yashmayya commented on code in PR #13801:
URL: https://github.com/apache/kafka/pull/13801#discussion_r1255451696
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connect/runtime/src/main/java/org/apache/kafka/connect/storage/ConnectorOffsetBackingStore.java:
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@@ -279,10 +284,61 @@ public Future<Void> set(Map<ByteBuffer, ByteBuffer>
values, Callback<Void> callb
throw new IllegalStateException("At least one non-null offset
store must be provided");
}
+ boolean containsTombstones = values.containsValue(null);
+
+ // If there are tombstone offsets, then the failure to write to
secondary store will
+ // not be ignored. Also, for tombstone records, we first write to
secondary store and
+ // then to primary stores.
+ if (secondaryStore != null && containsTombstones) {
+ AtomicReference<Throwable> secondaryStoreTombstoneWriteError = new
AtomicReference<>();
+ Future<Void> secondaryWriteFuture = secondaryStore.set(values,
(secondaryWriteError, ignored) -> {
+ try (LoggingContext context = loggingContext()) {
+ if (secondaryWriteError != null) {
+ log.warn("Failed to write offsets with tombstone
records to secondary backing store", secondaryWriteError);
+ secondaryStoreTombstoneWriteError.compareAndSet(null,
secondaryWriteError);
+ } else {
+ log.debug("Successfully flushed tombstone offsets to
secondary backing store");
+ }
+ }
+ });
Review Comment:
I was suggesting the use of a plain `FutureCallback` instantiated via the
default constructor. We're still creating an unnecessary callback to handle
`secondaryWriteError` which will anyway be surfaced synchronously when we call
`get` on our `FutureCallback`?
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