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Posted to issues@ignite.apache.org by "Evgeny Stanilovsky (Jira)" <ji...@apache.org> on 2022/12/14 12:33:00 UTC

[jira] [Comment Edited] (IGNITE-17945) Change message in case watchdog thread observes freeze

    [ https://issues.apache.org/jira/browse/IGNITE-17945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17647073#comment-17647073 ] 

Evgeny Stanilovsky edited comment on IGNITE-17945 at 12/14/22 12:32 PM:
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[~timonin.maksim] i think that logs are the part of API because they can be parsed using regexps and so on ... 
1. what additional information you will give for customer if *or other JVM internal* *pauses* will be additionally appended ? 

2. bulk loading, also if it present in docs, is just a non informative words, i don`t know who approves such a doc, but just think as a customer - what this words mean ???

3. I also don`t know about hardware freezes, i think you talking about virtualization pauses, if it so - they also can`t be mention in this context without additional environment check. 


was (Author: zstan):
[~timonin.maksim] i think that logs are the part of API because they can be parsed using regexps and so on ... 
1. what additional information you will give for customer if *or other JVM internal* *pauses* will be additionally appended ? 

2. bulk loading, also if it present in docs, is just a non informative words, i don`t kwon who approves such a doc, but just think as a customer - what this words mean ???

3. I also don`t know about hardware freezes, i think you talking about virtualization pauses, if it so - they also can`t be mention in this context without additional environment check. 

> Change message in case watchdog thread observes freeze
> ------------------------------------------------------
>
>                 Key: IGNITE-17945
>                 URL: https://issues.apache.org/jira/browse/IGNITE-17945
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Dmitry Pavlov
>            Assignee: Julia Bakulina
>            Priority: Minor
>              Labels: ise, newbie
>             Fix For: 2.15
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> In Long JVM pause detector we warn user that the thread wasn't alive for a threshold
> Possible too long JVM pause: 500+ milliseconds.
> But it is often treated as a GC pause.
> We can change that warning to 
> Possible too long JVM pause: 500+ milliseconds. (GC pause or hardware temporary freeze)
> To enlist possible reasons behind that behaviour



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