jpountz commented on a change in pull request #747: LUCENE-8888: Improve
distribution of points with data dimension in BKD tree leaves
URL: https://github.com/apache/lucene-solr/pull/747#discussion_r300244789
##########
File path:
lucene/core/src/java/org/apache/lucene/util/bkd/BKDRadixSelector.java
##########
@@ -324,23 +337,22 @@ protected int byteAt(int i, int k) {
assert k >= 0 : "negative prefix " + k;
if (k < dimCmpBytes) {
// dim bytes
- return points.block[i * packedBytesLength + offset + k] & 0xff;
+ return points.block[i * packedBytesDocIDLength + dimOffset + k] &
0xff;
} else {
- // doc id
- int s = 3 - (k - dimCmpBytes);
- return (points.docIDs[i] >>> (s * 8)) & 0xff;
+ // data bytes
+ return points.block[i * packedBytesDocIDLength + dataOffset + k] &
0xff;
}
}
@Override
protected Selector getFallbackSelector(int d) {
- int skypedBytes = d + commonPrefix;
- final int start = dim * bytesPerDim + skypedBytes;
- final int end = dim * bytesPerDim + bytesPerDim;
+ final int skypedBytes = d + commonPrefixLength;
+ final int dimStart = dim * bytesPerDim + skypedBytes;
+ final int dimEnd = dim * bytesPerDim + bytesPerDim;
+ final int dataOffset = numIndexDims * bytesPerDim;
+ final int dataLength = (numDataDims - numIndexDims) * bytesPerDim +
Integer.BYTES;
Review comment:
I'm assuming the Integer.BYTES is about the doc ID, maybe add a comment to
clarify since the variable name doesn't imply that this includes the doc ID?
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
