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https://issues.apache.org/jira/browse/LUCENE-6529?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hoss Man updated LUCENE-6529:
-----------------------------
Attachment: LUCENE-6529.patch
see patch for test case, a couple of example seeds that fail for me...
{noformat}
ant test -Dtestcase=TestUninvertingReader
-Dtests.method=testSortedSetIntegerManyValues -Dtests.seed=3A8A592786F36F30
-Dtests.slow=true -Dtests.asserts=true
ant test -Dtestcase=TestUninvertingReader
-Dtests.method=testSortedSetIntegerManyValues -Dtests.seed=C7B1C0FEDB6252C4
-Dtests.slow=true -Dtests.locale=ar_BH -Dtests.timezone=Asia/Yakutsk
-Dtests.asserts=true -Dtests.file.encoding=US-ASCII
ant test -Dtestcase=TestUninvertingReader
-Dtests.method=testSortedSetIntegerManyValues -Dtests.seed=6C6936440B92E593
-Dtests.slow=true -Dtests.locale=de_GR -Dtests.timezone=Atlantic/Bermuda
-Dtests.asserts=true -Dtests.file.encoding=UTF-8
{noformat}
But you can find lots more fairely quickly with...
{noformat}
ant beast -Dbeast.iters=100 -Dtestcase=TestUninvertingReader
-Dtests.method=testSortedSetIntegerManyValues -Dtests.slow=true
-Dtests.asserts=true -Dtests.codec=random
{noformat}
Meanwhile this never fails on me...
{noformat}
ant beast -Dbeast.iters=100 -Dtestcase=TestUninvertingReader
-Dtests.method=testSortedSetIntegerManyValues -Dtests.slow=true
-Dtests.asserts=true -Dtests.codec=default
{noformat}
> NumericFields + SlowCompositeReaderWrapper + UninvertedReader +
> -Dtests.codec=random can results in incorrect SortedSetDocValues
> ---------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-6529
> URL: https://issues.apache.org/jira/browse/LUCENE-6529
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Hoss Man
> Attachments: LUCENE-6529.patch
>
>
> Digging into SOLR-7631 and SOLR-7605 I became fairly confident that the only
> explanation of the behavior i was seeing was some sort of bug in either the
> randomized codec/postings-format or the UninvertedReader, that was only
> evident when two were combined and used on a multivalued Numeric Field using
> precision steps. But since i couldn't find any -Dtests.codec or
> -Dtests.postings.format options that would cause the bug 100% regardless of
> seed, I switched tactices and focused on reproducing the problem using
> UninvertedReader directly and checking the SortedSetDocValues.getValueCount().
> I now have a test that fails frequently (and consistently for any seed i
> find), but only with -Dtests.codec=random -- override it with
> -Dtests.codec=default and everything works fine (based on the exhaustive
> testing I did in the linked issues, i suspect every named codec works fine -
> but i didn't re-do that testing here)
> The failures only seem to happen when checking the
> SortedSetDocValues.getValueCount() of a SlowCompositeReaderWrapper around the
> UninvertedReader -- which suggests the root bug may actually be in
> SlowCompositeReaderWrapper? (but still has some dependency on the random
> codec)
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