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5ceabcbcc5
When partition_split_builder splits a tablet metadata partition into
multiple mutations, the first mutation gets the partition tombstone
and/or static row while subsequent mutations contain only clustered
rows. The hint logic would correctly clear tokens (marking a full
partition read) upon seeing the tombstone in the first mutation, but
then re-add tokens when processing the subsequent row-only mutations.
This caused update_tablet_metadata to attempt a point update via
mutate_tablet_map_async on a tablet map that doesn't exist yet during
bootstrap, throwing no_such_tablet_map and failing the snapshot transfer.
Fix by adding a full_read flag to table_hint. Once a full partition read
is decided (due to partition tombstone, range tombstone, static row, or
row deletion), the flag prevents subsequent mutations for the same table
from re-adding tokens. Additionally, fall back to a full partition read
when the tablet map is missing locally, which happens when the joining
node receives tablet metadata for a table it has never seen before.
Fixes: https://scylladb.atlassian.net/browse/SCYLLADB-2303.
Needs backports to 2026.1+. 2026.1 introduces the regression with b17a36c071
Closes scylladb/scylladb#30115
* github.com:scylladb/scylladb:
tablets: fall back to full partition read when tablet map is missing
tablets: fix hint re-adding tokens after full partition read decision