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Posted to common-dev@hadoop.apache.org by "Lohit Vijayarenu (JIRA)" <ji...@apache.org> on 2013/09/20 23:00:54 UTC

[jira] [Resolved] (HADOOP-9988) HDFS Compatible ViewFileSystem

     [ https://issues.apache.org/jira/browse/HADOOP-9988?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lohit Vijayarenu resolved HADOOP-9988.
--------------------------------------

      Resolution: Duplicate
    Release Note: creating JIRA has some issues, closing this dup of HADOOP-9985
    
> HDFS Compatible ViewFileSystem
> ------------------------------
>
>                 Key: HADOOP-9988
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9988
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Lohit Vijayarenu
>             Fix For: 2.0.6-alpha
>
>
> There are multiple scripts and projects like pig, hive, elephantbird refer to HDFS URI as hdfs://namenodehostport/ or hdfs:/// . In federated namespace this causes problem because supported scheme for federation is viewfs:// . We will have to force all users to change their scripts/programs to be able to access federated cluster. 
> It would be great if thee was a way to map viewfs scheme to hdfs scheme without exposing it to users. Opening this JIRA to get inputs from people who have thought about this in their clusters.
> In our clusters we ended up created another class HDFSCompatibleViewFileSystem which hijacks both hdfs.fs.impl and viewfs.fs.impl and passes down filesystem calls to ViewFileSystem. Is there any suggested approach other than this?

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