[ https://issues.apache.org/jira/browse/LUCENE-4455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless reassigned LUCENE-4455: ------------------------------------------ Assignee: Michael McCandless > CheckIndex shows wrong segment size in 4.0 because > SegmentInfoPerCommit.sizeInBytes counts every file 2 times; check for > deletions is negated and results in wrong output > ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- > > Key: LUCENE-4455 > URL: https://issues.apache.org/jira/browse/LUCENE-4455 > Project: Lucene - Core > Issue Type: Bug > Components: core/index > Affects Versions: 4.0-BETA > Reporter: Uwe Schindler > Assignee: Michael McCandless > Priority: Blocker > Fix For: 4.0 > > > I found this bug in 4.0-RC1 when I compared the checkindex outputs for 4.0 > and 3.6.1: > - The segment size is twice as big as reported by "ls -lh". The reason is > that SegmentInfoPerCommit.sizeInBytes counts every file 2 times. This seems > to be serious (it is just statistics), because MergePolicy chooses merges > because of this. On the other hand if all segments are twice as big it should > not affect merging behaviour (unless absolute sizes in megabytes are used). > So we should really fix this - sorry for investigating this so late! > - The deletions in the segments are inverted. Segments that have no > deleteions are reported as those *with deletions* but delGen=-1, and those > with deletions show "no deletions", this is not serious, but should be fixed, > too. > There is one "bug" in sizeInBytes (which we should NOT fix), is that for 3.x > indexes, if they are from 3.0 and have shared doc stores they are > overestimated. But that's fine. For this case, the index was a 3.6.1 segment > and a 4.0 segment, both showed double size. -- 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