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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13560) S3ABlockOutputStream to support huge (many GB) file writes
Date Wed, 05 Oct 2016 19:28:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15549704#comment-15549704
] 

Steve Loughran commented on HADOOP-13560:
-----------------------------------------

Updated patch; tested s3a ireland

Uses fs.s3a.fast.upload as the switch to enable the new block output stream. This makes it
consistent with its (now deleted) predecessor; that is un-deprecated, with all configuration
options changed to use fast.upload in their names; FAST_UPLOAD in their fieldnames. 

I've tried to document all this, and add a new section on tuning queue sizes. 

> S3ABlockOutputStream to support huge (many GB) file writes
> ----------------------------------------------------------
>
>                 Key: HADOOP-13560
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13560
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.9.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>         Attachments: HADOOP-13560-branch-2-001.patch, HADOOP-13560-branch-2-002.patch,
HADOOP-13560-branch-2-003.patch, HADOOP-13560-branch-2-004.patch
>
>
> An AWS SDK [issue|https://github.com/aws/aws-sdk-java/issues/367] highlights that metadata
isn't copied on large copies.
> 1. Add a test to do that large copy/rname and verify that the copy really works
> 2. Verify that metadata makes it over.
> Verifying large file rename is important on its own, as it is needed for very large commit
operations for committers using rename



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