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https://issues.apache.org/jira/browse/LUCENE-6908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15036726#comment-15036726
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Michael McCandless commented on LUCENE-6908:
--------------------------------------------
Thanks [~nknize]! Lots of geo math that I don't understand :)
It hit a failure after some beasting:
{noformat}
[junit4] Started J0 PID(28075@localhost).
[junit4] Suite: org.apache.lucene.util.TestGeoUtils
[junit4] 1> doc=2304 matched but should not
[junit4] 1> lon=-52.68950667232275 lat=-89.24937685020268
distanceMeters=267809.96722662856 vs radiusMeters=263432.23741533695
[junit4] 2> NOTE: reproduce with: ant test -Dtestcase=TestGeoUtils
-Dtests.method=testGeoRelations -Dtests.seed=3B46325723FB86A9
-Dtests.multiplier=5 -Dtests.slow=true
-Dtests.linedocsfile=/lucenedata/hudson.enwiki.random.lines.txt.fixed
-Dtests.locale=vi_VN -Dtests.timezone=America/Halifax -Dtests.asserts=true
-Dtests.file.encoding=UTF-8
[junit4] FAILURE 2.61s | TestGeoUtils.testGeoRelations <<<
[junit4] > Throwable #1: java.lang.AssertionError: 1 incorrect hits (see
above)
[junit4] > at
__randomizedtesting.SeedInfo.seed([3B46325723FB86A9:F96526E2570CF017]:0)
[junit4] > at
org.apache.lucene.util.TestGeoUtils.testGeoRelations(TestGeoUtils.java:533)
[junit4] > at java.lang.Thread.run(Thread.java:745)
[junit4] 2> NOTE: test params are:
codec=HighCompressionCompressingStoredFields(storedFieldsFormat=CompressingStoredFieldsFormat(compressionMode=HIGH_COMPRESSION,
chunkSize=9, maxDocsPerChunk=323, blockSize=5),
termVectorsFormat=CompressingTermVectorsFormat(compressionMode=HIGH_COMPRESSION,
chunkSize=9, blockSize=5)),
sim=RandomSimilarityProvider(queryNorm=true,coord=yes): {}, locale=vi_VN,
timezone=America/Halifax
[junit4] 2> NOTE: Linux 3.13.0-61-generic amd64/Oracle Corporation
1.8.0_60 (64-bit)/cpus=8,threads=1,free=396588944,total=504889344
[junit4] 2> NOTE: All tests run in this JVM: [TestGeoUtils]
[junit4] Completed [1/1] in 2.77s, 1 test, 1 failure <<< FAILURES!
{noformat}
Also, this comment seems stale now? (We seem to be using this method?):
{noformat}
// NOTE: not used for 2d at the moment. used for 3d w/ altitude (we can keep or
add back)
{noformat}
> TestGeoUtils.testGeoRelations is buggy with irregular rectangles
> ----------------------------------------------------------------
>
> Key: LUCENE-6908
> URL: https://issues.apache.org/jira/browse/LUCENE-6908
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Nicholas Knize
> Attachments: LUCENE-6908.patch, LUCENE-6908.patch, LUCENE-6908.patch
>
>
> The {{.testGeoRelations}} method doesn't exactly test the behavior of
> GeoPoint*Query as its using the BKD split technique (instead of quad cell
> division) to divide the space on each pass. For "large" distance queries this
> can create a lot of irregular rectangles producing large radial distortion
> error when using the cartesian approximation methods provided by
> {{GeoUtils}}. This issue improves the accuracy of GeoUtils cartesian
> approximation methods on irregular rectangles without having to cut over to
> an expensive oblate geometry approach.
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