cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-14436) Add sampler for query time and expose with nodetool
Date Sat, 04 Aug 2018 02:44:01 GMT


ASF GitHub Bot commented on CASSANDRA-14436:

Github user dineshjoshi commented on a diff in the pull request:
    --- Diff: src/java/org/apache/cassandra/metrics/ ---
    @@ -0,0 +1,67 @@
    +package org.apache.cassandra.metrics;
    +import java.util.List;
    +import java.util.concurrent.LinkedBlockingQueue;
    +import java.util.concurrent.ThreadPoolExecutor;
    +import java.util.concurrent.TimeUnit;
    +import org.apache.cassandra.concurrent.JMXEnabledThreadPoolExecutor;
    +import org.apache.cassandra.concurrent.NamedThreadFactory;
    +public abstract class Sampler<T>
    --- End diff --
    It would be nice to have a jmh benchmark for the new `Sampler`s

> Add sampler for query time and expose with nodetool
> ---------------------------------------------------
>                 Key: CASSANDRA-14436
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Chris Lohfink
>            Assignee: Chris Lohfink
>            Priority: Major
> Create a new {{nodetool profileload}} that functions just like toppartitions but with
more data, returning the slowest local reads and writes on the host during a given duration
and highest frequency touched partitions (same as {{nodetool toppartitions}}). Refactor included
to extend use of the sampler for uses outside of top frequency (max instead of total sample
> Future work to this is to include top cpu and allocations by query and possibly tasks/cpu/allocations
by stage during time window.

This message was sent by Atlassian JIRA

To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message