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https://issues.apache.org/jira/browse/LUCENE-6699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14707654#comment-14707654
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Michael McCandless commented on LUCENE-6699:
--------------------------------------------
OK I extracted some info from the failure (see the attached patch, but it makes
tons of output!):
This is the query it's running:
{noformat}
Thread[T2,5,TGRP-TestGeo3DPointField]: TEST: iter=342 shape=GeoCircle:
{planetmodel=PlanetModel.WGS84, center=[lat=-0.006450320645814321,
lon=0.004660694205115142], radius=0.00489710732634323(0.28058358162206176)}
using query: PointInGeo3DShapeQuery: field=point:PlanetModel:
PlanetModel.WGS84 Shape: GeoCircle: {planetmodel=PlanetModel.WGS84,
center=[lat=-0.006450320645814321, lon=0.004660694205115142],
radius=0.00489710732634323(0.28058358162206176)}
{noformat}
Then, while BKD is recursing, it hits a point where this cell is
supposedly (incorrectly) fully contained in the query shape:
{noformat}
Thread[T2,5,TGRP-TestGeo3DPointField]: switch to addAll at cell
x=1.0010822580620098 to 1.0010945779732867 y=0.007079167343247293 to
0.007541006774427837 z=-0.0021855011220022575 to -0.001896122718181518
{noformat}
But then this docID fails the new assert (is not within the query shape):
{noformat}
T2: FAILED: docID=1123
accept docID=1123 point: x=1.0010893045436076 y=0.007380935180644008
z=-0.002140671370616495
{noformat}
> Integrate lat/lon BKD and spatial3d
> -----------------------------------
>
> Key: LUCENE-6699
> URL: https://issues.apache.org/jira/browse/LUCENE-6699
> Project: Lucene - Core
> Issue Type: New Feature
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Attachments: Geo3DPacking.java, LUCENE-6699.patch, LUCENE-6699.patch,
> LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch,
> LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch,
> LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch,
> LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch,
> LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch,
> LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch, LUCENE-6699.patch
>
>
> I'm opening this for discussion, because I'm not yet sure how to do
> this integration, because of my ignorance about spatial in general and
> spatial3d in particular :)
> Our BKD tree impl is very fast at doing lat/lon shape intersection
> (bbox, polygon, soon distance: LUCENE-6698) against previously indexed
> points.
> I think to integrate with spatial3d, we would first need to record
> lat/lon/z into doc values. Somewhere I saw discussion about how we
> could stuff all 3 into a single long value with acceptable precision
> loss? Or, we could use BinaryDocValues? We need all 3 dims available
> to do the fast per-hit query time filtering.
> But, second: what do we index into the BKD tree? Can we "just" index
> earth surface lat/lon, and then at query time is spatial3d able to
> give me an enclosing "surface lat/lon" bbox for a 3d shape? Or
> ... must we index all 3 dimensions into the BKD tree (seems like this
> could be somewhat wasteful)?
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