azagrebin opened a new pull request #9617: [FLINK-13963] Consolidate Hadoop file systems usage and Hadoop integration docs URL: https://github.com/apache/flink/pull/9617 ## What is the purpose of the change We have hadoop related docs in several places at the moment: - **dev/batch/connectors.md** (Hadoop FS implementations and setup) - **dev/batch/hadoop_compatibility.md** (not valid any more that Flink always has Hadoop types out of the box as we do not build and provide Flink with Hadoop by default) - **ops/filesystems/index.md** (plugins, Hadoop FS implementations and setup revisited) - **ops/deployment/hadoop.md** (Hadoop classpath) - **ops/config.md** (deprecated way to provide Hadoop configuration in Flink conf) We could consolidate all these pieces of docs into a consistent structure to help users to navigate through the docs to well-defined spots depending on which feature they are trying to use. The places in docs which should contain the information about Hadoop: - **dev/batch/hadoop_compatibility.md** (only Dataset API specific stuff about integration with Hadoop) - **ops/filesystems/index.md** (Flink FS plugins and Hadoop FS implementations) - **ops/deployment/hadoop.md** (Hadoop configuration and classpath) How to setup Hadoop itself should be only in ops/deployment/hadoop.md. All other places dealing with Hadoop/HDFS should contain only their related things and just reference it 'how to configure Hadoop'. Like all chapters about writing to file systems (batch connectors and streaming file sinks) should just reference file systems. ## Brief change log See previous section. ## Verifying this change Run ./docs/build_docs.sh -i and open http://localhost:4000 in browser to check the doc changes. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (no) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no) - The serializers: (no) - The runtime per-record code paths (performance sensitive): (no) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes) - The S3 file system connector: (yes) ## Documentation - Does this pull request introduce a new feature? (no) - If yes, how is the feature documented? (docs)
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