[ISSUE #1883] Optimize RebalanceImpl#try_query_assignment performance #1884
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🧹 Nitpick comments (4)
rocketmq-client/src/consumer/consumer_impl/re_balance/rebalance_impl.rs (4)
159-165: Validate the presence of client_instance.
Good job adding a check for None. This prevents potential runtime errors, but consider whether there's any fallback or graceful termination needed beyond just returning false.
175-180: Broker rebalance condition.
Returning true when the topic is found in the broker rebalance table is straightforward, but ensure that any subsequent processing (metrics, logging, etc.) is also handled if needed.
183-183: Gracefully handle missing allocate_message_queue_strategy.
Logging an error is user-friendly, but consider if you need to raise an error metric or an event in a monitoring system (if available) for better visibility.
223-226: Mark client rebalance only after exhausting retries.
Centralizing the update in topic_client_rebalance is a good choice. If you anticipate more reasons for insertion to happen, consider whether separate or consolidated logic would be more maintainable.
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rocketmq-client/src/consumer/consumer_impl/re_balance/rebalance_impl.rs(3 hunks)
🔇 Additional comments (4)
rocketmq-client/src/consumer/consumer_impl/re_balance/rebalance_impl.rs (4)
167-172: Separate checks for client and broker rebalance improved readability.
Using two distinct checks is clearer, but be mindful of the return values (true/false) to ensure you reflect the final state or next steps consistently.
201-201: Explicitly pass calculated timeout.
It's consistent with the preceding logic. Verify that other calls in the codebase also honor the newly dynamic timeout approach.
[approve]
211-213: Handle only timeout errors for retries.
This is good practice: continuing on a specific error type and returning on others. Just ensure that all meaningful error variants (e.g., network issues, or other retriable statuses) are handled as well.
191-195: Refined retry-based timeout approach.
Dividing the overall timeout per retry is a neat idea. Ensure that division by zero never occurs if TIMEOUT_CHECK_TIMES is dynamically configured. Also confirm that partial or small timeouts won't lead to spurious request cancellations.
✅ Verification successful
No risk of division by zero or timeout issues
The constant TIMEOUT_CHECK_TIMES is defined as a hardcoded value of 3, and QUERY_ASSIGNMENT_TIMEOUT is set to 3000. Since these are compile-time constants, there's no risk of division by zero. The timeout calculation (3000/3 * retry_number) will result in progressive timeouts of 1000ms, 2000ms, and 3000ms, which are reasonable values for network operations.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Verifying that TIMEOUT_CHECK_TIMES is never set to zero at compile-time.
rg --context 3 "TIMEOUT_CHECK_TIMES *="
Length of output: 41
Script:
#!/bin/bash
# Let's search for the constant definition and its usage
rg "TIMEOUT_CHECK_TIMES" -A 3 -B 3
Length of output: 1742
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #1884 +/- ##
==========================================
- Coverage 28.44% 28.44% -0.01%
==========================================
Files 475 475
Lines 66929 66930 +1
==========================================
Hits 19035 19035
- Misses 47894 47895 +1 ☔ View full report in Codecov by Sentry. |
Which Issue(s) This PR Fixes(Closes)
Fixes #1883
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Bug Fixes
New Features
Refactor