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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-15964) Add S3A support for Async Scatter/Gather IO
Date Mon, 03 Dec 2018 12:33:00 GMT
Steve Loughran created HADOOP-15964:
---------------------------------------

             Summary: Add S3A support for Async Scatter/Gather IO
                 Key: HADOOP-15964
                 URL: https://issues.apache.org/jira/browse/HADOOP-15964
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
    Affects Versions: 3.3.0
            Reporter: Steve Loughran


HADOOP-11867 is proposing adding a new scatter/gather IO API.

For an object store to take advantage of it, it should be doing things like
* coalescing reads even with a gap between them
* choosing an optimal ordering of requests
* submitting reads into the executor pool/using any async API provided by the FS.
* detecting overlapping reads (and then what?)
* switching to HTTP 2 where supported

Do this for S3A




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