branch-4.1: [fix](be) Keep prefetch reader alive for async tasks #63796#63867
Merged
Conversation
Problem Summary: S3/OSS prefetch timeout can cancel and close PrefetchBufferedReader while an async PrefetchBuffer task is still running. The task kept PrefetchBuffer alive but only stored the underlying FileReader as a raw pointer, so the owner could destroy the reader before the async task resumed on the error path and logged reader metadata. Keep a shared FileReader reference in each PrefetchBuffer so the async prefetch task cannot outlive the reader it dereferences, and add a unit test that covers close timeout while the prefetch read is blocked.
Contributor
|
Thank you for your contribution to Apache Doris. Please clearly describe your PR:
|
Contributor
|
run buildall |
Contributor
|
skip buildall |
yiguolei
approved these changes
May 29, 2026
github-actions
Bot
added
the
approved
Contributor
Author
|
PR approved by at least one committer and no changes requested. |
Contributor
Author
|
PR approved by anyone and no changes requested. |
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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Cherry-picked from #63796