21739445944
84%

Ran 06 Feb 2026 06:12AM UTC

Jobs 1

Files 61

Run time 1min

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Committed 05 Feb 2026 04:15PM UTC coverage: 84.633% (-0.2%) from 84.791%

Build # 21739445944

Build Type

push

github

Committed by

web-flow

Commit Message

(2.14?) NRG: WAL must align with snapshot (#7620)

The Raft log can have three states:
- no snapshot, and an empty WAL
- no snapshot, and a WAL that starts from the very first entry with N
entries
- a snapshot, and the WAL continues onward from the snapshot with N
entries

We previously were not checking that these align, this would allow for
the snapshot to be non-existent but the WAL to be way ahead or there to
be a gap (somehow) between the snapshot and WAL itself. Both could lead
to data loss.
Normally this shouldn't be an issue though, as these will always align.
But, could potentially happen if a snapshot and the tail of the WAL were
durably written, but somehow the head of the WAL was not.

Signed-off-by: Maurice van Veen <github@mauricevanveen.com>

Run Details

74540 of 88074 relevant lines covered (84.63%)

344585.42 hits per line

Uncovered Existing Lines

Lines	Coverage	∆	File
2	90.96	-0.19%	src/github.com/nats-io/nats-server/server/parser.go
2	90.25	0.15%	src/github.com/nats-io/nats-server/server/server.go
3	86.91	-0.09%	src/github.com/nats-io/nats-server/server/accounts.go
3	86.35	0.09%	src/github.com/nats-io/nats-server/server/events.go
3	86.18	-1.38%	src/github.com/nats-io/nats-server/server/util.go
5	83.82	-0.14%	src/github.com/nats-io/nats-server/server/jetstream.go
6	87.02	-0.18%	src/github.com/nats-io/nats-server/server/monitor.go
7	89.71	-0.39%	src/github.com/nats-io/nats-server/server/reload.go
18	91.99	-0.64%	src/github.com/nats-io/nats-server/server/route.go
27	84.21	-0.86%	src/github.com/nats-io/nats-server/server/scheduler.go
131	83.38	0.31%	src/github.com/nats-io/nats-server/server/memstore.go
165	73.69	-0.38%	src/github.com/nats-io/nats-server/server/jetstream_api.go
279	88.32	-0.37%	src/github.com/nats-io/nats-server/server/consumer.go
338	87.36	-0.15%	src/github.com/nats-io/nats-server/server/raft.go
411	86.04	-0.15%	src/github.com/nats-io/nats-server/server/stream.go
528	55.18	0.05%	src/github.com/nats-io/nats-server/server/jetstream_errors_generated.go
623	82.64	-0.59%	src/github.com/nats-io/nats-server/server/filestore.go
1215	82.39	-0.12%	src/github.com/nats-io/nats-server/server/jetstream_cluster.go

Jobs

ID	Job ID	Ran	Files	Coverage
1	21739445944.1	06 Feb 2026 06:12AM UTC	61	84.63	GitHub Action Run

nats-io / nats-server / 21739445944
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