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https://issues.apache.org/jira/browse/CALCITE-3073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16857838#comment-16857838
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Matt Wang commented on CALCITE-3073:
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[~zhztheplayer] I have updated the JIRA title, now the PR just support to
consume form the special timestamp.
Now we can set the start timestamp in `modern.json` file, then we can read from
the special timestamp. I do not know it's necessary to support the end
timestamp, because the data in Kafka is a streaming data and it is producing
all the time.
But like [~mingmxu] suggested, if we add a special reserved
keyword(`KAFKA_TIMESTAMP`) in KafkaAdapter, we can query like `SELECT * FROM
KAFKA_TABLE WHERE KAFKA_TIMESTAMP > CURRENT_TIMESTAMP-1`, it will make easy to
use, but I'm not sure is a good idea.
> Support to consume from timestamp in KafkaAdapter
> -------------------------------------------------
>
> Key: CALCITE-3073
> URL: https://issues.apache.org/jira/browse/CALCITE-3073
> Project: Calcite
> Issue Type: Improvement
> Components: kafka-adapter
> Reporter: Xu Mingmin
> Assignee: Matt Wang
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> Currently the KafkaAdapter consumes data from default
> offset(latest/earliest/last_offset) and runs forever. With support of from/to
> timestamp/offset, it's more flexible for users to query a specific range.
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