bithw1 opened a new issue, #11999:
URL: https://github.com/apache/hudi/issues/11999

   
   In the official 
guide(https://hudi.apache.org/cn/docs/concepts/#query-types,) about snapshot 
query, it says `COW provides a drop-in replacement for existing parquet 
tables`,  what `drop-in replacement` means here, I can't get what it is talking 
about, replace what?
   
   
   ```
   Snapshot Queries : Queries see the latest snapshot of the table as of a 
given commit or compaction action. In case of merge on read table, it exposes 
near-real time data(few mins) by merging the base and delta files of the latest 
file slice on-the-fly. For copy on write table, it provides a drop-in 
replacement for existing parquet tables, while providing upsert/delete and 
other write side features.
   
   ```
   


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