Add sanity checks on Configurations to make sure hbase confs have been loaded
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Key: HBASE-3840
URL: https://issues.apache.org/jira/browse/HBASE-3840
Project: HBase
Issue Type: Improvement
Affects Versions: 0.92.0
Reporter: Todd Lipcon
Fix For: 0.92.0
A common user error (and even hbase dev error) is to pass a vanilla Hadoop
Configuration into HBase methods that expect to see all of the relevant hbase
defaults from hbase-default.xml. This often results in NPE or issues locating
ZK.
We should add a method like HBaseConfiguration.verify(conf) which ensures that
the conf has incorporated hbase-default.xml. We can do this by checking for
existence of hbase.defaults.for.version.
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