Benoit Sigoure created HBASE-10119:
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Summary: Allow HBase coprocessors to clean up when they fail
Key: HBASE-10119
URL: https://issues.apache.org/jira/browse/HBASE-10119
Project: HBase
Issue Type: New Feature
Affects Versions: 0.96.0
Reporter: Benoit Sigoure
In the thread [Giving a chance to buggy coprocessors to clean
up|http://osdir.com/ml/general/2013-12/msg17334.html] I brought up the issue
that coprocessors currently don't have a chance to release their own resources
(be they internal resources within the JVM, or external resources elsewhere)
when they get forcefully removed due to an uncaught exception escaping.
It would be nice to fix that, either by adding an API called by the
{{CoprocessorHost}} when killing a faulty coprocessor, or by guaranteeing that
the coprocessor's {{stop()}} method will be invoked then.
This feature request is actually pretty important due to bug HBASE-9046, which
means that it's not possible to properly clean up a coprocessor without
restarting the RegionServer (!!).
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