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https://issues.apache.org/jira/browse/LUCENE-6753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14705146#comment-14705146
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ASF subversion and git services commented on LUCENE-6753:
---------------------------------------------------------
Commit 1696808 from [~rcmuir] in branch 'dev/trunk'
[ https://svn.apache.org/r1696808 ]
LUCENE-6753: defend against MockRandomMergePolicy
> TestFieldSkew test failure
> --------------------------
>
> Key: LUCENE-6753
> URL: https://issues.apache.org/jira/browse/LUCENE-6753
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Robert Muir
>
> This test adds empty documents with no field contents, then reopens and
> asserts that scores are the same. Its not supposed to be a random test, it
> just does a simple execution against each query.
> But it fails with this seed in trunk (i committed some improved debugging):
> {noformat}
> ant test -Dtestcase=TestSimilarity2 -Dtests.method=testNoFieldSkew
> -Dtests.seed=216F1F3C38561BEF -Dtests.multiplier=2 -Dtests.nightly=true
> -Dtests.slow=true -Dtests.locale=es_ES -Dtests.timezone=America/Catamarca
> -Dtests.asserts=true -Dtests.file.encoding=UTF-8
> [junit4] > Throwable #1: java.lang.AssertionError: DefaultSimilarity:
> actual=0.0 = No matching clauses
> [junit4] > ,expected=0.2169777 = sum of:
> [junit4] > 0.10848885 = weight(foo:bar in 0) [DefaultSimilarity],
> result of:
> [junit4] > 0.10848885 = score(doc=0,freq=1.0), product of:
> [junit4] > 0.70710677 = queryWeight, product of:
> [junit4] > 0.30685282 = idf(docFreq=1, docCount=1)
> [junit4] > 2.3043842 = queryNorm
> [junit4] > 0.15342641 = fieldWeight in 0, product of:
> [junit4] > 1.0 = tf(freq=1.0), with freq of:
> [junit4] > 1.0 = termFreq=1.0
> [junit4] > 0.30685282 = idf(docFreq=1, docCount=1)
> [junit4] > 0.5 = fieldNorm(doc=0)
> [junit4] > 0.10848885 = weight(foo:baz in 0) [DefaultSimilarity],
> result of:
> [junit4] > 0.10848885 = score(doc=0,freq=1.0), product of:
> [junit4] > 0.70710677 = queryWeight, product of:
> [junit4] > 0.30685282 = idf(docFreq=1, docCount=1)
> [junit4] > 2.3043842 = queryNorm
> [junit4] > 0.15342641 = fieldWeight in 0, product of:
> [junit4] > 1.0 = tf(freq=1.0), with freq of:
> [junit4] > 1.0 = termFreq=1.0
> [junit4] > 0.30685282 = idf(docFreq=1, docCount=1)
> [junit4] > 0.5 = fieldNorm(doc=0)
> [junit4] > expected:<0.21697770059108734> but was:<0.0>
> [junit4] > at
> __randomizedtesting.SeedInfo.seed([216F1F3C38561BEF:89FA6BFD1F67BF87]:0)
> [junit4] > at
> org.apache.lucene.search.similarities.TestSimilarity2.testNoFieldSkew(TestSimilarity2.java:201)
> [junit4] > at java.lang.Thread.run(Thread.java:745)
> [junit4] 2> NOTE: test params are:
> codec=DummyCompressingStoredFields(storedFieldsFormat=CompressingStoredFieldsFormat(compressionMode=DUMMY,
> chunkSize=16060, maxDocsPerChunk=1, blockSize=6),
> termVectorsFormat=CompressingTermVectorsFormat(compressionMode=DUMMY,
> chunkSize=16060, blockSize=6)), sim=DefaultSimilarity, locale=es_ES,
> timezone=America/Catamarca
> [junit4] 2> NOTE: Linux 3.19.0-25-generic amd64/Oracle Corporation
> 1.8.0_45 (64-bit)/cpus=8,threads=1,free=140426184,total=189267968
> [junit4] 2> NOTE: All tests run in this JVM: [TestSimilarity2]
> [junit4] Completed [1/1] in 0.64s, 1 test, 1 failure <<< FAILURES!
> {noformat}
> This is scary, it means the first reopen did not make documents visible when
> it should have? (or there is a sneaky test bug)
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