joemoe commented on code in PR #19584: URL: https://github.com/apache/flink/pull/19584#discussion_r859416542
########## docs/content/release-notes/flink-1.15.md: ########## @@ -0,0 +1,379 @@ +--- +title: "Release Notes - Flink 1.15" +--- +<!-- +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. +--> + +# Release notes - Flink 1.15 + +These release notes discuss important aspects, such as configuration, behavior, +or dependencies, that changed between Flink 1.14 and Flink 1.15. Please read these +notes carefully if you are planning to upgrade your Flink version to 1.15. + +## Summary of changed dependency names + +There are three changes in Flink 1.15 that require updating dependency names when +upgrading from earlier versions: + +* The newly introduced module `flink-table-planner-loader` (FLINK-25128) could + replace the legacy `flink-table-planner_2.12`. As a consequence, `flink-table-uber` + has been split into `flink-table-api-java-uber`, `flink-table-planner(-loader), + and `table-runtime`. Besides, the artifactId of `flink-sql-client` has no Scala + suffix (_2.11 / _2.12) anymore, and Scala users need to explicitly add a + dependency to `flink-table-api-scala` or `flink-table-api-scala-bridge`. +* Due to the efforts of removing Scala dependency from `flink-table-runtime` + (FLINK-25114), the artifactId of `flink-table-runtime` has no Scala version + suffix (\_2.11 / \_2.12) any more. +* The FileSystem connector is no longer a part of the `flink-table-uber` module + and changed to an optional dedicated `flink-connector-files` module + (FLINK-24687). Besides, the artifactId of `flink-orc`, `flink-orc-nohive`, + `flink-parquet` has no Scala suffix (\_2.11 / \_2.12) anymore. + +## JDK Upgrade + +The support of Java 8 is now deprecated and will be removed in a future release +([FLINK-25247](https://issues.apache.org/jira/browse/FLINK-25247)). We recommend +all users to migrate to Java 11. + +The default Java version in the Flink docker images is now Java 11 +([FLINK-25251](https://issues.apache.org/jira/browse/FLINK-25251)). +There are images built with Java 8, tagged with “java8”. + +## DataStream API + +### [TypeSerializer version mismatch during eagerly restore (FLINK-24858)](https://issues.apache.org/jira/browse/FLINK-24858) + +This ticket resolves an issue that during state migration between Flink versions +the wrong serializer might have been picked. + +When upgrading from Flink 1.13.x please immediately choose 1.14.3 or higher and +skip 1.14.0, 1.14.1, 1.14.2 because all are affected and it might prevent your +job from starting. + +## Table API & SQL + +### [Make the legacy behavior disabled by default (FLINK-26551)](https://issues.apache.org/jira/browse/FLINK-26551) + +The legacy casting behavior has been disabled by default. This might have +implications on corner cases (string parsing, numeric overflows, to string +representation, varchar/binary precisions). Set +`table.exec.legacy-cast-behaviour=ENABLED` to restore the old behavior. + +### [Enforce CHAR/VARCHAR precision when outputting to a Sink (FLINK-24753)](https://issues.apache.org/jira/browse/FLINK-24753) + +`CHAR`/`VARCHAR` lengths are enforced (trimmed/padded) by default now before entering +the table sink. + +### [Support the new type inference in Scala Table API table functions (FLINK-26518)](https://issues.apache.org/jira/browse/FLINK-26518) + +Table functions that are called using Scala implicit conversions have been updated +to use the new type system and new type inference. Users are requested to update +their UDFs or use the deprecated `TableEnvironment.registerFunction` to restore +the old behavior temporarily by calling the function via name. + +### [Propagate executor config to TableConfig (FLINK-26421)](https://issues.apache.org/jira/browse/FLINK-26421) + +`flink-conf.yaml` and other configurations from outer layers (e.g. CLI) are now +propagated into `TableConfig`. Even though configuration set directly in `TableConfig` +has still precedence, this change can have side effects if table configuration +was accidentally set in other layers. + +### [Remove pre FLIP-84 methods (FLINK-26090)](https://issues.apache.org/jira/browse/FLINK-26090) + +The previously deprecated methods `TableEnvironment.execute`, `Table.insertInto`, +`TableEnvironment.fromTableSource`, `TableEnvironment.sqlUpdate`, and +`TableEnvironment.explain` have been removed. Please use the provided +alternatives introduced in +[FLIP-84](https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=134745878). Review Comment: changed the text, will also add some javadocs links. -- 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]
