MariaDB Connector/J 2.0.0 Release Notes
The most recent Stable (GA) release of MariaDB Connector/J is:MariaDB Connector/J 3.5.3
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Release date: 20 April 2017
MariaDB Connector/J 2.0.0-RC is a RC (Release candidate) release.
For an overview of MariaDB Connector/J see theAbout MariaDB Connector/J page
Notable Changes
Java 8 is now minimum required version.
Handle CLIENT_DEPRECATE_EOF flag
CONJ-318 Implement some protocol changes that permit to save some bytes. (part of MDEV-8931).
handle SERVER_SESSION_STATE_CHANGE status flag
CONJ-341 With server with version MariaDB 10.2, MySQL 5.7, ensure driver state :
driver does now always get current database, even when database is changed by query.
when using rewriteBatchedStatements does return correct autoincrement ids even when session variable @auto_increment_increment has change during session.
improve setQueryTimeout to use SET STATEMENT max_statement_time
CONJ-393 Previous implementation of query timeout handling (using Statement.setQueryTimeout) will create an additional thread with a scheduler. When timeout is reached, a temporary connection will be created to permit executing "KILL QUERY ", then closing the temporary connection. When query ended before timeout, the scheduled task will be canceled.
If server is > 10.1.2, query timeout will be handle server side using "SET MAX_STATEMENT_TIME FOR" command.
Real cancelling Streaming result sets
CONJ-315 When closing a Statement that was fetching a result-set (using Statement.setFetchSize) and all rows where not read at the time of closing, a kill query command will be executed on close, to avoid having to parse all remaining results.
Memory optimization : streaming query
CONJ-442 Very big command now doesn't use any intermediate buffer. Commands are send directly to socket avoiding using memory, This permit to send very large object (1G) without using any additional memory.
Faster connection
CONJ-366 Faster connection : bundle first commands in authentication packet Driver execute different command on connection. Those queries are now send using pipeline (all queries are send, then only all results are reads).
New Options :
usePipelineAuth
Performance improvement storing data in resultset
CONJ-368 Parsing row result optimisation to avoid creating byte array to the maximum for faster results and less memory use.
Remaining JDBC 4.2 missing implementation :
CONJ-409 - PrepareStatement.setObject(...) support for with java 8 temporal temporal object.
CONJ-411 - support for Statement maxFieldSize
Misc
CONJ-443 - NullpointerException when making concurrent procedure calls
CONJ-391 - Improve connection using SELECT in place of SHOW to avoid creating a mutex server side.
CONJ-402 - tcpKeepAlive option now default to true.
CONJ-448 - QueryException: Incorrect arguments to mysqld_stmt_execute on inserting an "emptyString"-Lob with JPA
CONJ-451 - Respect type parameter of ResultSet.getObject with type
CONJ-455 - MetaData : tinyInt1isBit doesn't work properly in TINYINT(1) column that is marked as UNSIGNED
CONJ-450 - NPE on setClientInfo if value is an empty string
CONJ-457 - trustStore : Retain leading slash when trust store beings with 'file:/'
CONJ-160 - ConnectionPool test using hikariCP
CONJ-307 - valid connector java 9 early access
CONJ-402 - make tcpKeepAlive option default to true
CONJ-411 - Implement Statement maxFieldSize
CONJ-449 - Permit CallableStatement streaming
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