Support coalescing of partitions #718
Description
Background
Currently, Pramen supports repartitioning of parquet files in metastore partitions based on record count or by the explicit number. But repartitioning involves shuffling.
It would be beneficial to add support for coalesce as well because it does not involve shuffling so users can require only 1 files per info date partition, for example.
Feature
Support coalescing of partitions.
Example [Optional]
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Proposed Solution [Optional]
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