ggershinsky commented on PR #453: URL: https://github.com/apache/parquet-format/pull/453#issuecomment-2370433522
> Just curious: > > 1. If multiple files being merged or something, would this being merged with same id, or should this being rewritten? Each encrypted parquet file has a unique [file id ](https://github.com/apache/parquet-format/blob/master/Encryption.md#52-crypto-structures) , used for signing every module of the file (to ensure they are not swapped, etc). Also, each file typically has a unique encryption key. Therefore, a merged file needs a new id, new row group ordinals, a new key; and re-encryption of each module with the new key / AAD. > 2. Is this only required when aad suffix? Row group ordinal is a part of the AAD suffix in most modules -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
