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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (LUCENE-4323) Add max cfs segment size to LogMergePolicy and TieredMergePolicy
Date Mon, 10 Sep 2012 18:05:07 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-4323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Muir resolved LUCENE-4323.
---------------------------------

    Resolution: Fixed

this is actually fixed, I reopened it because of a jenkins fail, but it was only slightly
related (more to Uwe's new test randomization)
                
> Add max cfs segment size to LogMergePolicy and TieredMergePolicy
> ----------------------------------------------------------------
>
>                 Key: LUCENE-4323
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4323
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/index
>    Affects Versions: 4.0-BETA
>            Reporter: Alexey Lef
>            Assignee: Uwe Schindler
>            Priority: Minor
>             Fix For: 5.0, 4.0
>
>         Attachments: diskFullFix.patch, LUCENE-4323.patch, LUCENE-4323.patch
>
>
> Our application is managing thousands of indexes ranging from a few KB to a few GB in
size. To keep the number of files under control and at the same time avoid the overhead of
compound file format for large segments, we would like to keep only small segments as CFS.
The meaning of "small" here is in absolute byte size terms, not as a percentage of the overall
index. It is ok and in fact desirable to have the entire index as CFS as long as it is below
the threshold.
> The attached patch adds a new configuration option maxCFSSegmentSize which sets the absolute
limit on the compound file segment size, in addition to the existing noCFSRatio, i.e. the
lesser of the two will be used. The default is to allow any size (Long.MAX_VALUE) so that
the default behavior is exactly as it was before.
> The patch is for the trunk as of Aug 23, 2012.

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