tree be03b439329d9367b5dcb95c9ea72bb00d824f2b
parent 89739e31401c581f88d5a8c41b7b7fac582e39ad
author Anivia Li <aniviali@google.com> 1711501572 +0000
committer CQ Bot <fuchsia-internal-scoped@luci-project-accounts.iam.gserviceaccount.com> 1711501572 +0000

[local aggregation] Migrate to FF64 in local aggregation

Soft migrate to FF64 in string histogram aggregation and at least once string aggregation.

Note that FF64 is hard migrated in at least once string aggregation for multi-days report observation generation, i.e. the aggregated data using legacy hash are dropped when generating observation for multi-days report.

Bug: 321745113
Tested: ./cobaltb.py test
Change-Id: I2ce81a2633ed4cb64ab470a5166398946f3fc40c
Reviewed-on: https://fuchsia-review.googlesource.com/c/cobalt/+/1014313
Commit-Queue: Anivia Li <aniviali@google.com>
Reviewed-by: Cameron Dale <camrdale@google.com>
Reviewed-by: Alex Pankhurst <pankhurst@google.com>