[GitHub] [arrow] wgtmac commented on issue #34053: [C++][Parquet] Write parquet page index

["wgtmac (via GitHub)" <gi...@apache.org>]

wgtmac commented on issue #34053:
URL: https://github.com/apache/arrow/issues/34053#issuecomment-1423763383

   Page index is a pretty new concept in the history of parquet specs. In the old days when page index is unavailable, the I/O unit is always column chunk because we can only drop row groups based on the column statistics. Once page index is supported, finer-grained I/O unit is a must if we want to leverage page index to efficiently skip specific pages. @XinyuZeng 


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