aleph schemas not that robust

[dollschasingmen]

Aleph in general has some issues once in a while getting the schema. Not sure exactly where the fault is, although it probably has to do with the query that gets the schemas fails sometimes -- this in turn probably has something to do with that schema information in redshift is a view.

The more recent issue is that errors like ERROR: Relation with OID 15170212 does not exist have gotten so bad that even numerous retries are often exhausted. As a result schemas often remain stale.

It might be time to rethink the schema query anew, take a completely different approach.