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https://issues.apache.org/jira/browse/LUCENE-5199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13756750#comment-13756750
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Robert Muir commented on LUCENE-5199:
-------------------------------------
I will commit it, i am worried Billy will hit other problems: because in
general old codec components should not be "mixed in"
When we test an old codec, it should always be "the whole codec" to
realistically simulate the backwards format...
> Improve LuceneTestCase.defaultCodecSupportsDocsWithField to check the actual
> DocValuesFormat used per-field
> -----------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-5199
> URL: https://issues.apache.org/jira/browse/LUCENE-5199
> Project: Lucene - Core
> Issue Type: Improvement
> Components: general/test
> Reporter: Shai Erera
> Assignee: Shai Erera
> Fix For: 5.0, 4.5
>
> Attachments: LUCENE-5199.patch, LUENE-5199.patch
>
>
> On LUCENE-5178 Han reported the following test failure:
> {noformat}
> [junit4] FAILURE 0.27s | TestRangeAccumulator.testMissingValues <<<
> [junit4] > Throwable #1: org.junit.ComparisonFailure: expected:<...(0)
> [junit4] > less than 10 ([8)
> [junit4] > less than or equal to 10 (]8)
> [junit4] > over 90 (8)
> [junit4] > 9...> but was:<...(0)
> [junit4] > less than 10 ([28)
> [junit4] > less than or equal to 10 (2]8)
> [junit4] > over 90 (8)
> [junit4] > 9...>
> [junit4] > at
> __randomizedtesting.SeedInfo.seed([815B6AA86D05329C:EBC638EE498F066D]:0)
> [junit4] > at
> org.apache.lucene.facet.range.TestRangeAccumulator.testMissingValues(TestRangeAccumulator.java:670)
> [junit4] > at java.lang.Thread.run(Thread.java:722)
> {noformat}
> which can be reproduced with
> {noformat}
> tcase=TestRangeAccumulator -Dtests.method=testMissingValues
> -Dtests.seed=815B6AA86D05329C -Dtests.slow=true
> -Dtests.postingsformat=Lucene41 -Dtests.locale=ca
> -Dtests.timezone=Australia/Currie -Dtests.file.encoding=UTF-8
> {noformat}
> It seems that the Codec that is picked is a Lucene45Codec with
> Lucene42DVFormat, which does not support docsWithFields for numericDV. We
> should improve LTC.defaultCodecSupportsDocsWithField to take a list of fields
> and check that the actual DVF used for each field supports it.
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