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https://issues.apache.org/jira/browse/HADOOP-19354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17903952#comment-17903952
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ASF GitHub Bot commented on HADOOP-19354:
-----------------------------------------

hadoop-yetus commented on PR #7214:
URL: https://github.com/apache/hadoop/pull/7214#issuecomment-2526364481

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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   |||| _ trunk Compile Tests _ |
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[/branch-mvninstall-root.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7214/3/artifact/out/branch-mvninstall-root.txt)
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Binary files and potentially other changes not applied. Please rebase and 
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   |||| _ Patch Compile Tests _ |
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[/results-checkstyle-hadoop-tools_hadoop-aws.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7214/3/artifact/out/results-checkstyle-hadoop-tools_hadoop-aws.txt)
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[/results-javadoc-javadoc-hadoop-tools_hadoop-aws-jdkUbuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7214/3/artifact/out/results-javadoc-javadoc-hadoop-tools_hadoop-aws-jdkUbuntu-11.0.25+9-post-Ubuntu-1ubuntu120.04.txt)
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   | +1 :green_heart: |  unit  |   2m 48s |  |  hadoop-aws in the patch passed. 
 |
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   |  |   | 137m 10s |  |  |
   
   
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7214/3/artifact/out/Dockerfile
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   | GITHUB PR | https://github.com/apache/hadoop/pull/7214 |
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7214/3/testReport/ |
   | Max. process+thread count | 530 (vs. ulimit of 5500) |
   | modules | C: hadoop-tools/hadoop-aws U: hadoop-tools/hadoop-aws |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-7214/3/console |
   | versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
   | Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   




> S3A: InputStreams to be created by factory under S3AStore
> ---------------------------------------------------------
>
>                 Key: HADOOP-19354
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19354
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.4.2
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Major
>              Labels: pull-request-available
>
> Migrate S3AInputStream creation into a factory pattern, push down into 
> S3AStore.
> Proposed factories
> * default: whatever this release has as default
> * classic: current S3AInputStream
> * prefetch: prefetching
> * analytics: new analytics stream
> * other: reads a classname from another prop, instantiates.
> Also proposed
> * stream to implement some stream capability to declare what they are 
> (classic, prefetch, analytics, other). 
> h2. Implementation
> All callbacks used by the stream also to call directly onto S3AStore.
> S3AFileSystem must not be invoked at all (if it is needed: PR is still not 
> ready).
> Some interface from Instrumentation will be passed to factory; this shall 
> include a way to create new per-stream 
> The factory shall implement org.apache.hadoop.service.Service; S3AStore shall 
> do same and become a subclass of CompositeService. It shall attach the 
> factory as a child, so they can follow the same lifecycle. We shall do the 
> same for anything else that gets pushed down.
> Everything related to stream creation must go from s3afs; and creation of the 
> factory itself. This must be done in S3AStore.initialize(). 
> As usual, this will complicate mocking. But the streams themselves should not 
> require changes, at least significant ones.
> Testing.
> * The huge file tests should be tuned so each of the different ones uses a 
> different stream, always.
> * use a -Dstream="factory name" to choose factory, rather than the -Dprefetch
> * if not set, whatever is in auth-keys gets picked up.



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