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From "Vladislav Pyatkov (Jira)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-12393) Striped thread pool queue system view
Date Mon, 02 Dec 2019 06:51:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-12393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16985861#comment-16985861

Vladislav Pyatkov commented on IGNITE-12393:


I am think view of queue through system view will be not enough to understanding what issue
that is. But striped pool monitoring is right approach, but need to do it more human understandable.
In general we are already getting all queue's items in log when starvation detected, but it
does not suitable.
I think so only list of message in queue will not be useful for high level user.

I will want to see statistic information:
#  What is duration of handle of particular message?
# How long the message hold in the queue?
# What is the message mean? (in human readable format)
# How to determine not typical duration of message?

> Striped thread pool queue system view
> -------------------------------------
>                 Key: IGNITE-12393
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12393
>             Project: Ignite
>          Issue Type: Sub-task
>            Reporter: Nikolay Izhikov
>            Assignee: Nikolay Izhikov
>            Priority: Major
>              Labels: IEP-35
>             Fix For: 2.8
>          Time Spent: 10m
>  Remaining Estimate: 0h
> When in the production environment exist some cluster performance issues usually it leads
to the large striped executor queue size.
> The number of tasks in the queue can observe by {StripedExecutorMXBean#getTotalQueueSize}
metric. In the case queue size becomes large it's useful to have the ability to know what
tasks are waiting for execution in the thread pool.
> Especially, for dealing with failover scenarios.
> We should create a system views to expose information about striped executor services

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