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From "Christopher Tubbs (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-3617) unloadTablet log message in TabletServer is spammy w/o purpose
Date Thu, 09 Apr 2015 17:50:12 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14487748#comment-14487748
] 

Christopher Tubbs commented on ACCUMULO-3617:
---------------------------------------------

The waffling is due to the fact that while it's trivial to remove all such log messages, it
is slightly more complex to nuke only the unloadTablet message. We'd have to add conditional
checks to filter which message type it is, and log them if they are not the spammy unloadTablet
one.

It's not clear to me that those conditional checks to single out the unloadTablet message
from the others is worthwhile.

> unloadTablet log message in TabletServer is spammy w/o purpose
> --------------------------------------------------------------
>
>                 Key: ACCUMULO-3617
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3617
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: tserver
>    Affects Versions: 1.5.2, 1.6.2
>            Reporter: Josh Elser
>            Priority: Minor
>              Labels: newbie
>             Fix For: 1.8.0, 1.7.1
>
>
> Looking at TabletServer logs, the following message can be overwhelming:
> {noformat}
> 2015-02-24 01:57:34,723 [tserver.TabletServer] DEBUG: Got unloadTablet message from user:
!SYSTEM
> {noformat}
> This message alone tells us nothing (no context about the tablet(s) requested to be unloaded,
only that there was a request to unload a tablet), and can appear in the log upwards of 20
times a millisecond.
> It might be better if the TabletServer did...
> * Batched log messages "N unloadTablet requests in $duration"
> * Include extent to unload
> * Kill the log message entirely.



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