I have created a parquet file using CTAS from a MS SQL Server. The query on
parquet is getting stuck in STARTING state for a long time before returning
the results.

We could see that drill was trying to connect to the MS SQL server from
which the data was imported. The MSSQL server was down, drill threw an
exception "Failure while attempting to load JDBC schema", and then returned
the results. While SQL server is running, the query executes without
issues.

Why is drill querying the DB metadata externally and not the imported
parquets?

Rahul.

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