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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13432) S3A: Consider using TransferManager.download for copyToLocalFile
Date Mon, 12 Feb 2018 15:30:02 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13432?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-13432:
------------------------------------
    Parent: HADOOP-15220  (was: HADOOP-14831)

> S3A: Consider using TransferManager.download for copyToLocalFile
> ----------------------------------------------------------------
>
>                 Key: HADOOP-13432
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13432
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Rajesh Balamohan
>            Priority: Minor
>
> Currently it relies on the default implementation of FileSystem. But it would be good
to explore using TransferManager.download() (Ref: https://java.awsblog.com/post/Tx3Z7NO7C2TVLB/Parallelizing-Large-Downloads-for-Optimal-Speed
for recent aws-sdk-java).  When aws-sdk version is bumped it,it would automatically get the
benefit of parallel download sas well.



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