zhijiangW commented on a change in pull request #11687:
URL: https://github.com/apache/flink/pull/11687#discussion_r419494982
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File path:
flink-tests/src/test/java/org/apache/flink/test/streaming/runtime/BackPressureITCase.java
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@@ -94,7 +94,7 @@ private static Configuration
createNetworkBufferConfiguration() {
final Configuration configuration = new Configuration();
final int memorySegmentSizeKb = 32;
- final MemorySize networkBuffersMemory =
MemorySize.parse(memorySegmentSizeKb * (NUM_TASKS + 2) + "kb");
+ final MemorySize networkBuffersMemory =
MemorySize.parse(memorySegmentSizeKb * 6 + "kb");
Review comment:
In previous way the `LocalBufferPool` for `SingleInputGate` has 0
required buffers, but now we adjust it to guarantee at-least one required
buffer for local channel state recovery.
In this ITCase, the exclusive buffers for map and sink vertex should be `2
* 2` , and the floating buffers in `LocalBufferPool` should be `2 * 1`, then
the total minimum buffer amount should be `6`.
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