walterddr commented on code in PR #11208:
URL: https://github.com/apache/pinot/pull/11208#discussion_r1280699265
##########
pinot-query-planner/src/main/java/org/apache/pinot/query/planner/logical/LiteralHintUtils.java:
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@@ -46,13 +46,13 @@ public static String
literalMapToHintString(Map<Pair<Integer, Integer>, RexExpre
e.getValue().getDataType().name(), e.getValue().getValue()));
}
// semi-colon is used to separate between encoded literals
- return "{" + StringUtils.join(literalStrings, ";") + "}";
+ return "{" + StringUtils.join(literalStrings, ";:;") + "}";
Review Comment:
the problem is b/c in some agg literals it allows stringify parameter type
with `;` as the separator. this conflicts with my usage of `;` which indicates
the "next literal hint".
Thus i used another 3-character splitter `;:;` to indicate hint-literal
boundaries.
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