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https://issues.apache.org/jira/browse/HADOOP-19348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17930414#comment-17930414
]
ASF GitHub Bot commented on HADOOP-19348:
-----------------------------------------
steveloughran commented on PR #7334:
URL: https://github.com/apache/hadoop/pull/7334#issuecomment-2682936789
thanks. just been analytics-enabling storediag (!) and discovered it was
actually prefetch stream i'd bonded to. Will retest now.
with the storediag tests, can i ask that telemetry logs @ debug. thanks,
```
2025-02-25 18:29:05,250 [main] INFO s3.telemetry
(LogHelper.java:logAtLevel(47)) - [2025-02-25T18:29:05.249Z] [ start]
[-2646ti39lg28u] block.manager.make.range.available(generation=0, thread_id=1,
range=0-0, etag="74ab891e3bf169d399fd679c7d45bb08",
uri=s3://stevel-london/temp/subdir/dir-ebf44484-b3c2-4855-9a4d-b3ae45a56f1b/file,
range.effective=0-65535)
```
> S3A: Add initial support for analytics-accelerator-s3
> -----------------------------------------------------
>
> Key: HADOOP-19348
> URL: https://issues.apache.org/jira/browse/HADOOP-19348
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.4.2
> Reporter: Ahmar Suhail
> Priority: Major
> Labels: pull-request-available
>
> S3 recently released [Analytics Accelerator Library for Amazon
> S3|https://github.com/awslabs/analytics-accelerator-s3] as an Alpha release,
> which is an input stream, with an initial goal of improving performance for
> Apache Spark workloads on Parquet datasets.
> For example, it implements optimisations such as footer prefetching, and so
> avoids the multiple GETS S3AInputStream currently makes for the footer bytes
> and PageIndex structures.
> The library also tracks columns currently being read by a query using the
> parquet metadata, and then prefetches these bytes when parquet files with the
> same schema are opened.
> This ticket tracks the work required for the basic initial integration. There
> is still more work to be done, such as VectoredIO support etc, which we will
> identify and follow up with.
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