HyukjinKwon commented on a change in pull request #24062: [SPARK-26594][SQL]
DataSourceOptions.asMap should return CaseInsensitiveMap
URL: https://github.com/apache/spark/pull/24062#discussion_r264479108
##########
File path:
sql/core/src/main/java/org/apache/spark/sql/sources/v2/DataSourceOptions.java
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@@ -92,8 +94,8 @@ public DataSourceOptions(Map<String, String> originalMap) {
}
}
- public Map<String, String> asMap() {
- return new HashMap<>(keyLowerCasedMap);
+ public CaseInsensitiveMap<String> asMap() {
Review comment:
I think there was a discussion that returning `CaseInsensitiveMap` was a bad
design before (IIRC). I think that's the reason why it return a regular map
instead. Why don't we just clearly document what it returns? I think this can
be a conservative compromise as well.
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