sofastack / sofa-jraft

A production-grade java implementation of RAFT consensus algorithm.
https://www.sofastack.tech/projects/sofa-jraft/
Apache License 2.0
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fix: last committed index in BallotBox #1109

Closed killme2008 closed 2 weeks ago

killme2008 commented 3 weeks ago

Motivation & Modification:

Main changes:

Result:

1049 , #1092 , #1105

Summary by CodeRabbit

coderabbitai[bot] commented 3 weeks ago

Walkthrough

The recent refactor in the jraft-core module includes consolidating BallotBox initialization into a dedicated initBallotBox() method, integrating it into the node start-up sequence. Additionally, several changes were made across the core, option, and storage classes to improve logging, testing, and error handling mechanisms, particularly addressing consistency issues on node restarts.

Changes

File Path Change Summary
jraft-core/src/main/java/com/.../NodeImpl.java Refactor BallotBox initialization logic; added new methods for testing and adjusted timeout handling.
jraft-core/src/main/java/com/.../BallotBoxOptions.java Added lastCommittedIndex field with getter and setter methods.
jraft-core/src/main/java/com/.../SnapshotExecutor.java Introduced getLastSnapshotIndex() method.
jraft-core/src/main/java/com/.../SnapshotExecutorImpl.java Removed comments and annotations from getLastSnapshotIndex().
jraft-core/src/test/java/com/.../BallotBoxTest.java Added tests for lastCommittedIndex initialization and consistency.
jraft-extension/java-log-storage-impl/src/main/java/com/.../HybridLogStorage.java Added imports and exception handling for directory creation.
jraft-extension/java-log-storage-impl/src/test/java/com/.../NodeTest.java Added assertions and synchronization improvements in test methods.

Sequence Diagram(s)

Suppressed due to the simplicity and varied nature of the changes.

Assessment against linked issues

Objective Addressed Explanation
Initialize lastCommittedIndex to avoid inconsistent readIndex values after a restart (issue #1049)
Ensure readIndex() returns consistent values post node restart (issue #1049)

Poem

The BallotBox has found its place, In logs and snapshots, a stable base. Through refactor's careful hand, Consistency now rules the land. A node restart, no fear to face, For lastCommittedIndex holds the grace.


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killme2008 commented 3 weeks ago

@fengjiachun Please take a look at some fixes around lastCommittedIndex in BallotBox.