vinothchandar commented on a change in pull request #4718: URL: https://github.com/apache/hudi/pull/4718#discussion_r824082787
########## File path: rfc/rfc-36/rfc-36.md ########## @@ -0,0 +1,605 @@ +<!-- + 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. +--> +# RFC-36: Hudi Metastore Server + +## Proposers + +- @minihippo + +## Approvers + + +## Status + +JIRA: [HUDI-3345](https://issues.apache.org/jira/browse/HUDI-3345) + +> Please keep the status updated in `rfc/README.md`. + +# Hudi Metastore Server + +## Abstract + +Currently, Hudi is widely used as a table format in the data warehouse. There is a lack of central metastore server to manage the metadata of data lake table. Hive metastore as a commonly used catalog service in the data warehouse on Hadoop cannot store the unique metadata like timeline of the hudi table. + +The proposal is to implement an unified metadata management system called hudi metastore server to store the metadata of the hudi table, and be compatible with hive metastore so that other engines can access it without any changes. + +## Backgroud + +**How Hudi metadata is stored** + +The metadata of hudi are table location, configuration and schema, timeline generated by instants, metadata of each commit / instant, which records files created / updated, new records num and so on in this commit. Besides, the information of files in a hudi table is also a part of hudi metadata. Review comment: Yes. To be precise, I would like to see if the metastore can serve FILES and COL_STATS partitions of the metadata table. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
