[jira] [Resolved] (LUCENE-7059) Verify that 1D point values are visited in order

["Michael McCandless (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-7059?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless resolved LUCENE-7059.
----------------------------------------
    Resolution: Fixed

> Verify that 1D point values are visited in order
> ------------------------------------------------
>
>                 Key: LUCENE-7059
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7059
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>            Priority: Blocker
>             Fix For: master, 6.0
>
>         Attachments: LUCENE-7059.patch
>
>
> The new PointInSetQuery (LUCENE-7048) hit a tricky test failure
> (https://builds.apache.org/job/Lucene-Solr-Tests-trunk-Java8/871/)
> where point values were sometimes not visited in order like it
> expected.
> I pushed a hack to fix the query, but I think we should do a better
> fix, here, making the "values in order in the 1D case" part of the
> API, fixing CheckIndex, AssertingPointFormat to verify this, and
> removing the buggy MultiPointValues.
> I also found a possibly serious bug in BKDWriter, where it was doing
> {{writeInt/writeLong}} to its offline files, but then reading with
> {{readVInt/readVLong}}!  It's hard to provoke, though: it only strikes
> in the tie-break case (same values across docs), and even then only if
> the {{IntroSorter}} does a non-stable sort.  I made a failing test
> case and fixed that bug, and also removed the unnecessary ord tie
> breaking from BKDWriter's comparator.
> Finally, I saw {{BKDWriter}} was failing to pass on its
> {{maxMBSortInHeap}} down to {{OfflineSorter}}, and fixed that.



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