[jira] [Closed] (HBASE-2058) Coprocessors: CPU and memory limit policy enforcment via runtime weaving

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-2058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Kyle Purtell closed HBASE-2058.
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> Coprocessors: CPU and memory limit policy enforcment via runtime weaving
> ------------------------------------------------------------------------
>
>                 Key: HBASE-2058
>                 URL: https://issues.apache.org/jira/browse/HBASE-2058
>             Project: HBase
>          Issue Type: Improvement
>          Components: Coprocessors
>            Reporter: Andrew Kyle Purtell
>            Priority: Major
>
> Use the ASM bytecode analysis and rewriting engine to impose some constraints on CPU and memory use. This is middle ground between arbitrary function and a locked down language.
> We will be given arbitrary bytecode input. It is acceptable to reject a class and abort coprocessor loading if it defies analysis at load time such that we have insufficient confidence about the result.
> Wrap allocations to simply disallow large allocations. Hook or add finalizers to keep a running tally of aggregate heap charge. Disallow allocation beyond policy limit.
> Weave CPU usage tracking into loop headers. Throw an uncatchable exception if time limits prescribed by policy are exceeded.



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