PROACTIVE QUERY MIGRATION TO PREVENT FAILURES

A method of processing a federated query includes receiving a first federated query from a first client and receiving a second federated query from a second client. The first federated query includes a first source query that is in accordance with a target data source's query model, and the second federated query includes a second source query. The method also includes sending the second source query to the target data source and determining whether the second source query has failed at the target data source. The method further includes in response to determining that the second source query has failed, migrating the second source query in accordance with the first source query.