Multiple snapshots taken within just a few seconds

Support
1

I have encountered a strange issue when investigating unexpectedly high “Class C” transactions with B2, essentially it seems like two snapshots are being triggered in quick succession.

image
image1301×693 37.1 KB

Taking the top two we see unique snapshot IDs

...
21:00:00.398 keeping 2022-03-12 20:59:59.9563273 +0000 UTC retention: [latest-1,hourly-1,daily-1,weekly-1,monthly-1,annual-1] pins: []
21:00:00.398 created snapshot 1b62a63293a20d2c2d8636f9c04ea36b

…and the most recent

...
21:00:10.083 keeping 2022-03-12 20:59:59.9563273 +0000 UTC retention: [latest-2,hourly-2] pins: []
21:00:10.083 keeping 2022-03-12 21:00:09.6710558 +0000 UTC retention: [latest-1,hourly-1,daily-1,weekly-1,monthly-1,annual-1] pins: []
21:00:10.083 created snapshot 6d5e329247f91ef0a5a6c6395e8db7e1

The policy could not be much simpler.

{
    "retention": {},
    "files": {},
    "errorHandling": {},
    "scheduling": {
        "intervalSeconds": 3600
    },
    "compression": {},
    "actions": {},
    "logging": {
        "directories": {},
        "entries": {}
    }
}
2

Curious as to whether anyone else experiences this phenomenon?

I have upgraded to v0.10.7 but the issue persists.

3

Yes, I’ve just posted (waiting in moderation) about the same issue, with v0.10.7. I didn’t see your post until just now. For both of us, the first snapshot is starting a fraction of a second before the hour, and then a second is being triggered on the hour.

4

Right, definitely looks like a scheduler glitch.