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https://issues.apache.org/jira/browse/LUCENE-847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-847:
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Attachment: LUCENE-847.take4.patch
OK new patch:
- Added the missing MergePolicy.java from last time that Ning caught
(thanks!)
- Fixed some javadocs
- Relaxed synchronization of merging so that merges can run
concurrently with flushing if you are using multiple thread to do
indexing. This gains concurrency of merging even if you are not
using CMPW. But I left flushing as synchronized; I think we can
relax this at some point in the future.
- Fixed some concurrency issues
- Added "minMergeDocs" to LogDocMergePolicy and "minMergeMB" to
LogByteSizeMergePolicy; set their defaults as described in
LUCENE-845.
Still a few small things to do. I think it's getting close.
> Factor merge policy out of IndexWriter
> --------------------------------------
>
> Key: LUCENE-847
> URL: https://issues.apache.org/jira/browse/LUCENE-847
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Reporter: Steven Parkes
> Assignee: Steven Parkes
> Fix For: 2.3
>
> Attachments: concurrentMerge.patch, LUCENE-847.patch.txt,
> LUCENE-847.patch.txt, LUCENE-847.take3.patch, LUCENE-847.take4.patch,
> LUCENE-847.txt
>
>
> If we factor the merge policy out of IndexWriter, we can make it pluggable,
> making it possible for apps to choose a custom merge policy and for easier
> experimenting with merge policy variants.
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