# Aurora MySQL database engine updates: 2016-01-11 (version 1.5) (Deprecated)
**Version:** 1.5
This update includes the following improvements:
## Improvements
+ Fixed a 10 second pause of write operations for idle instances during Aurora storage deployments.
+ Logical read-ahead now works when `innodb_file_per_table` is set to `No`. For more information on logical read-ahead, see [Aurora MySQL database engine updates: 2015-12-03 (version 1.4) (Deprecated)](AuroraMySQL.Updates.20151203.md).
+ Fixed issues with Aurora Replicas reconnecting with the primary instance. This improvement also fixes an issue when you specify a large value for the `quantity` parameter when testing Aurora Replica failures using fault-injection queries. For more information, see [ Testing an Aurora replica failure](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Managing.FaultInjectionQueries.html#AuroraMySQL.Managing.FaultInjectionQueries.ReplicaFailure) in the *Amazon Aurora User Guide*.
+ Improved monitoring of Aurora Replicas falling behind and restarting.
+ Fixed an issue that caused an Aurora Replica to lag, become deregistered, and then restart.
+ Fixed an issue when you run the `show innodb status` command during a deadlock.
+ Fixed an issue with failovers for larger instances during high write throughput.
## Integration of MySQL bug fixes
+ Addressed incomplete fix in MySQL full text search affecting tables where the database name begins with a digit. (Port Bug \$117607956)