James Taylor created PHOENIX-4735:
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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 hosting 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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