pnowojski commented on a change in pull request #11507: [FLINK-16587] Add basic
CheckpointBarrierHandler for unaligned checkpoint
URL: https://github.com/apache/flink/pull/11507#discussion_r405587339
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/UnionInputGate.java
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@@ -77,37 +77,34 @@
*/
private final LinkedHashSet<InputGate> inputGatesWithData = new
LinkedHashSet<>();
- /** The total number of input channels across all unioned input gates.
*/
- private final int totalNumberOfInputChannels;
+ /** Input channels across all unioned input gates. */
+ private final InputChannel[] inputChannels;
/**
* A mapping from input gate to (logical) channel index offset. Valid
channel indexes go from 0
* (inclusive) to the total number of input channels (exclusive).
*/
- private final Map<InputGate, Integer> inputGateToIndexOffsetMap;
+ private final int[] inputGateChannelIndexOffsets;
public UnionInputGate(InputGate... inputGates) {
this.inputGates = checkNotNull(inputGates);
checkArgument(inputGates.length > 1, "Union input gate should
union at least two input gates.");
- this.inputGateToIndexOffsetMap =
Maps.newHashMapWithExpectedSize(inputGates.length);
this.inputGatesWithRemainingData =
Sets.newHashSetWithExpectedSize(inputGates.length);
+ final int maxGateIndex =
Arrays.stream(inputGates).mapToInt(InputGate::getGateIndex).max().orElse(0);
Review comment:
From the `UnionInputGate` java doc:
> * <strong>It is NOT possible to recursively union union input
gates.</strong>
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