Release v0.3.14 (stable)

The stable release with the complete workaround for an incoherence flaw of Linux unified page/buffer cache.
Nonetheless the cause for this trouble may be an issue of Intel CPU cache/MESI.
See libmdbx' issue#269 for more information.

New:

• Added GTEST_CLONE_URL CMake's variable to override GoogteTest download Git repo URL.
• Added logging support (built-in proxy for libmdbx).

Fixes:

• Complete workaround for an incoherence flaw of Linux unified page/buffer cache.
• Fixed transaction leak (not-an-abortion) when schema load failed.

Please refer to the Git' log and libmdbx' ChangeLog for more information.

v0.2.12 (update of legacy/obsolete 0.2.x branch)

The stable release of legacy/obsolete 0.2 branch with the complete workaround for an incoherence flaw of Linux unified page/buffer cache.
Nonetheless the cause for this trouble may be an issue of Intel CPU cache/MESI.
See libmdbx' issue#269 for more information.

New:

• Added GTEST_CLONE_URL CMake's variable to override GoogteTest download Git repo URL.
• Added logging support (built-in proxy for libmdbx).

Fixes:

• Complete workaround for an incoherence flaw of Linux unified page/buffer cache.
• Fixed transaction leak (not-an-abortion) when schema load failed.

Please refer to the Git' log and libmdbx' ChangeLog for more information.

Release v0.3.13 (obsolete)

The stable release with fixes for large and huge databases sized of 4..128 TiB.

libfpta important changes:

• Fixed unaligned access inside the t1ha hash functions on ARM.

libmdbx important changes:

v0.11.4.1 at 2022-02-02:

• Fixed handling MDBX_opt_rp_augment_limit for GC's records from huge transactions.
• Fixed build on Android (avoid including sys/sem.h).
• Fixed missing copy assignment operator for mdbx::move_result.
• Fixed missing & for std::ostream &operator<<() overloads.
• Fixed unexpected EXDEV (Cross-device link) error from mdbx_env_copy().
• Fixed base64 encoding/decoding bugs in auxillary C++ API.
• Fixed overflow of pgno_t during checking PNL on 64-bit platforms.
• Fixed excessive PNL checking after sort for spilling.
• Reworked checking MAX_PAGENO and DB upper-size geometry limit.
• Fixed build for some combinations of versions of MSVC and Windows SDK.

Minors:

• Added workaround for CLANG bug D79919/PR42445.
• Fixed minor unused parameter warning.
• Refine/cleanup internal logging.
• Refined line splitting inside hex/base58/base64 encoding to avoid \n at the end.
• Added workaround for modern libstdc++ with CLANG < 4.x
• Relaxed txn-check rules for auxiliary functions.
• Clarified a comments and descriptions, etc.
• Using the -fno-semantic interposition option to reduce the overhead to calling self own public functions.

v0.11.3 at 2021-12-31:

• Disabled C++20 concepts for stupid AppleClang 13.x
• Fixed internal collision of MDBX_SHRINK_ALLOWED with MDBX_ACCEDE.

Minors:

• Fixed returning MDBX_RESULT_TRUE (unexpected -1) from mdbx_env_set_option().
• Added mdbx_env_get_syncbytes() and mdbx_env_get_syncperiod().
• Clarified description of MDBX_INTEGERKEY.
• Reworked/simplified mdbx_env_sync_internal().
• Fixed extra assertion inside mdbx_cursor_put() for MDBX_DUPFIXED cases.
• Avoiding extra looping inside mdbx_env_info_ex().
• Explicitly enabled core dumps from stochastic tests scripts on Linux.
• Fixed mdbx_override_meta() to avoid false-positive assertions.
• For compatibility reverted returning MDBX_ENODATAfor some cases.

Please refer to the ChangeLog for more historical information and actual TODOs.

