All Implemented Interfaces:
PhysicalVisitor< Void, Wrapper, RuntimeException>
extends AbstractOpWrapperVisitor< Void, RuntimeException>
Visitor to collect stats such as cost and parallelization info of operators within a fragment.
All operators have cost associated with them, but only few type of operators such as scan,
store and exchanges (both sending and receiving) have parallelization info associated with them.
Methods inherited from class org.apache.drill.exec.physical.base.
AbstractPhysicalVisitor visitBroadcastSender, visitChildren, visitFilter, visitFlatten, visitHashAggregate, visitHashPartitionSender, visitHashPartitionSender, visitIteratorValidator, visitLateralJoin, visitLimit, visitMergingReceiver, visitOrderedPartitionSender, visitProducerConsumer, visitProject, visitRangePartitionSender, visitReceiver, visitRowKeyJoin, visitScreen, visitSender, visitSingleSender, visitSort, visitStatisticsAggregate, visitStatisticsMerge, visitStreamingAggregate, visitSubScan, visitTrace, visitUnion, visitUnnest, visitUnorderedReceiver, visitUnpivot, visitValues, visitWindowFrame, visitWriter
Methods inherited from class java.lang.
Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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