pnowojski commented on a change in pull request #11687:
[FLINK-16536][network][checkpointing] Implement InputChannel state recovery for
unaligned checkpoint
URL: https://github.com/apache/flink/pull/11687#discussion_r408336918
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/SingleInputGate.java
##########
@@ -243,7 +249,23 @@ void requestPartitions() throws IOException,
InterruptedException {
}
for (InputChannel inputChannel :
inputChannels.values()) {
- inputChannel.requestSubpartition();
+ executor.submit(() -> {
+ try {
+
inputChannel.initializeState(reader);
+ } catch (Throwable t) {
+
inputChannel.setError(t);
+ }
+ });
+ }
+
+ for (InputChannel inputChannel :
inputChannels.values()) {
+ executor.submit(() -> {
+ try {
+
inputChannel.requestSubpartition();
Review comment:
Could it be that we start reading from a channel before we actually request
subpartition? For example:
```
Optional<BufferAndAvailability> RemoteInputChannel#getNextBuffer() throws
IOException {
(...)
checkState(partitionRequestClient != null, "Queried for a buffer before
requesting a queue."); // ??
```
or what if `partitionRequestClient` is already not null, but
```
partitionRequestClient.requestSubpartition(partitionId, subpartitionIndex,
this, 0);
```
hasn't completed?
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