More fixes to prevent 10min stalls in recovering secondaries #2276
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
This fixes an issue where one could hang for 10min for the second parallel peek to time out, if one happened to catch the edge of a onlySpilled transition wrong.
This is to guard against the case where 1. Peeks with sequence numbers 0-39 are submitted 2. A 15min pause happens, in which timeout removes the peek tracker data 3. Peeks with sequence numbers 40-59 are submitted, with the same peekId The second round of peeks wouldn't have the data left that it's allowed to start running peek 40 immediately, and thus would hang for 10min until it gets cleaned up. Also, guard against overflowing the sequence number.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 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Outdated suggestions cannot be applied.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.
This version uses
timed_outinstead ofoperation_obsolete, as we can't introduce a new error type on the wire in a backwards compatible way. This means we might kill some parallel peeks when we could have just ignored a response or two, but that will be fixed on master.