v.0.11.1

This is a bug fix release.

v.0.11.0

Feature highlights:

• Improvements over HerdDB Collections Framework
• Improvement over automatic handling of retries during Leader failover

v0.9.1

This is an hotfix release over 0.9.0, that adds a system property to force recovery from corrupted transaction logs.
The real fix will be released on 0.11.0

v0.10.1

This is an hotfix release over 0.10.1 that fixes a bug in client side query text cache

v0.10.0

Highlitghs:

• Upgrade of BookKeeper and ZookKeeper
• Use Long-poll reads BookKeeper in order to save resources on followers
• new CLI tools to repair cluster in case of lost servers
• new HerdDB Collections Framework

v0.9.0

Highlights:

• Initial support for "NOT NULL" columns (on CREATE TABLE) (contributed by @amitvc)
• General refactor and improvement on checkpoints, expecially in case of systems with very low memory
• Improvements on BLink
• Upgrade to Apache BookKeeper 4.9.0

v0.8.1

Fixes an important regression on 0.8.0 on multi-row DELETEs and UPDATEs

v0.8.0

Highlights:

• New v3 Wire protocol
• Totally rewritten the server side RPC execution pipeline, now it is fully async in respect to writes to the WAL
• Support (Experimental) for O_DIRECT writes
• New JDBC "async" DML operations (a custom extension of JDBC)
• Super fast import from MySQL (using async JDBC extensions)
• Upgrade to Apache Bookkeeper 4.8.1

HerdDB v0.7.1

News and noteworthy:

• FlatBuffers based wire protocol
• Improvements on BLink
• Leverage Hotspots intrinsics when working on JDK9+

HerdDB v0.6.0

Highlights:

• improvements on BRIN indexes
• improvements on network wire protocol
• improvement to usage of memory during comparisons (no in memory copies whenever possible)
• improvements on BookKeeper Commit Log
• enhanced support for JDBC Metadata (indexes)
• improvements in MySQL import tools
• fixed an important memory leak due to a bug in ConcurrentSkipListMap
• new system tables to track the status of replication and to have informations about indexes
• bug fixes
• upgrade di Apache Calcite 1.17

Notes for the upgrade:

• automatically index metadata for PKs (BLink) will be recomputed
• BRIN Index format changed on disk, upgrade will be automatic
• network protocol changed, you have to upgrade clients, the new protocol is not 100% compatible with the old one (there is still no support for wire protocol versioning, contributions will be really welcome!)