Version 0.8.0.0

• Feature #12: Add support for Elasticsearch 6.6.2
• Bug fix #9: Fix issue for query by index pattern in JDBC driver.
• Bug fix #10: Return friendly error message instead of NPE for illegal query and other exception cases.

Version 0.7.0.0

Notable Changes

In this release, the following features are added with many other minor improvements and bug fixes.

• SQL HAVING:
  • Add support for SQL HAVING to filter aggregated result after GROUP BY.
• SQL Functions:
  • Common math functions as well as date function are available.
• Nested Field Query:
  • Query nested field in SQL++ syntax instead of explicit nested() function.
• JSON in RESTful Request:
  • Support JSON payload to allow for ESRally benchmark and parameters in JDBC request. And also pretty format and flatten native Elasticsearch DSL as response.
• Block Hash Join:
  • Introduced new query planning framework and new hash join algorithm with memory protection mechanism to perform hash join block by block safely.

Major Refactoring & Architecture Changes

• Avoid I/O Operation in NIO Thread
  • Move I/O blocking operations to custom worker thread pool or prefetch to avoid blocking. Meanwhile non-blocking operations still run in Elasticsearch transport thread for efficiency.