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Jul 2, 2009, 2:55 PM
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[jira] Updated: (LUCENE-1726) IndexWriter.readerPool create new segmentReader outside of sync block
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[ https://issues.apache.org/jira/browse/LUCENE-1726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Rutherglen updated LUCENE-1726:
-------------------------------------
Attachment: LUCENE-1726.patch
We don't block accessing readers in the IW.readerPool when a new
segmentReader is being warmed/instantiated. This is important
when new segmentReaders on large new segments are being accessed
for the first time. Otherwise today IW.getReader may wait while
the new SR is being created.
* IW.readerPool map values are now of type MapValue
* We synchronize on the MapValue in methods that access the SR
* synchronize for the entire readerPool.get method is removed.
* All tests pass
> IndexWriter.readerPool create new segmentReader outside of sync block
> ---------------------------------------------------------------------
>
> Key: LUCENE-1726
> URL: https://issues.apache.org/jira/browse/LUCENE-1726
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Affects Versions: 2.4.1
> Reporter: Jason Rutherglen
> Priority: Trivial
> Fix For: 2.9
>
> Attachments: LUCENE-1726.patch
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> I think we will want to do something like what field cache does
> with CreationPlaceholder for IndexWriter.readerPool. Otherwise
> we have the (I think somewhat problematic) issue of all other
> readerPool.get* methods waiting for an SR to warm.
> It would be good to implement this for 2.9.
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[jira] Updated: (LUCENE-1726) IndexWriter.readerPool create new segmentReader outside of sync block
