dungba88 commented on code in PR #12738:
URL: https://github.com/apache/lucene/pull/12738#discussion_r1380008658
##########
lucene/core/src/java/org/apache/lucene/util/fst/NodeHash.java:
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@@ -328,7 +298,100 @@ private void rehash(long lastNodeAddress) throws
IOException {
}
mask = newMask;
- entries = newEntries;
+ fstNodeAddress = newEntries;
+ copiedNodeAddress = newCopiedOffsets;
+ }
+
+ // hash code for a frozen node. this must precisely match the hash
computation of an unfrozen
+ // node!
+ private long hash(long node, long pos) throws IOException {
+ FST.BytesReader in = getBytesReader(node, pos);
Review Comment:
Actually I realized that nodeAddress can be retrieved from hashSlot, which
is just getting from the fstNodeAddress with the hash slot. It means we need an
extra get() (since the nodeAddress is already known by this point). But that
would also make it more consistent? Like passing an inconsistent value of
hashSlot and nodeAddress could be a problem. (We can get the nodeAddress based
on the hashSlot, but not the other way)
Another way is make the BytesReader store the nodeAddress, and read from
there. We could use assertion to make sure the hashSlot and nodeAddress is
consistent.
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