Other than keeping things fresh, another motivation is that this fixes CALCITE-1436 (AggregateNode NPE for aggregators other than SUM/COUNT), which affects aggregate functions on our system tables.
Also sets shouldConvertRaggedUnionTypesToVarying = true, a new type system parameter that prefers VARCHAR over CHAR. This is better for Druid, because we don't really have support for a true CHAR type. [ Full content available at: https://github.com/apache/incubator-druid/pull/6404 ] This message was relayed via gitbox.apache.org for [email protected]
