Motivation

Now many watermark-related features such as the watermark alignment have been implemented on the datastream API, and it is very convenient and flexible to configure and use these features through the datastream API. However, there is currently no way to use these features through SQL.

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the option 'watermark.alignment.update-interval' is not required. the default value is 1s.

All the options described above :

'watermark.emit.strategy'='ON_EVENT',
'watermark.emit.gap.on-event'='10000',
'watermark.idle-timeout'='1min',
'watermark.alignment.group'='alignment-group-1',
'watermark.alignment.max-drift'='1min',
'watermark.alignment.update-interval'='1s'

Of course, users can choose some of the items to configure according to their needs.

Migration Plan and Compatibility

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