ClickHouse/clickhouse-java v0.8.0 on GitHub

Highlights

We've updated ClickHouseDriver and ClickHouseDataSource to default to using the new (jdbc-v2) implementation of the JDBC driver. Setting clickhouse.jdbc.v1=true will revert this change.

jdbc-v2 - Removed support for Transaction Support. Early versions of the driver only simulated transaction support, which could have unexpected results.
jdbc-v2 - Removed support for Response Column Renaming. ResultSet was mutable - for efficiency sake they're now read-only
jdbc-v2 - Removed support for Multi-Statement SQL. Multi-statement support was only simulated, now it strictly follows 1:1
jdbc-v2 - Removed support for Named Parameters. Not part of the JDBC spec
jdbc-v2 - Removed support for Stream-based PreparedStatement. Early version of the driver allowed for non-jdbc usage of PreparedStatement - if you desire such options, we recommend looking at client-v2.

[client-v2, jdbc-v2] - Added support for Bearer token authentication like JWT. Now it is possible to specify encoded token while
creating a client and change while runtime using com.clickhouse.client.api.Client.updateBearerToken. (#1834, #1988)
[client-v2] - Exposed connection pool metrics through Micrometer. It allows to monitor internal connection pool for number of active and leased connections. (#1901)

[client-v2] - Fixed construction of User-Agent header. Prev. implementation uses class.getPackage().getImplementationVersion() what returns
incorrect title and version when library is shaded. New implementation uses build time information from resource files generated while build. (#2007)
[client-v2] - Fixed multiple issues with handling connectivity disruption. Socket timeout is unlimited by default. Added retry on timeout. Added more information to exception message.
Please read the issue for more details. (#1994)
[client-v2] - Client doesn't close provided executor anymore letting application close it instead. (#1956)
[client-v2] - Removed unnecessary initialization to make startup time shorter. (#2032)