[jira] [Comment Edited] (CASSANDRA-13031) Speed-up start-up sequence by avoiding un-needed flushes

["Ariel Weisberg (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-13031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15770820#comment-15770820 ] 

Ariel Weisberg edited comment on CASSANDRA-13031 at 12/22/16 7:04 PM:
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Can you run with this logging of the timing and demonstrate the the time saved by these changes during startup?

Also what is the benefit of IF EXISTS? It still has to run the query right?


was (Author: aweisberg):
Can you run with this logging of the timing and demonstrate the the time saved by these changes during startup?

> Speed-up start-up sequence by avoiding un-needed flushes
> --------------------------------------------------------
>
>                 Key: CASSANDRA-13031
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13031
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Corentin Chary
>            Priority: Minor
>             Fix For: 3.x
>
>         Attachments: 0001-Avoid-un-needed-system-flushes-on-startup.patch, debug_130131.diff
>
>
> Similar to CASSANDRA-12969, do a conditional update for all functions
>     with a forced blocking flush to avoid slowed-down boot sequences. The
>     small performance hit of doing a read is always smaller than the one
>     associated with a fsync().



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