wittyameta opened a new pull request #6732: [FLINK-10310] Cassandra Sink - Handling failing requests. URL: https://github.com/apache/flink/pull/6732 ## What is the purpose of the change This pull request provides support to optionally handle cassandra sink errors. A user may choose to ignore an exception instead of allowing the sink to fail. The handler is similar to `ActionRequestFailureHandler` in Elastic Sink. ## Brief change log - *Added interface `CassandraFailureHandler` and a no-op implementation `NoOpCassandraFailureHandler`* - *`CassandraSinkBase` has a new field `failureHandler` and updated constructor* - *`checkAsyncErrors` method in `CassandraSinkBase` calls the `failureHandler` instead of throwing an `IOException`* - *`CassandraSinkBuilder` has a new optional field `failureHandler` and updated setter. Uses no-op implementation as default* ## Verifying this change This change added tests and can be verified as follows: - *Added test in class `CassandraSinkBaseTest` that validates that failureHandler is called and the error is ignored* ## 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)`: **yes** - 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: **no** - The S3 file system connector: **no** ## Documentation - Does this pull request introduce a new feature? **yes** - If yes, how is the feature documented? **docs**
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