Release v0.3.12

libfpta's important changes:

• Rewritting filters to actually hollow fpta_filter_none without open underlying cursor.
• Rewritting filters instead of returning FPTA_ETYPE.
• Resolved all warnings and build errors for all actual version of GCC and CLANG compilers.
• Fixed test for 32-bit builds.
• Refactoring fpta_name_refresh_filter() and related functions to avoid refresh-overhead.
• Resolved all UB shown by UBSAN, including unaligned access.

libmdbx's important changes:

Backward compatibility break:

The database format signature has been changed to prevent
forward-interoperability with an previous releases, which may lead to a
false positive diagnosis of database corruption
due to flaws of an old library versions. This change is mostly invisible:

• previously versions are unable to read/write a new DBs;
• but the new release is able to handle an old DBs and will silently upgrade ones.

v0.11.2.22 at 2021-12-13:

• Fixed internal collision of MDBX_SHRINK_ALLOWED with MDBX_ACCEDE.
• Fixed returning MDBX_RESULT_TRUE (unexpected -1) from mdbx_env_set_option().
• Fixed extra assertion inside mdbx_cursor_put() for MDBX_DUPFIXED cases.
• Fixed mdbx_override_meta() to avoid false-positive assertions.

v0.11.2 at 2021-12-02:

• Fixed unexpected MDBX_PROBLEM error because of update an obsolete meta-page.
• Fixed returning MDBX_NOTFOUND error in case an inexact value found for MDBX_GET_BOTH operation.

v0.11.1 at 2021-10-23:

• Fixed unaligned access regression after the #pragma pack fix for modern compilers.
• Fixed possibility of meta-pages clashing after manually turn to a particular meta-page using mdbx_chk utility.

v0.10.4 at 2021-10-10:

• Fixed possibility of looping update GC during transaction commit (no public issue since the problem was discovered inside Positive Technologies).
• In debugging builds fixed a too small (single page) by default DB shrink threshold.

v0.10.3 at 2021-08-27:

• Always setup madvise while opening DB (fixes erthink/libmdbx#231).
• Fixed checking legacy P_DIRTY flag (0x10) for nested/sub-pages.

v0.10.2 at 2021-07-26:

• Allow to predefine/override MDBX_BUILD_TIMESTAMP for builds reproducibility.

• Avoided MDBX_TXN_FULL error for large transactions when possible.

• The MDBX_READERS_LIMIT increased to 32767.

• mdbx_chk now skips iteration & checking of DB' records if corresponding page-tree is corrupted (to avoid SIGSEGV, ASAN failures, etc).

• Added more checks for rare/fuzzing corruption cases.

• Fixed excess meta-pages checks in case mdbx_chk is called to check the DB for a specific meta page and thus could prevent switching to the selected meta page, even if the check passed without errors.

• Fixed recursive use of SRW-lock on Windows cause by MDBX_NOTLS option.

• Fixed log a warning during a new DB creation.

• Fixed false-negative mdbx_cursor_eof() result.

• Fixed make install with non-GNU install utility (OSX, BSD).

• Fixed installation by CMake in special cases by complete use GNUInstallDirs's variables.

• Fixed C++ Buffer issue with std::string and alignment.

• Fixed safe64_reset() for platforms without atomic 64-bit compare-and-swap.

• Fixed hang/shutdown on big-endian platforms without __cxa_thread_atexit().

• Fixed using bad meta-pages if DB was partially/recoverable corrupted.

• Fixed bootid generation on Windows for case of change system' time.

• Fixed test framework keygen-related issue.

v0.10.1 at 2021-06-01:

• Added -p option to mdbx_stat utility for printing page operations statistic.

• Added fallback from OFD locking to legacy non-OFD POSIX file locks on an EINVAL error.

• Added Plan 9 network file system to the whitelist for an ability to open a DB in exclusive mode.

• Support for opening from WSL2 environment a DB hosted on Windows drive and mounted via DrvFs (i.e by Plan 9 noted above).

• Fixed confusing/messy errors when build library from unfit github's archives (erthink/libmdbx#197).

• Fixed #​e​l​s​i​f typo.

• Fixed rare unexpected MDBX_PROBLEM error during altering data in huge transactions due to wrong spilling/oust of dirty pages (erthink/libmdbx#195).

• Re-Fixed WSL1/WSL2 detection with distinguishing (erthink/libmdbx#97).

libfpta release v0.3.11 (obsolete)

Backward compatibility break:

The database format signature has been changed to prevent forward-interoperability with an previous releases, which may lead to a false positive diagnosis of database corruption due to flaws of an old library versions.

This change is mostly invisible:

• previously versions are unable to read/write a new DBs;
• but the new release is able to handle an old DBs and will silently upgrade ones.