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Adrien Grand commented on LUCENE-10078: --------------------------------------- LUCENE-10237 introduced a very simple MergeOnFlushMergePolicy which merges together all small segments upon flush. I'd be interested in getting opinions about making it the default implementation for LogMergePolicy and TieredMergePolicy. Any thoughts? cc [~anakot] > Enable merge-on-refresh by default? > ----------------------------------- > > Key: LUCENE-10078 > URL: https://issues.apache.org/jira/browse/LUCENE-10078 > Project: Lucene - Core > Issue Type: Improvement > Reporter: Michael McCandless > Priority: Major > > This is a spinoff from the discussion in LUCENE-10073. > The newish merge-on-refresh ([crazy origin > story|https://blog.mikemccandless.com/2021/03/open-source-collaboration-or-how-we.html]) > feature is a powerful way to reduce searched segment counts, especially > helpful for applications using many indexing threads. Such usage will write > many tiny segments on each refresh, which could quickly be merged up during > the {{refresh}} operation. > We would have to implement a default for {{findFullFlushMerges}} > (LUCENE-10064 is open for this), and then we would need > {{IndexWriterConfig.getMaxFullFlushMergeWaitMillis}} a non-zero value (this > issue). -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org