Intermittent 404s returned by SAS API /pcstacitems/items endpoint

[bmcandr]

I'm seeing intermittent 404s returned by https://planetarycomputer.microsoft.com/api/sas/v1/token/pcstacitems/items. This occurs with the following usage pattern:

import pystac_client
import planetary_computer

client = pystac_client.Client.open(
    "https://planetarycomputer.microsoft.com/api/stac/v1",
    modifier=planetary_computer.sign_inplace,
)

collection = client.get_collection("sentinel-2-l2a")

# HTTPError: 404 Client Error: Not Found for url: https://planetarycomputer.microsoft.com/api/sas/v1/token/pcstacitems/items

The sign_inplace modifier attempts to sign the "geoparquet-items" Asset on the Collection which is defined with the following table storage options:

"table:storage_options": {
    "account_name": "pcstacitems"
}

[ghidalgo3]

Are you still experiencing this issue? We performed maintenance on the platform on Friday and that may explain the request errors.

[bmcandr]

We've experienced this intermittently for some time so maybe related to maintenance, but maybe not? I'll try to put together a reproducible example.

[ghidalgo3]

More likely than not, you were probably getting throttled by our SAS service. If this issue persists for you, can you provide more details around the number of processes you are running to request SAS tokens, and whether you are requesting them from a machine in the Azure West Europe region?

[bmcandr]

All SAS token requests are originating from Azure Batch tasks running in the west-europe region and include an API key. A 429 status code would be more informative and allow the retry support in the planetary_computer signing function to kick in (404 is not included in the status codes that trigger a retry).