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Andrew Purtell commented on HBASE-5047: --------------------------------------- Also need a configurable option to declare laggy children as stuck, a hard response latency threshold and perhaps also a soft latency threshold with a tolerance factor, e.g. no more than 3 overages in a minute. > [Coprocessors] Implement child failure strategies for external coprocessor > host > ------------------------------------------------------------------------------- > > Key: HBASE-5047 > URL: https://issues.apache.org/jira/browse/HBASE-5047 > Project: HBase > Issue Type: Sub-task > Components: coprocessors > Reporter: Andrew Purtell > > There should be three selectable strategies: > 1. Close and reopen the region, triggering force termination of the stuck > child on close, and fork/initialization of a new child on open, along with > reinit of all region related resources, other coprocessors, etc. > 2. Unload/reload the malfunctioning coprocessor. Will require some work in > the coprocessor framework to actually support unloading in a reasonable way. > The JVM may make this complicated for integrated CPs, so perhaps just for > those hosted in external processes. > 3. Unload/terminate the malfunctioning coprocessor and continue operation. > Consider changes in the CP framework for temporary blacklisting, will need > that to avoid loading the suspect CP after a split. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira