[ https://issues.apache.org/jira/browse/LUCENE-2324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12984291#action_12984291 ]
Jason Rutherglen commented on LUCENE-2324: ------------------------------------------ bq. When a delete arrives, we should buffer in each DWPT, but also buffer into the "global" deletes pool (held in DocumentsWriter). This'll work, however it seems like it's going to be a temporary solution if we implement sequence-ids properly and/or implement non-sequential merges. In fact, with shared doc-store gone, what's holding up non-sequential merging? > 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, 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