Joonas Koivunen ed9a114bde fix: find gc cutoff points without holding Tenant::gc_cs (#7585) ...

The current implementation of finding timeline gc cutoff Lsn(s) is done
while holding `Tenant::gc_cs`. In recent incidents long create branch
times were caused by holding the `Tenant::gc_cs` over extremely long
`Timeline::find_lsn_by_timestamp`. The fix is to find the GC cutoff
values before taking the `Tenant::gc_cs` lock. This change is safe to do
because the GC cutoff values and the branch points have no dependencies
on each other. In the case of `Timeline::find_gc_cutoff` taking a long
time with this change, we should no longer see `Tenant::gc_cs`
interfering with branch creation.

Additionally, the `Tenant::refresh_gc_info` is now tolerant of timeline
deletions (or any other failures to find the pitr_cutoff). This helps
with the synthetic size calculation being constantly completed instead
of having a break for a timely timeline deletion.

Fixes: #7560
Fixes: #7587

2024-05-03 14:57:26 +03:00

..

benches

add async walredo mode (disabled-by-default, opt-in via config) (#6548)

2024-04-15 22:14:42 +02:00

client

Remove tenant_id from TenantLocationConfigRequest (#7469)

2024-05-02 20:18:13 +02:00

compaction

pageserver: shard-aware keyspace partitioning (#6778)

2024-04-29 17:46:46 +00:00

ctl

pagectl draw-timeline-dir: include layer file name as an SVG comment (#7455)

2024-04-22 12:55:17 +00:00

pagebench

Server support for new pagestream protocol version (#7377)

2024-04-25 20:45:37 +03:00

src

fix: find gc cutoff points without holding Tenant::gc_cs (#7585)

2024-05-03 14:57:26 +03:00

test_data

Add walingest test (#5892)

2023-11-28 12:50:53 -05:00

Cargo.toml

feat(pageserver): add metadata key range and aux key encoding (#7401)

2024-04-23 15:16:04 +00:00