jpountz commented on code in PR #12206:
URL: https://github.com/apache/lucene/pull/12206#discussion_r1137412879
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lucene/core/src/java/org/apache/lucene/store/ByteBuffersDataInput.java:
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@@ -71,7 +71,11 @@ public ByteBuffersDataInput(List<ByteBuffer> buffers) {
this.blockMask = (1 << blockBits) - 1;
}
- this.size = Arrays.stream(blocks).mapToLong(block ->
block.remaining()).sum();
+ long size = 0;
+ for (ByteBuffer block : blocks) {
+ size += block.remaining();
+ }
+ this.size = size;
Review Comment:
When running some workloads with index sorting enabled, these two streams
showed up on the profile and changing the logic to be more procedural indeed
made things a bit faster. For reference, `toDataInput` is called on every
unique term when index sorting is enabled, and often the postings list is short.
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