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https://issues.apache.org/jira/browse/HADOOP-19364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18024261#comment-18024261
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ASF GitHub Bot commented on HADOOP-19364:
-----------------------------------------
ahmarsuhail opened a new pull request, #8007:
URL: https://github.com/apache/hadoop/pull/8007
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### Description of PR
Based off of https://github.com/apache/hadoop/pull/7763
### How was this patch tested?
### For code changes:
- [ ] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
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> S3A Analytics-Accelerator: Add IoStatistics support
> ---------------------------------------------------
>
> Key: HADOOP-19364
> URL: https://issues.apache.org/jira/browse/HADOOP-19364
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Ahmar Suhail
> Priority: Major
>
> S3A provides InputStream statistics:
> [https://github.com/apache/hadoop/blob/trunk/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/statistics/S3AInputStreamStatistics.java]
> This helps track things like how many bytes were read from a stream etc.
>
> The current integration does not currently implement statistics. To start off
> with we should identify which of these statistics makes sense for us track in
> the new stream. Some examples are:
>
> 1/ bytesRead
> 2/ readOperationStarted
> 3/ initiateGetRequest
>
> Some of these (1 and 2) are more straightforward, and should not require any
> changes to analytics-accelerator-s3, but tracking GET requests will require
> this.
> We should also add tests that make assertions on these statistics. See
> ITestS3APrefetchingInputStream for an example to do this.
> And see https://issues.apache.org/jira/browse/HADOOP-18190 for how this was
> done on the prefetching stream, and PR:
> https://github.com/apache/hadoop/pull/4458
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