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COPY TO parquet now supports a new option, called
file_size_bytes
, which lets you generate parquet files with target size =file_size_bytes
.When a parquet file exceeds the target size, it will be flushed and a new parquet file will be generated under a parent directory. (parent directory will be the path without the parquet extension)
e.g.
> ls -alh /tmp/test/ 1.4M data_0.parquet 1.4M data_1.parquet 1.4M data_2.parquet 1.4M data_3.parquet 114K data_4.parquet