benwtrent commented on code in PR #13561:
URL: https://github.com/apache/lucene/pull/13561#discussion_r1672957009
##########
lucene/core/src/java/org/apache/lucene/util/hnsw/HnswGraphBuilder.java:
##########
@@ -156,14 +157,20 @@ public OnHeapHnswGraph build(int maxOrd) throws
IOException {
infoStream.message(HNSW_COMPONENT, "build graph from " + maxOrd + "
vectors");
}
addVectors(maxOrd);
- return hnsw;
Review Comment:
I think checking for `frozen` at the start of build is wise and prevents
info stream writing when we are already frozen.
##########
lucene/core/src/java/org/apache/lucene/util/hnsw/HnswGraphBuilder.java:
##########
@@ -156,14 +157,20 @@ public OnHeapHnswGraph build(int maxOrd) throws
IOException {
infoStream.message(HNSW_COMPONENT, "build graph from " + maxOrd + "
vectors");
}
addVectors(maxOrd);
- return hnsw;
+ return getCompletedGraph();
}
@Override
public void setInfoStream(InfoStream infoStream) {
this.infoStream = infoStream;
}
+ @Override
+ public OnHeapHnswGraph getCompletedGraph() {
+ frozen = true;
+ return getGraph();
+ }
+
@Override
public OnHeapHnswGraph getGraph() {
return hnsw;
Review Comment:
We should check for frozen directly in `addVectors` to prevent infoStream
writing if there is some sub-class calling this method erroneously
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