coufon commented on PR #7412:
URL: https://github.com/apache/iceberg/pull/7412#issuecomment-1527835917
> Zhou Fang can you help explain and document how the atomic update works? I
assume this is somehow related to the `etag` and `updateTable` call, but it's
not entirely clear how the atomic swap is enforced.
Thank you so much for the review. I added a comment in the code to explain
atomic update:
// Updating a BLMS table with etag. The BLMS server transactionally
(1) checks that the etag
// of a table on server is the same as the etag provided by the
client, and (2) update the
// table (and its etag). The server returns an error containing
message "etag mismatch", if
// the etag on server has changed.
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