KAFKA-19614: The records appended to the log are illegal because of an incorrect base offset during TestLinearWriteSpeed

[jim0987795064]

• Changes: Each append now writes to a new MemoryRecords batch instead of reusing a single batch object.

• Reasons: If we reuse the same batch, its baseoffset will keep accumulating.

• Performance demonstration:

original performance:

new performance:

There is no significant impact on performance after applying new method of writing info to log.

[chia7712]

[ant:checkstyle] [ERROR] /home/chia7712/project/kafka/jmh-benchmarks/src/main/java/org/apache/kafka/jmh/log/TestLinearWriteSpeed.java:65:5: NCSS for this method is 108 (max allowed is 100). [JavaNCSS]
[ant:checkstyle] [ERROR] /home/chia7712/project/kafka/jmh-benchmarks/src/main/java/org/apache/kafka/jmh/log/TestLinearWriteSpeed.java:65:5: NPath Complexity is 720 (max allowed is 500). [NPathComplexity]
[ant:checkstyle] [ERROR] /home/chia7712/project/kafka/jmh-benchmarks/src/main/java/org/apache/kafka/jmh/log/TestLinearWriteSpeed.java:65:5: Method main length is 171 lines (max allowed is 170). [MethodLength]

[github-actions]

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