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https://issues.apache.org/jira/browse/HADOOP-19161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17852161#comment-17852161
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ASF GitHub Bot commented on HADOOP-19161:
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steveloughran commented on PR #6789:
URL: https://github.com/apache/hadoop/pull/6789#issuecomment-2148196238
@mukund-thakur @saxenapranav @HarshitGupta11 @ahmarsuhail @virajjasani
FYI, this is ready to review. Once in, viraj's mkdirs option can go in, and
then we can document this option in performance.md
ABFS can use it for their options
> S3A: option "fs.s3a.performance.flags" to take list of performance flags
> ------------------------------------------------------------------------
>
> Key: HADOOP-19161
> URL: https://issues.apache.org/jira/browse/HADOOP-19161
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs/s3
> Affects Versions: 3.4.1
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
> Labels: pull-request-available
>
> HADOOP-19072 shows we want to add more optimisations than that of
> HADOOP-18930.
> * Extending the new optimisations to the existing option is brittle
> * Adding explicit options for each feature gets complext fast.
> Proposed
> * A new class S3APerformanceFlags keeps all the flags
> * it build this from a string[] of values, which can be extracted from
> getConf(),
> * and it can also support a "*" option to mean "everything"
> * this class can also be handed off to hasPathCapability() and do the right
> thing.
> Proposed optimisations
> * create file (we will hook up HADOOP-18930)
> * mkdir (HADOOP-19072)
> * delete (probe for parent path)
> * rename (probe for source path)
> We could think of more, with different names, later.
> The goal is make it possible to strip out every HTTP request we do for
> safety/posix compliance, so applications have the option of turning off what
> they don't need.
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