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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-12994) Specify PositionedReadable, add contract tests, fix problems
Date Thu, 07 Apr 2016 19:08:25 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-12994?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Steve Loughran updated HADOOP-12994:
    Attachment: HADOOP-12994-003.patch

HADOOP-12994 patch 003
-address chris's concerns
-add an option for supports positioned readable; default is driven by "supports seek"
-split up test operations into separate test cases
-tested on local, hdfs, s3 filesystems

I've caught the EOF in Azure and downgraded to a -1, but not tested it...my ASF MSDN sub hasn't
renewed; I'm chasing that up, and am currently azureless

> Specify PositionedReadable, add contract tests, fix problems
> ------------------------------------------------------------
>                 Key: HADOOP-12994
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12994
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: HADOOP-12994-001.patch, HADOOP-12994-002.patch, HADOOP-12994-003.patch
> Some work on S3a has shown up that there aren't tests catching regressions in readFully,
reviewing the documentation shows that its specification could be improved.
> # review the spec
> # review the implementations
> # add tests (proposed: to the seek contract; streams which support seek should support
positioned readable)
> # fix code, where it differs significantly from HDFS or LocalFS

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