stevenzwu commented on code in PR #9308:
URL: https://github.com/apache/iceberg/pull/9308#discussion_r1431736659
##########
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;
+
+ while (pausedSplits.contains(currentSplitId)) {
+ if (first) {
+ LOG.info("Reader {} paused reading split {}", indexOfSubtask,
currentSplitId);
+ first = false;
+ } else {
+ LOG.trace("Reader {} is still paused reading split {}",
indexOfSubtask, currentSplitId);
+ }
+
+ synchronized (wakeUp) {
+ if (wakeUp.get()) {
+ wakeUp.set(false);
+ return new RecordsBySplits(Collections.emptyMap(),
Collections.emptySet());
+ }
+
+ try {
+ wakeUp.wait(1000);
+ } catch (InterruptedException e) {
+ Thread.currentThread().interrupt();
+ throw new RuntimeException("Interrupted while paused due to
watermark alignment.", e);
Review Comment:
@pvary sorry, I misspoken. I meant `IOException` instead of
`InterruptedException`
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org
For additional commands, e-mail: issues-h...@iceberg.apache.org
