[jira] Resolved: (HADOOP-2932) Trash initialization generates "deprecated filesystem name" warning even if the name is correct.

["Mahadev konar (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-2932?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mahadev konar resolved HADOOP-2932.
-----------------------------------

    Resolution: Fixed

resolved by  HADOOP-2902.

> Trash initialization generates "deprecated filesystem name" warning even if the name is correct.
> ------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-2932
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2932
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: conf, dfs, fs
>    Affects Versions: 0.17.0
>            Reporter: Konstantin Shvachko
>            Assignee: Mahadev konar
>            Priority: Blocker
>             Fix For: 0.17.0
>
>
> HADOOP-1967 made it mandatory to prefix the value of "fs.default.name" with "hdfs://".
> # During name-node initialization the value of the "fs.default.name" is set to <host>:<port> without the prefix even if the original name was prefixed with "hdfs://". This makes the Trash constructor, which is called with the modified configuration print the following warning:
> {code}
> 08/03/03 17:29:36 WARN fs.FileSystem: "<host>:<port>" is a deprecated filesystem name. Use "hdfs://<host>:<port>/" instead.
> 08/03/03 17:29:36 WARN fs.FileSystem: "<host>:<port>" is a deprecated filesystem name. Use "hdfs://<host>:<port>/" instead.
> {code}
> The warning is printed twice because FileSystem.getDefaultUri() is called twice during new Trash() and then inside Trash.getEmptier().
> # Other than that the name-node never checks the correctness of the "fs.default.name", which it should.
> As a side note the Trash class should be rearranged IMO. 
> - The Trash.getEmtier() should be replaced by 
> {code}
>   static public Runnable getEmptier(Configuration conf) throws IOException
> {code}
> - Trash should have only one private constructor, the one that is called in Emtier.run().
> - Then we can replace 
> {code} new Trash(conf).getEmptier() {code}
> with
> {code} Trash.getEmptier(conf) {code}
> in order to avoid unnecessary creation of the Trash object on the stack.

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