https://drill.apache.org/apidocs/org/apache/drill/exec/proto/SchemaBitControl.FragmentStatus.MessageSchema.html
SchemaBitControl.FragmentStatus.MessageSchema (Drill : 1.22.0 API)
declaration: package: org.apache.drill.exec.proto, class: SchemaBitControl, class: FragmentStatus, class: MessageSchema
drillapi