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https://issues.apache.org/jira/browse/LUCENE-5587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13964230#comment-13964230
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Michael McCandless commented on LUCENE-5587:
--------------------------------------------
bq. perhaps it's good that flush and merge are consistent?
We could think about that... today, the order we write doc values fields isn't
specified (vs e.g. postings, which is in UTF16 field name sort order).
> TestSimpleTextDocValuesFormat.testMergeStability -seed 161C8BDA82B2190F
> -----------------------------------------------------------------------
>
> Key: LUCENE-5587
> URL: https://issues.apache.org/jira/browse/LUCENE-5587
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 4.8, 5.0
>
> Attachments: LUCENE-5587.patch
>
>
> Fails with this:
> {noformat}
> java.lang.AssertionError: expected:<{null=91, dat=39791, gen=36, pst=24,
> inf=697, fld=14434}> but was:<{null=91, dat=39792, gen=36, pst=24, inf=697,
> fld=14434}>
> at
> __randomizedtesting.SeedInfo.seed([161C8BDA82B2190F:6250CDF58F581BB9]:0)
> at org.junit.Assert.fail(Assert.java:93)
> at org.junit.Assert.failNotEquals(Assert.java:647)
> at org.junit.Assert.assertEquals(Assert.java:128)
> at org.junit.Assert.assertEquals(Assert.java:147)
> at
> org.apache.lucene.index.BaseIndexFileFormatTestCase.testMergeStability(BaseIndexFileFormatTestCase.java:111)
> at
> org.apache.lucene.index.BaseDocValuesFormatTestCase.testMergeStability(BaseDocValuesFormatTestCase.java:70)
> {noformat}
> I'm digging ... it's because we add the DV fields in a different order for
> the 2nd index ... not sure why the other DVFs aren't affected (or maybe they
> are).
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