[jira] [Created] (FLINK-30294) Change table property key 'log.scan' to 'startup.mode' and add a default startup mode in Table Store

["Caizhi Weng (Jira)" <ji...@apache.org>]

Caizhi Weng created FLINK-30294:
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             Summary: Change table property key 'log.scan' to 'startup.mode' and add a default startup mode in Table Store
                 Key: FLINK-30294
                 URL: https://issues.apache.org/jira/browse/FLINK-30294
             Project: Flink
          Issue Type: Improvement
          Components: Table Store
    Affects Versions: table-store-0.3.0
            Reporter: Caizhi Weng
            Assignee: Caizhi Weng


We're introducing time-travel reading of Table Store for batch jobs. However this reading mode is quite similar to the "from-timestamp" startup mode for streaming jobs, just that "from-timestamp" streaming jobs only consume incremental data but not history data.

We can support startup mode for both batch and streaming jobs. For batch jobs, "from-timestamp" startup mode will produce all records from the last snapshot before the specified timestamp. For streaming jobs the behavior doesn't change.

Previously, in order to use "from-timestamp" startup mode, users will have to specify "log.scan" and also "log.scan.timestamp-millis", which is a little inconvenient. We can introduce a "default" startup mode and its behavior will base on the execution environment and other configurations. In this way, to use "from-timestamp" startup mode, it is enough for users to specify just "startup.timestamp-millis".



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