[stargate] FUSE module for mounting Stargate exported tablespaces
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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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