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release changes #198

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16 changes: 7 additions & 9 deletions CHANGELOG.md
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@@ -1,11 +1,9 @@
## Unreleased
## v0.0.1

* Refactor package and module name
* Add telemetry to logical and physical reads
* Add a JSON `TelemetryFormat` implementation
* Add `TelemetryFormat` interface and refactor
* Update parquet prefetching logic to track adjacent columns
* Change default of sequential prefetch base to 2.0
* Added CHANGELOG
* Initial analytics-accelerator-s3 v0.0.1 alpha release.

## v0.1 (October 16, 2024)
## v0.0.2

* Split prefetch footer request into two. ([#188](https://github.com/awslabs/analytics-accelerator-s3/pull/188))
* Prefetch dictionaries and column data separately ([#189](https://github.com/awslabs/analytics-accelerator-s3/pull/189))
* Add support to seek beyond end of stream ([#192](https://github.com/awslabs/analytics-accelerator-s3/pull/192))
11 changes: 1 addition & 10 deletions README.md
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Expand Up @@ -22,7 +22,7 @@ To get started, import the library dependency from Maven into your project:
<dependency>
<groupId>software.amazon.s3.analyticsaccelerator</groupId>
<artifactId>analyticsaccelerator-s3</artifactId>
<version>0.0.1</version>
<version>0.0.2</version>
<scope>compile</scope>
</dependency>
```
Expand Down Expand Up @@ -86,15 +86,6 @@ To establish the performance impact of changes, we rely on a benchmark derived f

On S3A, we have observed a total suite execution acceleration between 10% and 27%, with some queries showing a speed-up of up to 40%.

**Known issue:** We are currently observing a regression of up to 8% on queries similar to the Q44 in [issue 173](https://github.com/awslabs/analytics-accelerator-s3/issues/173). We have determined the root cause of this issue is a data over-read due to overly eager columnar prefetching when all of the following is true:
1. The query is filtering on dictionary encoded columns.
1. The query is selective, and most objects do not contain the required data.
1. The query operates on a multi-GB dataset.

We are actively working on this issue. You can track the progress in the [issue 173](https://github.com/awslabs/analytics-accelerator-s3/issues/173) page.

The remaining TPC-DS queries show no regressions within the specified margin of error.

## Contributions

We welcome contributions to Analytics Accelerator Library for Amazon S3! Please see the [contributing guidelines](doc/CONTRIBUTING.md) for more information on how to report bugs, build from source code, or submit pull requests.
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2 changes: 1 addition & 1 deletion input-stream/build.gradle.kts
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Expand Up @@ -10,7 +10,7 @@ import com.github.jk1.license.render.TextReportRenderer

val group = "software.amazon.s3.analyticsaccelerator"
val artefact = "analyticsaccelerator-s3"
val currentVersionNumber = "0.0.1"
val currentVersionNumber = "0.0.2"

val isSnapshot = findProperty("snapshotBuild") == "true"
val currentVersion = if (isSnapshot) "SNAPSHOT" else currentVersionNumber;
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