yiguolei commented on code in PR #9243:
URL: https://github.com/apache/incubator-doris/pull/9243#discussion_r859262594
##########
gensrc/thrift/PaloInternalService.thrift:
##########
@@ -274,8 +274,18 @@ struct TTxnParams {
10: optional double max_filter_ratio
}
-// ExecPlanFragment
+// Definition of global dict, global dict is used to accelerate query
performance of low cardinality data
+struct TColumnDict {
+ 1: optional Types.TPrimitiveType type
+ 2: list<string> str_dict // map one string to a integer, using offset as id
+}
+struct TGlobalDict {
+ 1: optional map<i32, TColumnDict> dicts, // map dict_id to column dict
Review Comment:
Maybe need. Some times I find there are sql queries that have more than 10k
lines, I am afraid there are many dicts. And the slot id has int32 type.
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