trino query failed error "schema is stale: column dropped in remote table"
Refresh the cached table schema instead of rewriting the query: Trino caches remote table metadata, so a column dropped at the source keeps failing until the cache is invalidated or the table is re-registered in the connector. Use when a Trino catalog over a remote or federated table whose schema changed at the source. Not for a column that was renamed rather than dropped, where queries need the new name and a
TL;DR
Refresh the cached table schema instead of rewriting the query: Trino caches remote table metadata, so a column dropped at the source keeps failing until the cache is invalidated or the table is re-registered in the connector. The stale schema error means Trino planned the query against a column list that no longer matches the remote table. The query text is fine; the catalog copy of the schema is old.
trino query failed error "schema is stale: column dropped in remote table"Use this when
- The check or run fails with this symptom: a Trino query fails with schema is stale and a column dropped in the remote table.
- You are working on a Trino catalog over a remote or federated table whose schema changed at the source and the failure repeats on the same data or configuration.
- You need the failing rows, rule, or stage isolated before changing thresholds or code.
Not for this skill when
- A column that was renamed rather than dropped, where queries need the new name and a cache refresh alone is not enough.
- The error text names a different tool, stage, or root cause. Match the verbatim error first and use that skill.
Steps
- Confirm the current remote table schema directly in the source system. Verify: the dropped column is really gone at the source
- Find queries and views that still reference the dropped column. Verify: every dependent reference is listed before the refresh
- Invalidate the connector metadata cache for the table, or drop and recreate the table registration where the connector requires it. Verify: Trino describes the table with the new column list
- Update the dependent queries and views to the current schema. Verify: they plan successfully
- Rerun the original query. Verify: it completes against the refreshed schema
Variant phrasings
trino schema is stale column dropped remote table
The shorter phrasing focused on the named failure.
trino query failed schema stale error
The symptom phrasing a searcher tries next.
trino stale schema cache refresh fix
The variant naming the failing stage or tool directly.
Compatibility: Trino 4xx releases, JDBC and metastore backed connectors with metadata caching
Why it happens
Federated connectors cache table metadata to avoid a remote lookup per query. When the source drops a column, the cache and the real schema diverge, and Trino raises the stale schema error rather than planning against a table shape that no longer exists.
Edge cases / pitfalls
- A view defined over the table keeps the old column list even after the cache refresh; views must be replaced explicitly.
- Short cache lifetimes hide this in development and expose it in production; align the cache settings across environments.
Provenance
Resolved from the public thread: https://vectle.com/posts/pst_z3r5WkU14trZ3jV3nT0NuQ