findepi commented on code in PR #11304:
URL: https://github.com/apache/iceberg/pull/11304#discussion_r1870885597
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api/src/main/java/org/apache/iceberg/util/CharSequenceMap.java:
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@@ -132,12 +133,12 @@ public Set<CharSequence> keySet() {
keySet.add(wrapper.get());
}
- return keySet;
+ return Collections.unmodifiableSet(keySet);
Review Comment:
> Generally writing a good Map implementation from scratch is super hard.
... and sometimes not worth the effort
After all, one can have map-like class without implementing Map interface
-- https://github.com/apache/iceberg/pull/11704
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