presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/cache/CachingHiveMetastore.java/CachingHiveMetastore/getPartition
class CachingHiveMetastore:    @Override
    public Optional<Partition> getPartition(HiveIdentity identity, String databaseName, String tableName, List<String> partitionValues)
    {
        return get(partitionCache, new WithIdentity<>(updateIdentity(identity), hivePartitionName(databaseName, tableName, partitionValues)));
    }