KurtYoung commented on a change in pull request #8156:
[FLINK-12168][table-planner-blink] Support e2e limit, sortLimit, rank, union in
blink batch
URL: https://github.com/apache/flink/pull/8156#discussion_r275146308
##########
File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/plan/nodes/physical/batch/BatchExecSortLimit.scala
##########
@@ -92,4 +109,45 @@ class BatchExecSortLimit(
costFactory.makeCost(rowCount, cpuCost, 0, 0, memCost)
}
+ override def getDamBehavior: DamBehavior = DamBehavior.FULL_DAM
+
+ override def getInputNodes: util.List[ExecNode[BatchTableEnvironment, _]] =
+ List(getInput.asInstanceOf[ExecNode[BatchTableEnvironment, _]])
+
+ override def translateToPlanInternal(
+ tableEnv: BatchTableEnvironment): StreamTransformation[BaseRow] = {
+ if (limitEnd == Long.MaxValue) {
+ throw new TableException("Not support limitEnd is max value now!")
+ }
+
+ val input = getInputNodes.get(0).translateToPlan(tableEnv)
+ .asInstanceOf[StreamTransformation[BaseRow]]
+ val inputType = input.getOutputType.asInstanceOf[BaseRowTypeInfo]
+ val types = inputType.getFieldTypes.map(createInternalTypeFromTypeInfo)
+
+ // generate comparator
+ val generator = new SortCodeGenerator(
+ tableEnv.getConfig, keys, keys.map(types(_)), orders, nullsIsLast)
+
+ // TODO If input is ordered, there is no need to use the heap.
+ val operator = new SortLimitOperator(
+ isGlobal,
+ limitStart,
+ limitEnd,
+ generator.generateRecordComparator("SortLimitComparator"))
Review comment:
ditto
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