pitrou commented on issue #37630: URL: https://github.com/apache/arrow/issues/37630#issuecomment-2607468363
I've submitted a [draft PR](https://github.com/apache/arrow/pull/45330) that adds a `cache_metadata` option when scanning. Here are some memory consumption measurements on a synthetic dataset similar to the one in #45287: * with `cache_metadata=True` (the default): ```console $ /usr/bin/time -f "\n%E real\n%U user\n%S sys\n%M kB peak RSS" python -c 'import pyarrow.dataset as pd; pd.dataset("/home/antoine/arrow/data/bamboo-streaming-parquet-test-data/1000col-dataset/").to_table()' 0:11.01 real 107.66 user 4.37 sys 2069284 kB peak RSS ``` * with `cache_metadata=False`: ```console $ /usr/bin/time -f "\n%E real\n%U user\n%S sys\n%M kB peak RSS" python -c 'import pyarrow.dataset as pd; pd.dataset("/home/antoine/arrow/data/bamboo-streaming-parquet-test-data/1000col-dataset/").to_table(cache_metadata=False)' 0:10.97 real 109.11 user 3.87 sys 1381696 kB peak RSS ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
