upscaledb 2.1.13 - Release Notes

upscaledb Embedded Storage is a database engine written in C/C++. It is fast, production-proven and easy to use.

This release fixes a few bugs. This is the last stable release before 2.2.0.

The most significant fixes are:

#47: fixed bad assert in ups_cursor_move; this caused crashes in debug mode
#66: return with error if a database is modified by a committed transaction which was not yet flushed to disk; this caused crashes when closing an Environment (ups_env_close)
#64: fixed segfault when recovering a database with a custom compare function; deprecated ups_db_set_compare_func, use ups_register_compare/UPS_PARAM_CUSTOM_COMPARE_NAME instead. Also, the .NET/C# delegate for custom compare functions has been changed, the delegate has to perform the marshalling now (see unittests for a sample)
issue #60: files are now truncated after a database was deleted with ups_env_erase_db

The file format is not compatible to 2.1.12.

CALL FOR ACTION:
Are you using the "partial reads/writes"? i.e. searching or inserting partial records with UPS_PARTIAL? If yes then please tell me - I still remove functionality that is not used or rarely used.

New Features

none

Bugfixes

issue #47: fixed bad assert in ups_cursor_move
issue #55: correctly handling error condition if mmap fails
issue #60: files are now truncated after a database was deleted with ups_env_erase_db (thanks, vevova)
issue #62: ups_info prints wrong value for "max record size"
issue #64: fixed segfault when recovering a database with a custom compare function; deprecated ups_db_set_compare_func, use ups_register_compare/UPS_PARAM_CUSTOM_COMPARE_NAME instead
issue #66: return with error if a database is modified by a committed transaction which was not yet flushed to disk (thanks, Balazs Bamer)
issue #67: fixed broken installation path and other "ham"/"hamsterdb" references (thanks, Wouter Hager)

Other Changes

Changed the .NET/C# delegate interface for custom compare functions; the delegate has to perform the marshalling now (see unittests for a sample)
Now restoring the "active blob page" after recovery to reduce the file size.
UPS_ENABLE_RECOVERY is now an alias for UPS_ENABLE_TRANSACTIONS