John Spray 18e9208158 pageserver: improved error handling for shard routing error, timeline not found (#6262) ...

## Problem

- When a client requests a key that isn't found in any shard on the node
(edge case that only happens if a compute's config is out of date), we
should prompt them to reconnect (as this includes a backoff), since they
will not be able to complete the request until they eventually get a
correct pageserver connection string.
- QueryError::Other is used excessively: this contains a type-ambiguous
anyhow::Error and is logged very verbosely (including backtrace).

## Summary of changes

- Introduce PageStreamError to replace use of anyhow::Error in request
handlers for getpage, etc.
- Introduce Reconnect and NotFound variants to QueryError
- Map the "shard routing error" case to PageStreamError::Reconnect ->
QueryError::Reconnect
- Update type conversions for LSN timeouts and tenant/timeline not found
errors to use PageStreamError::NotFound->QueryError::NotFound

2024-01-04 10:40:03 +00:00

..

src

pageserver: improved error handling for shard routing error, timeline not found (#6262)

2024-01-04 10:40:03 +00:00

tests

Make postgres_backend use generic IO type (#3789)

2023-03-13 12:18:10 +03:00

Cargo.toml

Remove sync postgres_backend, tidy up its split usage.

2023-03-09 20:45:56 +03:00