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From "Sean Mackrory (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13871) ITestS3AInputStreamPerformance.testTimeToOpenAndReadWholeFileBlocks performance on branch-2.8 awful
Date Mon, 12 Dec 2016 16:06:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15742335#comment-15742335

Sean Mackrory commented on HADOOP-13871:

I think the JavaDoc comment for getS3AInputStream is out of date - still says it returns statistics,
rather than being for the stream itself. +1 (non-binding) otherwise.

Meant to post last week, but I wasn't seeing any S3 issues that day (and I was doing quite
a lot on S3 - but not on branch-2.8).

> ITestS3AInputStreamPerformance.testTimeToOpenAndReadWholeFileBlocks performance on branch-2.8
> ---------------------------------------------------------------------------------------------------
>                 Key: HADOOP-13871
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13871
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.8.0, 2.9.0, 3.0.0-alpha2
>         Environment: landsat bucket from the UK
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: HADOOP-13871-001.patch, HADOOP-13871-002.patch, HADOOP-13871-003.patch,
> The ITestS3AInputStreamPerformance.testTimeToOpenAndReadWholeFileBlocks takes 15s on
branch-2, but is now taking minutes.
> This is a regression, and it's surfacing on some internal branches too. Even where the
code hasn't changed. -It does not happen on branch-2, which has a later SDK.-

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