Jackie-Jiang commented on a change in pull request #6409:
URL: https://github.com/apache/incubator-pinot/pull/6409#discussion_r557019187
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File path:
pinot-core/src/main/java/org/apache/pinot/core/segment/creator/impl/SegmentColumnarIndexCreator.java
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@@ -260,6 +274,19 @@ public void init(SegmentGeneratorConfig
segmentCreationSpec, SegmentIndexCreatio
_jsonIndexCreatorMap.put(columnName, jsonIndexCreator);
}
+ H3IndexConfig h3IndexConfig = h3IndexConfigs.get(columnName);
+ if (h3IndexConfig != null) {
+ Preconditions
+ .checkState(fieldSpec.isSingleValueField(), "H3 index is currently
only supported on single-value columns");
+ Preconditions.checkState(fieldSpec.getDataType() == DataType.BYTES,
+ "H3 index is currently only supported on BYTES columns");
+ H3IndexResolution resolution = h3IndexConfig.getResolution();
+ GeoSpatialIndexCreator h3IndexCreator =
+ segmentCreationSpec.isOnHeap() ? new
OnHeapH3IndexCreator(_indexDir, columnName, resolution)
Review comment:
When memory is not an issue (e.g. hadoop), on-heap creator is more
efficient
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