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CRASHES WITH AUTO_INCREMENT COLUMN Description:- Creating a federated table with AUTO_INCREMENT column using LIKE clause results in a server crash. Analysis:- Creating a federated table with AUTO_INCREMENT column using LIKE clause results in a federated server crash due to the uninitialized connection structure(mysql). Also due to unassigned connection string for the remote server, at the time of preparation of "create_info" structure, the creation of any federated table using LIKE clause fails with an error, "ERROR 1 (HY000): server name: '' doesn't exist!". This bug is not only with AUTO_INCREMENT but in all creations of federated tables with LIKE clause. Fix :- In ha_federated::info(), "mysql->insert_id" assigned to "stats.auto_increment_value" only when there is an active connection. This fixes the crash issue. For creating the federated table with LIKE clause, connection string is assigned at the time of preparation of "create_info" structure. |
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