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From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PHOENIX-4735) Improve defaults for out of the box configuration
Date Thu, 10 May 2018 22:12:00 GMT
James Taylor created PHOENIX-4735:
-------------------------------------

             Summary: Improve defaults for out of the box configuration
                 Key: PHOENIX-4735
                 URL: https://issues.apache.org/jira/browse/PHOENIX-4735
             Project: Phoenix
          Issue Type: Improvement
            Reporter: James Taylor


There are a number of features that require being enabled to use. I think it'd make sense
to update some of these for 5.0 release (and perhaps for 4.x releases too).
 * *phoenix.default.update.cache.frequency* sets UPDATE_CACHE_FREQUENCY for newly created
tables to prevent an RPC per query to RS hostingĀ  SYSTEM.CATALOG. A default value of 5000
(5 seconds) would be good.
 * *phoenix.use.stats.parallelization* determines if we use statistics to further parallelize
a query. A default value of false would be good default as clusters can become overloaded
if the guidepost width is set too low. We'd still parallelize by region.
 * *phoenix.costbased.optimizer.enabled* determines if optimizer decisions should use statistics.
We should set this to true by default as it improves decisions made by the optimizer.
 * *phoenix.autoupgrade.enabled* determines if an upgrade is automatically triggered when
the first new client connects to a newer server. We should set the default value to be false
and force users to run the {{EXECUTE UPGRADE}} command so that upgrades are more explicit.
 * *phoenix.schema.isNamespaceMappingEnabled* determines if schemas map to namespaces in HBase.
We should turn this on by default.
 * *phoenix.schema.mapSystemTablesToNamespace* same as above, but for SYSTEM schema. We should
turn this on by default as well



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