David Smiley created LUCENE-5056:
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Summary: Indexing non-point shapes close to the poles doesn't scale
Key: LUCENE-5056
URL: https://issues.apache.org/jira/browse/LUCENE-5056
Project: Lucene - Core
Issue Type: Bug
Components: modules/spatial
Affects Versions: 4.3
Reporter: David Smiley
From: [~hdeadman]
We are seeing an issue where certain shapes are causing Solr to use up all
available heap space when a record with one of those shapes is indexed. We were
indexing polygons where we had the points going clockwise instead of
counter-clockwise and the shape would be so large that we would run out of
memory. We fixed those shapes but we are seeing this circle eat up about 700MB
of memory before we get an OutOfMemory error (heap space) with a 1GB JVM heap.
Circle(3.0 90 d=0.0499542757922153)
Google Earth can't plot that circle either, maybe it is invalid or too close to
the north pole due to the latitude of 90, but it would be nice if there was a
way for shapes to be validated before they cause an OOM error.
The objects (4.5 million) are all GeohashPrefixTree$GhCell objects in an
ArrayList owned by PrefixTreeStrategy$CellTokenStream.
Is there anyway to have a max number of cells in a shape before it is
considered too large and is not indexed? Is there a geo library that could
validate the shape as being reasonably sized and bounded before it is processed?
We are currently using Solr 4.1.
<fieldType name="location_rpt" class="solr.SpatialRecursivePrefixTreeFieldType"
spatialContextFactory="com.spatial4j.core.context.jts.JtsSpatialContextFactory"
geo="true" distErrPct="0.025" maxDistErr="0.000009" units="degrees" />
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