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https://issues.apache.org/jira/browse/CASSANDRA-10983?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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C. Scott Andreas updated CASSANDRA-10983:
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Component/s: Observability
> Metrics for tracking offending queries
> --------------------------------------
>
> Key: CASSANDRA-10983
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10983
> Project: Cassandra
> Issue Type: Improvement
> Components: Observability
> Reporter: Sharvanath Pathak
> Priority: Major
> Labels: github-import
> Fix For: 2.1.x
>
>
> I have seen big GC pauses leading to nodes being marked DOWN in our cluster.
> The most common issue is someone, would add a large range scan and it would
> be difficult to pin-point the specific query. I have added a mechanism to
> account the memory allocation for a specific query. In order to allow
> aggregates over a period I added a metric as well. Attached is the diff.
> I was wondering if something like this would be interesting for more general
> audience. There are some things which need to be fixed for proper release.
> For instance, Cleaning up existing metrics on server restart. However, just
> wanted to check before that if something like this would be useful for others.
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