[server][client] Add cooperative KV backpressure based on RocksDB L0#3463
Open
platinumhamburg wants to merge 1 commit into
Open
[server][client] Add cooperative KV backpressure based on RocksDB L0#3463platinumhamburg wants to merge 1 commit into
platinumhamburg wants to merge 1 commit into
Conversation
platinumhamburg
force-pushed
the
kv-backpressure-naming
branch
2 times, most recently
from
ae8a015 to
793a2eb
Compare
Introduce a two-tier backpressure model to keep RocksDB write stall from blocking RPC handler threads: - Tier 1 (piggyback): server reports a normalized [0, 1) pressure on PbPutKvRespForBucket once L0 reaches kv.backpressure.l0-slowdown-trigger (default 12); client throttles per bucket with max_throttle_ms * p^3 via client.writer.kv-backpressure.max-throttle-ms (default 5000ms). - Tier 2 (hard rejection): once L0 reaches RocksDB's level0_slowdown_writes_trigger, server throws StorageBackpressureException (Errors code 71, RetriableException); client applies the same max-throttle window as backoff before retry. Add maintenance configuration doc for the new server option.
platinumhamburg
force-pushed
the
kv-backpressure-naming
branch
from
793a2eb to
6470160
Compare
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
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Introduce a two-tier backpressure model to keep RocksDB write stall from blocking RPC handler threads:
Add maintenance configuration doc for the new server option.
Purpose
Linked issue: close #3454 3454
Brief change log
Tests
API and Format
Documentation