zhijiangW commented on a change in pull request #11351: [FLINK-16404][runtime]
Solve the potential deadlock problem when reducing exclusive buffers to zero
URL: https://github.com/apache/flink/pull/11351#discussion_r396264764
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/SingleInputGate.java
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@@ -140,6 +141,8 @@
/** Channels, which notified this input gate about available data. */
private final ArrayDeque<InputChannel> inputChannelsWithData = new
ArrayDeque<>();
+ private final HashMap<Integer, InputChannel>
channelsBlockedByCheckpoint = new HashMap<>();
Review comment:
It is better to reuse the blocked states from `CheckpointBarrierAligner` if
possible to avoid managing it duplicated in another place and causing potential
inconsistency.
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