huaxingao commented on code in PR #18301: URL: https://github.com/apache/iceberg/pull/18301#discussion_r4456985160
########## format/spec.md: ########## @@ -1355,7 +1357,14 @@ Notes: ### Delete Formats -This section details how to encode row-level deletes in Iceberg delete files. Row-level deletes are added by v2 and are not supported in v1. Deletion vectors are added in v3 and are not supported in v2 or earlier. Position delete files must not be added to v3 tables, but existing position delete files are valid. Equality delete files must not be added to v4 tables, but existing equality delete files are valid. +This section details how to encode row-level deletes in Iceberg delete files. + +Row-level deletes have changed across Iceberg versions: + +* v4 allows writing only deletion vectors that are co-located with data file metadata Review Comment: Fixed order. ########## format/spec.md: ########## @@ -110,11 +110,13 @@ Inheriting the sequence number from manifest metadata allows writing a new manif Row-level deletes are stored in delete files. -There are two types of row-level deletes: +The current representation is [_deletion vectors_](#deletion-vectors) (v3 or above), which encode deleted positions of a single data file in a bitmap. Review Comment: Done -- 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]
