dantengsky

yes - enable table cache bloom filter index will be cached (by col) if table cache is enabled but apparently, it only works after warming up - allow more concurrency...

got it , thanks!

@doki23 @BohuTANG I am doing some POC works now, hopefully PR will be opened soon... :)

vanilla bloom filter is replaced by xor filter in PR #7870

internal parquet2 patches are not totally abandoned yet ( for data format backward compatibility). after all the old data has been migrated, we should switch to the upstream parquet2,

> cc @dantengsky, can we migrate `parquet2` to upstream instead of our own fork? There is only one thing that prevents us from using the vanilla upstream parquet2: there might...

replaced by https://github.com/datafuselabs/databend/pull/15221

> @dantengsky Most work on this tracking issue has been implemented. How about closing it and start a new one if needed? let close it :)

what is the "semantic" of query: `SELECT ... FROM [ AT ( { SNAPSHOT => | TIMESTAMP => } ) ] [ SINCE ( { SNAPSHOT => | TIMESTAMP =>...

replaced by https://github.com/datafuselabs/databend/pull/15221