THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Type that determines how a commit def~commit will be stored and handled relative to its application to the target dataset def~dataset.
#todo verify
Following table summarizes the trade-offs between these two storage types
| Trade-off | Copy On Write (COW) | def~copy-on-write | def~merge-on-readMerge On Read (MOR) |
|---|---|---|---|
| Data Latency | Higher | Lower | |
| Update cost (I/O) | Higher (rewrite entire dataset 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 dataset def~dataset parquet) |
Related concepts
- commitdef~commit
- Commit List
- Merge On Read (MOR)
- def~merge-on-read
- def~copy-on-write
- timeline instantCopy On Write (COW)