[ https://issues.apache.org/jira/browse/LUCENE-4462?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Simon Willnauer updated LUCENE-4462: ------------------------------------ Attachment: LUCENE-4462.patch here is a new patch adding back the safety forcePurge. I will commit this to trunk and let it bake in a bit before I backport. I will keep this issue open until it's ported. > Publishing flushed segments is single threaded and too costly > ------------------------------------------------------------- > > Key: LUCENE-4462 > URL: https://issues.apache.org/jira/browse/LUCENE-4462 > Project: Lucene - Core > Issue Type: Improvement > Components: core/index > Affects Versions: 4.0-ALPHA, 4.0-BETA, 4.0 > Reporter: Michael McCandless > Assignee: Simon Willnauer > Fix For: 4.1, 5.0 > > Attachments: LUCENE-4462.patch, LUCENE-4462.patch > > > Spinoff from http://lucene.markmail.org/thread/4li6bbomru35qn7w > The new TestBagOfPostings failed the build because it timed out after 2 hours > ... but in digging I found that it was a starvation issue: the 4 threads were > flushing segments much faster than the 1 thread could publish them. > I think this is because publishing segments > (DocumentsWriter.publishFlushedSegment) is actually rather costly (creates > CFS file if necessary, writes .si, etc.). > I committed a workaround for now, to prevent starvation (see svn diff -c > 1394704 https://svn.apache.org/repos/asf/lucene/dev/trunk), but we really > should address the root cause by moving these costly ops into flush() so that > publishing is a low cost operation. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org