On 15/07/11 16:48, Michael Segel wrote:
Claudio,
I'm not sure on how to answer this...
Yes, we've got a prototype of a Lucene on HBase w Spatial that we're starting
to test.
That's Cool Michael.
Is there a chance to read more on your prototype ? ;)
With respect to hashing...
In one project we just hashed the key using the SHA-1 hash already in Java.
This gave us the randomness without having to try to build a separate index.
But we're still using the base key for the row. Its not like we're creating a
secondary index on a column value.
There are a couple of other projects out there on Git Hub so you may want to
check them out.
HTH
-Mike
Date: Fri, 15 Jul 2011 14:32:50 +0200
From: [email protected]
To: [email protected]
Subject: Hash indexing of HFiles
Hello list,
at SIGMOD this year i've seen a spreading of different storage files for
HBase, with different techniques. My scenario and usage doesn't really
require range queries, so I thought I'd take advantage of even faster
random i/o from hash indexing of data in each sequence file.
Does anybody know if anybody has developed other indexing techniques for
sequence files other than Btrees?
Thanks!
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