godfreyhe commented on a change in pull request #18707:
URL: https://github.com/apache/flink/pull/18707#discussion_r804479757
##########
File path:
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/plan/nodes/exec/batch/BatchExecExchange.java
##########
@@ -126,22 +130,25 @@ public String getDescription() {
parallelism = 1;
break;
case HASH:
- int[] keys = ((HashDistribution)
inputProperty.getRequiredDistribution()).getKeys();
- RowType inputType = (RowType) inputEdge.getOutputType();
- String[] fieldNames =
- Arrays.stream(keys)
- .mapToObj(i ->
inputType.getFieldNames().get(i))
- .toArray(String[]::new);
partitioner =
- new BinaryHashPartitioner(
- HashCodeGenerator.generateRowHash(
- new
CodeGeneratorContext(planner.getTableConfig()),
- inputEdge.getOutputType(),
- "HashPartitioner",
- keys),
- fieldNames);
+ createHashPartitioner(
+ ((HashDistribution) requiredDistribution),
inputType, planner);
parallelism = ExecutionConfig.PARALLELISM_DEFAULT;
break;
+ case KEEP_INPUT_AS_IS:
+ RequiredDistribution inputDistribution =
+ ((KeepInputAsIsDistribution)
requiredDistribution).getInputDistribution();
+ checkArgument(
Review comment:
for singleton distribution, I will add the (max) parallelism limitation
in ExecNodeBase#translateToPlan
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