jpountz commented on code in PR #12658:
URL: https://github.com/apache/lucene/pull/12658#discussion_r1356844946
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lucene/core/src/java/org/apache/lucene/codecs/PointsWriter.java:
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@@ -202,7 +202,7 @@ public long size() {
@Override
public int getDocCount() {
- throw new UnsupportedOperationException();
+ return -1;
Review Comment:
I don't like that we're returning -1 here since it's not supposed to be a
legal return value for `getDocCount()`. Can we do it otherwise somehow?
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lucene/core/src/java/org/apache/lucene/util/bkd/BKDWriter.java:
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@@ -1248,7 +1259,8 @@ private void writeIndex(
metaOut.writeBytes(maxPackedValue, 0, config.packedIndexBytesLength);
metaOut.writeVLong(pointCount);
- metaOut.writeVInt(docsSeen.cardinality());
+ assert docsSeen != null || docCount != -1;
Review Comment:
I believe that the assertion is stronger than that, as we can't have
docsSeen != null and docCount != -1?
```suggestion
assert docsSeen != null ^ docCount != -1;
```
##########
lucene/core/src/java/org/apache/lucene/util/bkd/BKDWriter.java:
##########
@@ -519,9 +526,8 @@ private Runnable writeFieldNDims(
// compute the min/max for this slice
computePackedValueBounds(
values, 0, Math.toIntExact(pointCount), minPackedValue,
maxPackedValue, scratchBytesRef1);
- for (int i = 0; i < Math.toIntExact(pointCount); ++i) {
- docsSeen.set(values.getDocID(i));
- }
+ // docCount has already been set by {@link BKDWriter#writeField}
+ assert docCount != -1;
Review Comment:
Should we require that docCount cannot be `-1` in writeField then?
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