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From "Christopher Tubbs (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-1495) Host multiple read-only versions of tablets for query performance
Date Wed, 05 Jun 2013 17:26:20 GMT
Christopher Tubbs created ACCUMULO-1495:
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             Summary: Host multiple read-only versions of tablets for query performance
                 Key: ACCUMULO-1495
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1495
             Project: Accumulo
          Issue Type: New Feature
            Reporter: Christopher Tubbs


It might be worth providing read-only views of tablets on multiple servers, while writes go
to a single authoritative server. This could improve query performance in some cases.

Some things to consider:

# Consistency: can I read what I've just written?
# Configuration: how many copies?
# Configuration: how long between syncs?
# Performance: locality, number of file replicas

Variation:

Permit multiple hosting only on tables that have been locked for writes (useful with a strictly
enforced clone-and-lock feature).

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