Oops, forget my first question about range query (if keys are hashed,
they can not be queried based on a range...)
Still curious to have info on hash function in shell shell (2.) and
advice on md5/jenkins/sha1 (3.)
Tks,
Eric
On 16/03/2011 09:52, Eric Charles wrote:
Hi,
To help avoid hotspots, I'm planning to use hashed keys in some tables.
1. I wonder if this strategy is adviced for range queries (from/to
key) use case, because the rows will be randomly distributed in
different regions. Will it cause some performance loose?
2. Is it possible to query from hbase shell with something like "get
't1', @hash('r1')", to let the shell compute the hash for you from the
readable key.
3. There are MD5 and Jenkins classes in hbase.util package. What would
you advice? what about SHA1?
Tks,
- Eric
PS: I searched the archive but didn't find the answers.
