[FLINK-13397] Remove RollingSink

[aljoscha]

What is the purpose of the change

This has been superseded by the BucketingSink and has been deprecated for some releases now.

Brief change log

• Remove RollingSink and associated classes
• Update figure in documentation

Verifying this change

• Nothing to verify, this only removes code

[kl0u]

I will have a look @aljoscha

[flinkbot]

Thanks a lot for your contribution to the Apache Flink project. I'm the @flinkbot. I help the community
to review your pull request. We will use this comment to track the progress of the review.

Automated Checks

Last check on commit 76b9f95 (Tue Aug 06 15:50:39 UTC 2019)

✅no warnings

_{Mention the bot in a comment to re-run the automated checks.}

Review Progress

• ❓ 1. The [description] looks good.
• ❓ 2. There is [consensus] that the contribution should go into to Flink.
• ❓ 3. Needs [attention] from.
• ❓ 4. The change fits into the overall [architecture].
• ❓ 5. Overall code [quality] is good.

Please see the Pull Request Review Guide for a full explanation of the review process.

Details

The Bot is tracking the review progress through labels. Labels are applied according to the order of the review items. For consensus, approval by a Flink committer of PMC member is required

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot approve description to approve one or more aspects (aspects: description, consensus, architecture and quality)
• @flinkbot approve all to approve all aspects
• @flinkbot approve-until architecture to approve everything until architecture
• @flinkbot attention @username1 [@username2 ..] to require somebody's attention
• @flinkbot disapprove architecture to remove an approval you gave earlier

[flinkbot]

CI report:

• 408e5ac : SUCCESS Build
• 76b9f95 : SUCCESS Build

[kl0u]

Thanks for the work @aljoscha.

There are places where the "rolling sink" has not been removed, like the guarantees.md and the sidebar in the documentation, under the tab connectors.

[aljoscha]

Thanks for the review! I pushed the required changes. PTAL.

[kl0u]

Thanks for the work @aljoscha !
+1 to merge

[aljoscha]

Thanks for the review! I merged