Re: [jira] Created: (HBASE-2387) [stargate] FUSE module for mounting Stargate exported tablespaces

[Nyamul Hassan <ny...@gmail.com>]

On Mar 29, 2010 10:39 PM, "Andrew Purtell (JIRA)" <ji...@apache.org> wrote:
>
> [stargate] FUSE module for mounting Stargate exported tablespaces
> -----------------------------------------------------------------
>
>                 Key: HBASE-2387
>                 URL: https://issues.apache.org/jira/browse/HBASE-2387
>             Project: Hadoop HBase
>          Issue Type: New Feature
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>
>
> FUSE: http://fuse.sourceforge.net/
>
> Create a FUSE translator that mounts Stargate exported tablespaces into
the Linux filesystem namespace. Support Stargate when it is running in
multiuser mode. Should run in either of two modes:
>
> 1) Map 1:1 the exported tablespace under the mount point.
>
> 2) Emulate a filesystem, like s3fs (
http://code.google.com/p/s3fs/wiki/FuseOverAmazon)
>    - Stargate multiget and multiput operations can help performance
>    - Translate paths under the mount point to row keys for good load
spreading, {{/a/b/c/file.ext}} becomes {{file.ext/c/b/a}}
>    - Consider borrowing from Tom White's Hadoop S3 FS (HADOOP-574), and
store file data as blocks.
>        -- After fetching the inode can stream all blocks in a Stargate
multiget. This would support arbitrary file sizes. Otherwise there is a
practical limit somewhere around 20-50 MB with default regionserver heaps.
>        -- So,  {{file.ext/c/b/a}} gets the inode. Blocks would be keyed
using the SHA-1 hash of their contents.
>        -- Because new writes produce new blocks with unique hashes, this
is like a dedup filesystem. Use ICV to maintain use counters on blocks.
>
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This looks like a very interesting project. Has there been any movement on
this?

Regards
HASSAN