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From "Ariel Weisberg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8584) Add strerror output on failed trySkipCache calls
Date Mon, 13 Apr 2015 22:29:12 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14493197#comment-14493197
] 

Ariel Weisberg commented on CASSANDRA-8584:
-------------------------------------------

Created a branch for this using NoSpamLogger
https://github.com/apache/cassandra/compare/trunk...aweisberg:C-8584?expand=1

> Add strerror output on failed trySkipCache calls
> ------------------------------------------------
>
>                 Key: CASSANDRA-8584
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8584
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Joshua McKenzie
>            Assignee: Ariel Weisberg
>            Priority: Trivial
>             Fix For: 2.1.5
>
>         Attachments: 8584_v1.txt, NoSpamLogger.java, nospamlogger.txt
>
>
> Since trySkipCache returns an errno rather than -1 and setting errno like our other CLibrary
calls, it's thread-safe and we could print out more helpful information if we failed to prompt
the kernel to skip the page cache.  That system call should always succeed unless we have
an invalid fd as it's free to ignore us.



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