Extend config of RecordTimestampExtractor with date-time format pattern

[gadomsky]

Problem

Partitioning by String field is possible only if this field contains data in only one specific format. There is no easy way to override RecordFieldTimestampExtractor with custom datetime formatter.

Solution

This PR introduceses new configuration field with format pattern.
Default value of this new configuration is empty String, cause there is no coressponding pattern to DatetimeFormatter beeing used currently - it is only possible to set this programmticaly.

Does this solution apply anywhere else?

• yes
• no

If yes, where?

Test Strategy

Testing done:

• Unit tests
• Integration tests
• System tests
• Manual tests

Release Plan

[OneCricketeer]

You should be able to use an SMT to convert the timestamp before it even reaches the partitioner