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https://issues.apache.org/jira/browse/FLINK-10310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16623422#comment-16623422
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ASF GitHub Bot commented on FLINK-10310:
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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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> Cassandra Sink - Handling failing requests
> ------------------------------------------
>
> Key: FLINK-10310
> URL: https://issues.apache.org/jira/browse/FLINK-10310
> Project: Flink
> Issue Type: Improvement
> Components: Cassandra Connector
> Reporter: Jayant Ameta
> Priority: Major
> Labels: pull-request-available
>
> The cassandra sink fails for any kind of error. For some exceptions (e.g
> WriteTimeoutException), ignoring the exception may be acceptable as well.
> Can we discuss having a FailureHandler on the lines ofÂ
> ActionRequestFailureHandler?
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/WriteTimeoutException-in-Cassandra-sink-kill-the-job-tp22706p22707.html
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