discard tx on commit/abort in case of an error too #3
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
It looks good to me. Please give me a short time to write a test to verify the problem and fix before I merge. Thank you! |
hoytech
added a commit
that referenced
this pull request
Jul 23, 2020
|
Merged. I added a test which needs to be manually enabled since it depends on how LMDB lays out the DB internally, which could change: https://github.com/hoytech/lmdbxx/blob/master/check.cc#L329 And I also mentioned this fix in the README. Thank you! |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Prevents double deallocation of tx on MDB_MAP_FULL when committing. I think this fix is semantically correct but judge for yourself. It avoids memory management issues regarding the transactions in case of an error when committing.
Our code reacts to MDB_MAP_FULL and MDB_MAP_RESIZED errors by updating the mapsize (once all tx are closed) and rescheduling the database ops. Without this fix, we have memory lifecycle issues in the LMDB code.