93a9cec406
Cache the iceberg table. When accessing the same table, the metadata will only be loaded once. Cache the snapshot of the table to optimize the performance of the iceberg table function. Add cache support for iceberg's manifest file content a simple test from 2.0s to 0.8s before mysql> refresh table tb3; Query OK, 0 rows affected (0.03 sec) mysql> select * from tb3; +------+------+------+ | id | par | data | +------+------+------+ | 1 | a | a | | 2 | a | b | | 3 | a | c | .... | 68 | a | a | | 69 | a | b | | 70 | a | c | +------+------+------+ 70 rows in set (2.10 sec) mysql> select * from tb3; +------+------+------+ | id | par | data | +------+------+------+ | 1 | a | a | | 2 | a | b | | 3 | a | c | ... | 68 | a | a | | 69 | a | b | | 70 | a | c | +------+------+------+ 70 rows in set (2.00 sec) after mysql> refresh table tb3; Query OK, 0 rows affected (0.03 sec) mysql> select * from tb3; +------+------+------+ | id | par | data | +------+------+------+ | 1 | a | a | | 2 | a | b | ... | 68 | a | a | | 69 | a | b | | 70 | a | c | +------+------+------+ 70 rows in set (2.05 sec) mysql> select * from tb3; +------+------+------+ | id | par | data | +------+------+------+ | 1 | a | a | | 2 | a | b | | 3 | a | c | ... | 68 | a | a | | 69 | a | b | | 70 | a | c | +------+------+------+ 70 rows in set (0.80 sec)
# Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. # fe-common This module is used to store some common classes of other modules. # spark-dpp This module is Spark DPP program, used for Spark Load function. Depends: fe-common # fe-core This module is the main process module of FE. Depends: fe-common, spark-dpp