[Proposal] Allow ingesting timestamp from Kafka's Metadata envelope.

[Igosuki]

Kafka wraps messages in an envelope that contains the offset and the timestamp. Currently, it's not possible to use these timestamps in druid's parseSpec.

This update requires finding a way to append or wrap values sent to parsers with the timestamp, since it's basically not included in the message byte array.

[stale]

This issue has been marked as stale due to 280 days of inactivity. It will be closed in 4 weeks if no further activity occurs. If this issue is still relevant, please simply write any comment. Even if closed, you can still revive the issue at any time or discuss it on the dev@druid.apache.org list. Thank you for your contributions.

[stale]

This issue has been closed due to lack of activity. If you think that is incorrect, or the issue requires additional review, you can revive the issue at any time.

[nttoan26]

i think this feature is a must, many datasources dont send timestamp data

[Igosuki]

Too bad it's been marked as stale, guess the need is too niche

[jihoonson]

The stale bot is not just to close old issues, but remind us them 🙂 I reopened this issue.

[gianm]

Added in #11630.