Fix issue 2046: Memory leak during btree(agtype) (#2060) #2070
Conversation
This file contains 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
Fixed the memory leaks during a btree index build. The issue has to do with how PostgreSQL allocates and frees its memory. Usually, contexts are destroyed, freeing up the memory in that context for the functions. However, sometimes this destruction happens way too late for it to be helpful. In the case of btree compare, the context destruction doesn't happen until after the sort has completed. The solution is to add in pfrees to manage the memory we use, ourselves. Additionally, propagated these changes to a few other functions. More PRs will be created to address other locations where this applies. No regression tests were impacted. No additionall regression tests are needed. Conflicts: src/backend/utils/adt/agtype.c
github-actions
bot
added
PG15
MuhammadTahaNaveed
approved these changes
Aug 23, 2024
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Outdated suggestions cannot be applied.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.
Fixed the memory leaks during a btree index build.
The issue has to do with how PostgreSQL allocates and frees its memory. Usually, contexts are destroyed, freeing up the memory in that context for the functions. However, sometimes this destruction happens way too late for it to be helpful. In the case of btree compare, the context destruction doesn't happen until after the sort has completed. The solution is to add in pfrees to manage the memory we use, ourselves.
Additionally, propagated these changes to a few other functions. More PRs will be created to address other locations where this applies.
No regression tests were impacted.
No additionall regression tests are needed.
Resolved Conflicts:
src/backend/utils/adt/agtype.c