presto-hive/src/main/java/io/prestosql/plugin/hive/orc/OrcReaderConfig.java/OrcReaderConfig/setMaxMergeDistance
class OrcReaderConfig:    @Config("hive.orc.max-merge-distance")
    public OrcReaderConfig setMaxMergeDistance(DataSize maxMergeDistance)
    {
        options = options.withMaxMergeDistance(maxMergeDistance);
        return this;
    }