nateab opened a new pull request, #113: URL: https://github.com/apache/flink-benchmarks/pull/113
## What is the purpose of the change Add a JMH benchmark for `StringDataSerializer` operations to measure the performance of `BinaryStringData` copy, serialize, and deserialize operations. This benchmark was used to validate the optimization in FLINK-39044 (apache/flink#27549), which adds a fast path in `BinaryStringData.copy()` for compact strings. **Benchmark methods:** - `copyCompactString` / `copyLargeString` - measures `serializer.copy()` performance - `serializeCompactString` / `serializeLargeString` - measures `serializer.serialize()` performance - `deserializeCompactString` / `deserializeLargeString` - measures `serializer.deserialize()` performance **Sample results showing FLINK-39044 optimization impact:** | Benchmark | Baseline (ops/ms) | Optimized (ops/ms) | Improvement | |-----------|-------------------|---------------------|-------------| | copyCompactString | 18,381 ± 22,770 | 807,198 ± 13,825 | **+4,292%** | | copyLargeString | 3,551 ± 4,718 | 748,334 ± 6,211 | **+20,975%** | ## Brief change log - Added `StringDataBenchmark.java` in `org.apache.flink.benchmark.full` package ## Verifying this change This change added tests and can be verified as follows: - Run the benchmark directly: `mvn clean install exec:exec -Dbenchmarks=".*StringDataBenchmark.*"` - Or run via main method in the benchmark class ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no - If yes, how is the feature documented? not applicable -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
