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List:       hadoop-dev
Subject:    Re: *FileSystem and *Fs APIs
From:       Zhenhua Guo <jenvor () gmail ! com>
Date:       2010-12-31 17:16:45
Message-ID: AANLkTinc-4tq_F3rTX8w9fOQHKQtM3EcsbuQ-kUYPvCR () mail ! gmail ! com
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Eli,
Thanks.
So the new API is being used by default in current version of Hadoop,
e.g. 0.21.0 and up?

Gerald

On Fri, Dec 31, 2010 at 12:06 AM, Eli Collins <eli@cloudera.com> wrote:
> Hey Gerald,
>
> Yes, there's a new API. FileSystem is replaced by two new classes:
> FileContext (the user-facing API) and AbstractFileSystem (the fs
> implementation API). So the AbstractFileSystem derived classes replace
> the FileSystem derived classes.
>
> Thanks,
> Eli
>
> On Thu, Dec 30, 2010 at 8:16 PM, Zhenhua Guo <jenvor@gmail.com> wrote:
>> I noticed that in HDFS there are two sets of API classes - *FileSystem
>> and *FS, e.g. FtpFileSystem vs. FtpFs, ChecksumFileSystem vs.
>> ChecksumFS. I wonder what is the difference. One is replacement of the
>> other?
>>
>> Thanks
>> Gerald
>>
>
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