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Jason Rutherglen commented on LUCENE-2324: ------------------------------------------ DW.deleteTerms iterates on DWPTs without acquiring the ThreadState.lock, instead DWPT.deleteTerms is synced (on DWPT). I think if a flush is occurring then deletes can get in at the same time? I don't think BufferedDeletes supports that? > Per thread DocumentsWriters that write their own private segments > ----------------------------------------------------------------- > > Key: LUCENE-2324 > URL: https://issues.apache.org/jira/browse/LUCENE-2324 > Project: Lucene - Java > Issue Type: Improvement > Components: Index > Reporter: Michael Busch > Assignee: Michael Busch > Priority: Minor > Fix For: Realtime Branch > > Attachments: LUCENE-2324-SMALL.patch, LUCENE-2324-SMALL.patch, > LUCENE-2324-SMALL.patch, LUCENE-2324-SMALL.patch, LUCENE-2324-SMALL.patch, > lucene-2324.patch, lucene-2324.patch, LUCENE-2324.patch, test.out, test.out, > test.out, test.out > > > See LUCENE-2293 for motivation and more details. > I'm copying here Mike's summary he posted on 2293: > Change the approach for how we buffer in RAM to a more isolated > approach, whereby IW has N fully independent RAM segments > in-process and when a doc needs to be indexed it's added to one of > them. Each segment would also write its own doc stores and > "normal" segment merging (not the inefficient merge we now do on > flush) would merge them. This should be a good simplification in > the chain (eg maybe we can remove the *PerThread classes). The > segments can flush independently, letting us make much better > concurrent use of IO & CPU. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org