child
process streams are processed by PumpStreamHandler
* Closing the processed stream does seem not work
* Using Thread.interrupt() does not work
* Thread.stop() is deprecated and has no effect on JDK 8
* Hence the the stream pumper thread is stuck and can't terminate
* So we hand in PumpStreamHandler().stop
There was a bug fix to avoid hanging forever but this leaves the pumper thread
behind which could break a production system.
As a work-around I propose a "NonBlockingPumpStreamHandler"
* use only on worker thread to process a streams
* using Thread.sleep() between processing of the streams
* can be stopped safely since there are no blocking operations
* it will be much slower processing the streams which could block the child
process
It might be a good idea to hide those implementation behind a factory
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