stevenzwu commented on code in PR #9308:
URL: https://github.com/apache/iceberg/pull/9308#discussion_r1431702572
##########
flink/v1.18/flink/src/main/java/org/apache/iceberg/flink/source/reader/IcebergSourceSplitReader.java:
##########
@@ -80,6 +88,35 @@ public RecordsWithSplitIds<RecordAndPosition<T>> fetch()
throws IOException {
}
if (currentReader.hasNext()) {
+ if (pausedSplits.contains(currentSplitId)) {
+ // Wait until the reader is unblocked. Wake every second to catch any
missed signal.
+ // Return empty records if wakeUp is called, so pauseOrResumeSplits
could be processed.
+ boolean first = true;
Review Comment:
@mxm According to the API contract, it is ok to return empty result in case
of spurious wakeups. that is what the current PR does already.
```
if (wakeUp.get()) {
wakeUp.set(false);
return new RecordsBySplits(Collections.emptyMap(),
Collections.emptySet());
}
```
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