public MongoDBSourceConfigFactory splitMetaGroupSize(int splitMetaGroupSize) {
        this.splitMetaGroupSize = splitMetaGroupSize;
        return this;
    }
The group size of split meta, if the meta size exceeds the group size, the meta will be
divided into multiple groups.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mongodb-cdc/src/main/java/org/apache/inlong/sort/cdc/mongodb/source/config/MongoDBSourceConfigFactory.java