Robert Muir created LUCENE-6753:
-----------------------------------
Summary: 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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