THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
Definition
Type that determines how a def~commit will be stored and handled relative to its application to the target def~dataset.
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Trade-off | def~copy-on-write | def~merge-on-read |
---|---|---|
Data Latency | Higher | Lower |
Update cost (I/O) | Higher (rewrite entire def~dataset parquet) | Lower (append to `delta log`) |
Parquet File Size | Smaller (high update(I/0) cost) | Larger (low update cost) |
Write Amplification | Higher | Lower (depending on compaction strategy to the def~dataset parquet) |