# Connector/J 2.4.0 Release Notes
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The most recent release of MariaDB Connector/J is:
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[Download](https://downloads.mariadb.com/Connectors/java/connector-java-2.4.0) | **Release Notes** | [Changelog](https://mariadb.com/docs/release-notes/connectors/java/changelogs/2.4/2.4.0) | [About MariaDB Connector/J](https://app.gitbook.com/s/CjGYMsT2MVP4nd3IyW2L/mariadb-connector-j/about-mariadb-connector-j)
**Release date:** 29 Jan 2019
MariaDB Connector/J 2.4.0 is a [***Stable***](https://mariadb.com/docs/release-notes/community-server/about/release-criteria) ***(GA)*** release.
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NOTE: MariaDB Connector/J 2.4.0 is fully compatible with the latest release of version 2.3. Further maintenance releases will not be provided for version 2.3.
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\[[CONJ-654](https://jira.mariadb.org/browse/CONJ-654)] change metadata behaviour: DatabaseMetaData.getDatabaseProductName() nows return "MariaDB"/"MySQL" according to server. This can cause some incompatibilities with some libraries and products that do not yet know Database Type "MariaDB"
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**For an overview of MariaDB Connector/J see the** [**About MariaDB Connector/J**](https://app.gitbook.com/s/CjGYMsT2MVP4nd3IyW2L/mariadb-connector-j/about-mariadb-connector-j) **page**
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### Evolutions
* [CONJ-675](https://jira.mariadb.org/browse/CONJ-675): permit multiple alternative authentication methods for the same user ([future MariaDB 10.4 feature](https://jira.mariadb.org/browse/MDEV-11340))
* [CONJ-678](https://jira.mariadb.org/browse/CONJ-678): permit indication of truststore/keystore type (JKS/PKCS12), then not relying on java default type
* [CONJ-378](https://jira.mariadb.org/browse/CONJ-378): GSSAPI: client can provide SPN
* [CONJ-667](https://jira.mariadb.org/browse/CONJ-667): Support MYSQL\_TYPE\_JSON datatype
* [CONJ-652](https://jira.mariadb.org/browse/CONJ-652): buffering available socket buffer for faster results (specifically for huge resultset)
* [CONJ-659](https://jira.mariadb.org/browse/CONJ-659): improve text performance parsing date/time/timestamp resultset
* [CONJ-670](https://jira.mariadb.org/browse/CONJ-670): ability to always refresh SSL certificate
### New options
| useReadAheadInput | keyStoreType | trustStoreType | servicePrincipalName |
| -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------- | -------------------- |
| useReadAheadInput | use a buffered inputSteam that read socket available data. Default: true | | |
| keyStoreType | indicate key store type (JKS/PKCS12). default is null, then using java default type. | | |
| trustStoreType | indicate trust store type (JKS/PKCS12). default is null, then using java default type | | |
| servicePrincipalName | when using GSSAPI authentication, SPN (Service Principal Name) use the server SPN information. When set, connector will use this value, ignoring server information | | |
### Bug fixes
* [CONJ-646](https://jira.mariadb.org/browse/CONJ-646): possible NullPointerException when connection lost to database using aurora configuration with one node
* [CONJ-672](https://jira.mariadb.org/browse/CONJ-672): batch using multi-send can hang when using query timeout
* [CONJ-544](https://jira.mariadb.org/browse/CONJ-544): disable SSL session resumption when using SSL
* [CONJ-589](https://jira.mariadb.org/browse/CONJ-589): correcting Clob.length() for utf8mb4
* [CONJ-649](https://jira.mariadb.org/browse/CONJ-649): datasource connectTimeout URL parameter is not honoured
* [CONJ-650](https://jira.mariadb.org/browse/CONJ-650): Correction on resultset.getObject(columnName, byte\[].class) when value is NULL
* [CONJ-665](https://jira.mariadb.org/browse/CONJ-665): old MySQL (<5.5.3) doesn't support utf8mb4, using utf8 on 3 bytes as connection charset by default
* [CONJ-671](https://jira.mariadb.org/browse/CONJ-671): MariaDb bulk threads occupy full cpu(99%) while db connections broken
* [CONJ-673](https://jira.mariadb.org/browse/CONJ-673): abording a connection while fetching a query still does read whole resultset
* [CONJ-669](https://jira.mariadb.org/browse/CONJ-669): SQLSyntaxErrorException when querying on empty column name
* [CONJ-674](https://jira.mariadb.org/browse/CONJ-674): make dumpQueriesOnException = false by default as per documentation
### Minor
* [CONJ-644](https://jira.mariadb.org/browse/CONJ-644): small optimization when validating galera connection
* [CONJ-625](https://jira.mariadb.org/browse/CONJ-625): add coverage test
* [CONJ-654](https://jira.mariadb.org/browse/CONJ-654): DatabaseMetaData.getDriverName() returns connector/J with a lowercase c, DatabaseMetaData.getDatabaseProductName() "MariaDB"/"MySQL" according to server
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