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https://issues.apache.org/jira/browse/HBASE-28242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lars Francke updated HBASE-28242:
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Summary: Move ProfileServlet to support async-profiler 2.x only (was:
ProfileServlet does not allow selecting all events (e.g. itimer))
> Move ProfileServlet to support async-profiler 2.x only
> ------------------------------------------------------
>
> Key: HBASE-28242
> URL: https://issues.apache.org/jira/browse/HBASE-28242
> Project: HBase
> Issue Type: Improvement
> Reporter: Lars Francke
> Priority: Minor
>
> In ProfileServlet we currently force the use of certain events because we use
> an enum with allowed values.
> async-profiler can support selecting multiple events (comma-separated) and it
> supports parameters as well.
> Example from the README: {{event=cpu,alloc=2m,lock=10ms}}
> We also miss an item {{itimer}} which is suggested if kernel level access to
> perf events is not available (e.g. in a container)
> I understand that this probably has to do with security because we don't want
> to allow users passing in arbitrary things into the command line.
> At the very least I'd like to add itimer support but if someone has an idea
> how we can (easily and safely) support more events I'm all ears.
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