2d90f4b87c
This pull request includes some implementations of the statistics(https://github.com/apache/incubator-doris/issues/6370), it will not affect any existing code and users will not be able to create statistics job. Now only MetaStatisticsTask that directly collects statistics by reading FE meta is implemented. SQLStatisticsTask is still being implemented, it needs to query BE through FE. The following is the function implemented by this pr: 1. Support statistics collection for partitioned and non-partitioned tables. For partitioned tables, the collection of statistics for the specified partition is implemented. 2. When the task is divided, it is divided according to the partition table and the non-partition table. The most fine-grained is to the tablet level. A matetask collects as many statistics as possible. 3. Add partition statistics (Table -> Partition -> Column). For example, the size of the table, the number of rows, the size of the partition, the number of rows, the maximum and minimum values of the columns, etc. 4. Display and modify partition-level statistics. …
# 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