JingsongLi commented on a change in pull request #13010:
URL: https://github.com/apache/flink/pull/13010#discussion_r468305915
##########
File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/functions/source/datagen/DataGeneratorSource.java
##########
@@ -77,8 +102,11 @@ public void run(SourceContext<T> ctx) throws Exception {
while (isRunning) {
for (int i = 0; i < taskRowsPerSecond; i++) {
- if (isRunning && generator.hasNext()) {
+ if (isRunning && generator.hasNext() &&
(numberOfRows == null || outputSoFar < toOutput)) {
synchronized (ctx.getCheckpointLock()) {
+ if (numberOfRows != null) {
+ outputSoFar++;
Review comment:
I have an idea: print `outputSoFar` in `close`. It is good for debugging.
##########
File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/functions/source/datagen/DataGeneratorSource.java
##########
@@ -77,8 +102,11 @@ public void run(SourceContext<T> ctx) throws Exception {
while (isRunning) {
for (int i = 0; i < taskRowsPerSecond; i++) {
- if (isRunning && generator.hasNext()) {
+ if (isRunning && generator.hasNext() &&
(numberOfRows == null || outputSoFar < toOutput)) {
synchronized (ctx.getCheckpointLock()) {
+ if (numberOfRows != null) {
Review comment:
Remove this if?
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