Krisztian Kasa created HIVE-23130:
-------------------------------------
Summary: User friendly error message when MV rewriting fails
Key: HIVE-23130
URL: https://issues.apache.org/jira/browse/HIVE-23130
Project: Hive
Issue Type: Task
Components: CBO
Reporter: Krisztian Kasa
Assignee: Krisztian Kasa
If materialized view rewriting fails because an unsupported SQL clause or
operator is used we got an error message like this:
{code}
FAILED: SemanticException Cannot enable automatic rewriting for materialized
view. Unsupported RelNode type HiveSortExchange encountered in the query plan
{code}
This refers to the *HiveSortExchange* operator. This is introduced to CBO plan
if the statement has *sort by* clause which may not clear for the user.
{code}
create materialized view cmv_mat_view as select a, b, c from cmv_basetable sort
by a;
{code}
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