Contact Us | Site Map
Firebird is used by approximately 1 million of software developers worldwide. High compatibility with industry standards on many fronts makes Firebird the obvious choice for developing interoperable applications for homogeneous and hybrid environments.
Developer's Report: Firebird Core Development & Coordination
March to July 2010

July 2010

New development
  • Reworked the SEC$USERS implementation so that no new physical table type and data access method would be required
  • Researched the known issues with the nested loop join algorithm being used for complex sub-queries (e.g. CORE-3013)
  • Continued work on the alternative (enhanced) textual plan output
Bug Fixing
  • CORE-3064: Using the procedure alias inside an explicit plan crashes the server
  • CORE-2122 (backport): Translation of large text BLOB between UNICODE_FSS (UTF8) and other charsets
  • Unregistered: Engine crash related to the incorrect internals of Pair<MetaName, MetaName>
Miscellaneous
  • Documentation for v2.5 RC3
June 2010

New development
  • Research on the denser ODS storage of longish monotonic strings
Bug Fixing
  • Unregistered (backport): Internal cache of prepared statements in the EXECUTE STATEMENT implementation doesn't work properly
  • Unregistered: Fixed a lock-up when connecting locally to the missing database file
  • Unregistered: Error in the BLR printer output
May 2010

New development
  • Reworked the rivers joining code in the optimizer
  • Better (more exact) calculation of a cardinality for external tables
Bug Fixing
  • CORE-3011: Server hangs or crashes while monitoring connections are repeatedly attaching and detaching
  • Fatal lock manager error "Invalid lock id (NNN)" while working with monitoring tables on a highly loaded system
  • CORE-2933: Very slow execution of a script that creates a lot of metadata
  • Unregistered: MON$MEMORY_USED for connection/database is bigger than MON$MEMORY_ALLOCATED
Miscellaneous
  • Backported a few optimizer adjustments from the recent versions into v2.1.4
  • Documentation for v2.5 RC3
April 2010

New development
  • Reworked the rsb/cursor logic (related to the differences between a main query and its subqueries)
  • Fixed evaluation of default arguments for PSQL and external functions. Improved error handling
  • First stage to make the codebase ready for messages longer than 64K
  • Changed the default page cache size for Classic, as discussed in fb-devel
Bug Fixing
  • CORE-3003: Procedure suspend check may cause restore to fail
  • CORE-2966: Wrong results or unexpected errors while sorting a large data set
  • CORE-2965: Incorrect ROW_COUNT value after SINGULAR condition
  • CORE-2215 (backport): GROUP BY concatenation with empty string
  • Unregistered: Avoid polluting firebird.log on Vista/Win7 systems when running as an application
  • Unregistered: Problems while detaching from the security database during the engine shutdown
Miscellaneous
  • A few corrections to the SQL states mapping
  • Cleanup the legacy SUPERCLIENT code, memory manager related cleanup
March 2010

New development
  • Cleanup the MSVC9 build process to benefit from the recent architectural changes
  • Reworked the remote protocol analyzing logic (it fixes some known issues and also starts to comply to the v3.0 architecture)
  • Reworked the root directory determination for client and embedded libraries
  • Refactored the sorter module into a proper C++ class, fixed its internal memory management
Bug Fixing
  • CORE-2916: Broken error handling in the case of a conversion error happened during index creation
  • CORE-2914: Server crashes while restoring a database having an expression index referencing a non-existent UDF
  • CORE-2890: SQLSTATE should also be available as a PSQL context variable like GDSCODE/SQLCODE
  • CORE-2289 (backport): Wrong (primary) constraint name is reported for the foreign key violation during FK creation
  • CORE-1550: Unnecessary index scan happens when the same index is mapped to both WHERE and ORDER BY clauses
Miscellaneous
  • Documentation for v2.0.6
  • Code cleanup (incomplete legacy scrollable cursors feature)
Dmitry Yemanov
Penza, Russia
Join Firebird!
RSS Newsletter
Home About Firebird Documentation Downloads Community Support Development Case Studies Back to Top
This site and the pages contained within are Copyright © 2000-2017, Firebird Project. Firebird® is a registered trademark of Firebird Foundation Incorporated. Developed by DQ Team.