arunpandianp commented on code in PR #35523:
URL: https://github.com/apache/beam/pull/35523#discussion_r2204045126
##########
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/windmill/client/AbstractWindmillStream.java:
##########
@@ -472,17 +505,74 @@ private void clearPhysicalStreamForDebug() {
currentPhysicalStreamForDebug.set(null);
}
+ private void onHalfClosePhysicalStreamTimeout(PhysicalStreamHandler handler)
{
+ synchronized (this) {
+ if (currentPhysicalStream != handler || clientClosed || isShutdown) {
+ return;
+ }
+ try {
+ handler.streamDebugMetrics.recordHalfClose();
+ closingPhysicalStreams.add(handler);
+ currentPhysicalStream = null;
+ halfCloseFuture = null; // This is the currently running future.
+ clearPhysicalStreamForDebug();
+ requestObserver.onCompleted();
+ } catch (Exception e) {
+ // XXX figure out
+ }
+ try {
+ @NonNull PhysicalStreamHandler streamHandler = newResponseHandler();
Review Comment:
do we need this logic to recreate streams here? If so, can we call
startStream()?
I think `requestObserver.onCompleted();` will recreate the streams and we
don't need to recreate streams here.
##########
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/windmill/client/AbstractWindmillStream.java:
##########
@@ -122,13 +140,23 @@ protected AbstractWindmillStream(
StreamObserverFactory streamObserverFactory,
Set<AbstractWindmillStream<?, ?>> streamRegistry,
int logEveryNStreamFailures,
- String backendWorkerToken) {
+ String backendWorkerToken,
+ Duration halfClosePhysicalStreamAfter) {
+ checkArgument(!halfClosePhysicalStreamAfter.isNegative());
this.backendWorkerToken = backendWorkerToken;
this.physicalStreamFactory =
(StreamObserver<ResponseT> observer) ->
streamObserverFactory.from(clientFactory, observer);
this.physicalStreamDeadlineSeconds =
streamObserverFactory.getDeadlineSeconds();
+ if (!halfClosePhysicalStreamAfter.isZero()
+ &&
halfClosePhysicalStreamAfter.compareTo(Duration.ofSeconds(physicalStreamDeadlineSeconds))
+ >= 0) {
+ logger.debug("Not attempting to half-close cleanly as stream deadline is
shorter.");
+ halfClosePhysicalStreamAfter = Duration.ZERO;
+ }
+ this.halfClosePhysicalStreamAfter = halfClosePhysicalStreamAfter;
+ this.closingPhysicalStreams = new HashSet<>();
Review Comment:
will IdentityHashMap be a better candidate.
##########
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/windmill/client/AbstractWindmillStream.java:
##########
@@ -472,17 +505,74 @@ private void clearPhysicalStreamForDebug() {
currentPhysicalStreamForDebug.set(null);
}
+ private void onHalfClosePhysicalStreamTimeout(PhysicalStreamHandler handler)
{
+ synchronized (this) {
+ if (currentPhysicalStream != handler || clientClosed || isShutdown) {
+ return;
+ }
+ try {
+ handler.streamDebugMetrics.recordHalfClose();
+ closingPhysicalStreams.add(handler);
+ currentPhysicalStream = null;
+ halfCloseFuture = null; // This is the currently running future.
+ clearPhysicalStreamForDebug();
+ requestObserver.onCompleted();
+ } catch (Exception e) {
+ // XXX figure out
+ }
+ try {
+ @NonNull PhysicalStreamHandler streamHandler = newResponseHandler();
+ streamHandler.streamDebugMetrics.recordStart();
+ currentPhysicalStream = streamHandler;
+ currentPhysicalStreamForDebug.set(currentPhysicalStream);
+ requestObserver.reset(physicalStreamFactory.apply(new
ResponseObserver(streamHandler)));
+ onFlushPending(true);
+ } catch (Exception e) {
+ // XXX figure out
+ }
+ }
+ }
+
private void onPhysicalStreamCompletion(Status status, PhysicalStreamHandler
handler) {
synchronized (this) {
+ final boolean wasActiveStream = currentPhysicalStream == handler;
if (currentPhysicalStream == handler) {
clearPhysicalStreamForDebug();
currentPhysicalStream = null;
+ if (halfCloseFuture != null) {
+ halfCloseFuture.cancel(false);
+ halfCloseFuture = null;
Review Comment:
these steps are repeated in a few places, consider moving them to a function
like `clearPhysicalStream()`
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