[jira] [Commented] (CASSANDRA-5013) disallow bloom filter false positive chance of 0

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-5013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13526523#comment-13526523 ] 

Jonathan Ellis commented on CASSANDRA-5013:
-------------------------------------------

Where are we converting zero to default?  ISTM that setting to zero is likely to either mean

# user is asking for no false positives at all, which is impossible.  should give an error instead of changing to default.
# user is asking for no bloom filter at all, in which changing to default is also not what we want to do.
                
> disallow bloom filter false positive chance of 0
> ------------------------------------------------
>
>                 Key: CASSANDRA-5013
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5013
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Config
>            Reporter: Matthew F. Dennis
>            Assignee: Brandon Williams
>            Priority: Minor
>             Fix For: 1.1.8
>
>         Attachments: 5013.txt
>
>
> {pre}
> ERROR [CompactionExecutor:16] 2012-11-30 08:44:32,546 SSTableWriter.java (line 414) Bloom filter FP chance of zero isn't supposed to happen
> {pre}
> when attempting to set it to zero, C* should either disallow the change or should just interpret 0 as "make it the default" and not continually log the above error message

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira