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From "Chris Lohfink (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-15043) Add heap dump inspections to sidecar
Date Wed, 06 Mar 2019 22:21:00 GMT
Chris Lohfink created CASSANDRA-15043:
-----------------------------------------

             Summary: Add heap dump inspections to sidecar
                 Key: CASSANDRA-15043
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15043
             Project: Cassandra
          Issue Type: New Feature
          Components: Sidecar
            Reporter: Chris Lohfink
            Assignee: Chris Lohfink


Add to ui a tool to view heap dumps cassandra produces when OOM to identify the issue that
caused it. Three views

1. C* inspections - useful inspections like a list of the largest partitions, most active
partitions, largest (and most by table and partition) mutations.
2. Threads - their stack traces, heap size, and values of things in local processing scope
(that can be clicked through and explored)
3. Metrics - view state of all the metrics at time of heap dump

Additional requirement: since this runs on cassandra sidecar it should use very low memory
(ie sub 100mb) and not consume massive cpu



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