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Posted to hdfs-dev@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2014/11/26 12:45:13 UTC

[jira] [Resolved] (HDFS-6803) Documenting DFSClient#DFSInputStream expectations reading and preading in concurrent context

     [ https://issues.apache.org/jira/browse/HDFS-6803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran resolved HDFS-6803.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 2.7.0

committed patch -thanks!

> Documenting DFSClient#DFSInputStream expectations reading and preading in concurrent context
> --------------------------------------------------------------------------------------------
>
>                 Key: HDFS-6803
>                 URL: https://issues.apache.org/jira/browse/HDFS-6803
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs-client
>    Affects Versions: 2.4.1
>            Reporter: stack
>            Assignee: stack
>             Fix For: 2.7.0
>
>         Attachments: 9117.md.txt, DocumentingDFSClientDFSInputStream (1).pdf, DocumentingDFSClientDFSInputStream.v2.pdf, HDFS-6803v2.txt, HDFS-6803v3.txt, fsdatainputstream.md.v3.html
>
>
> Reviews of the patch posted the parent task suggest that we be more explicit about how DFSIS is expected to behave when being read by contending threads. It is also suggested that presumptions made internally be made explicit documenting expectations.
> Before we put up a patch we've made a document of assertions we'd like to make into tenets of DFSInputSteam.  If agreement, we'll attach to this issue a patch that weaves the assumptions into DFSIS as javadoc and class comments. 



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