uschindler commented on code in PR #13229:
URL: https://github.com/apache/lucene/pull/13229#discussion_r1542132603
##########
lucene/core/src/java/org/apache/lucene/store/IOContext.java:
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@@ -88,4 +84,18 @@ public IOContext(MergeInfo mergeInfo) {
// Merges read input segments sequentially.
this(Context.MERGE, mergeInfo, null, ReadAdvice.SEQUENTIAL);
}
+
+ /**
+ * Return an updated {@link IOContext} that has the provided {@link
ReadAdvice} if the {@link
+ * Context} is a {@link Context#READ} context, otherwise return this
existing instance. This helps
+ * preserve a {@link ReadAdvice#SEQUENTIAL} advice for merging, which is
always the right choice,
+ * while allowing {@link IndexInput}s open for searching to use arbitrary
{@link ReadAdvice}s.
+ */
+ public IOContext toReadAdvice(ReadAdvice advice) {
+ if (context == Context.READ) {
Review Comment:
I think "withReadAdvice" sounds better, because we do not convert to a
readAdvice, but we create a new context with different readAdvice. Maybe native
speakers can suggest a better name.
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