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From "Jason Rutherglen (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1750) Create a MergePolicy that limits the maximum size of it's segments
Date Sat, 18 Jul 2009 15:30:14 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1750?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Rutherglen updated LUCENE-1750:
-------------------------------------

    Issue Type: Improvement  (was: Bug)
       Summary: Create a MergePolicy that limits the maximum size of it's segments  (was:
LogByteSizeMergePolicy doesn't keep segments under maxMergeMB)

> Create a MergePolicy that limits the maximum size of it's segments
> ------------------------------------------------------------------
>
>                 Key: LUCENE-1750
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1750
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>    Affects Versions: 2.4.1
>            Reporter: Jason Rutherglen
>            Priority: Minor
>             Fix For: 3.1
>
>         Attachments: LUCENE-1750.patch
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> Basically I'm trying to create largish 2-4GB shards using
> LogByteSizeMergePolicy, however I've found in the attached unit
> test segments that exceed maxMergeMB.
> The goal is for segments to be merged up to 2GB, then all
> merging to that segment stops, and then another 2GB segment is
> created. This helps when replicating in Solr where if a single
> optimized 60GB segment is created, the machine stops working due
> to IO and CPU starvation. 

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