4158253799
Support hudi time travel in external table: ``` select * from hudi_table for time as of '20230712221248'; ``` PR(https://github.com/apache/doris/pull/15418) supports to take timestamp or version as the snapshot ID in iceberg, but hudi only has timestamp as the snapshot ID. Therefore, when querying hudi table with `for version as of`, error will be thrown like: ``` ERROR 1105 (HY000): errCode = 2, detailMessage = Hudi table only supports timestamp as snapshot ID ``` The supported formats of timestamp in hudi are: 'yyyy-MM-dd HH:mm:ss[.SSS]' or 'yyyy-MM-dd' or 'yyyyMMddHHmmss[SSS]', which is consistent with the [time-travel-query.](https://hudi.apache.org/docs/quick-start-guide#time-travel-query) ## Partitioning Strategies Before this PR, hudi's partitions need to be synchronized to hive through [hive-sync-tool](https://hudi.apache.org/docs/syncing_metastore/#hive-sync-tool), or by setting very complex synchronization parameters in [spark conf](https://hudi.apache.org/docs/syncing_metastore/#sync-template). These processes are exceptionally complex and unnecessary, unless you want to query hudi data through hive. In addition, partitions are changed in time travel. We cannot guarantee the correctness of time travel through partition synchronization. So this PR directly obtain partitions by reading hudi meta information. Caching and updating table partition information through hudi instant timestamp, and reusing Doris' partition pruning.
# 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