je-ik commented on a change in pull request #17112:
URL: https://github.com/apache/beam/pull/17112#discussion_r831886429
##########
File path:
sdks/java/io/elasticsearch/src/main/java/org/apache/beam/sdk/io/elasticsearch/ElasticsearchIO.java
##########
@@ -2246,27 +2286,43 @@ public static StatefulBatching fromSpec(BulkIO spec) {
}
return input
- .apply(ParDo.of(new
Reshuffle.AssignShardFn<>(spec.getMaxParallelRequestsPerWindow())))
+ .apply(ParDo.of(new
Reshuffle.AssignShardFn<>(spec.getMaxParallelRequests())))
.apply(groupIntoBatches);
}
}
@Override
public PCollectionTuple expand(PCollection<Document> input) {
ConnectionConfiguration connectionConfiguration =
getConnectionConfiguration();
-
checkState(connectionConfiguration != null,
"withConnectionConfiguration() is required");
+ PCollection<Document> docResults;
+ PCollection<Document> globalDocs = input.apply(Window.into(new
GlobalWindows()));
+
if (getUseStatefulBatches()) {
- return input
- .apply(StatefulBatching.fromSpec(this))
- .apply(
- ParDo.of(new BulkIOStatefulFn(this))
- .withOutputTags(Write.SUCCESSFUL_WRITES,
TupleTagList.of(Write.FAILED_WRITES)));
+ docResults =
+ globalDocs
+ .apply(StatefulBatching.fromSpec(this))
+ .apply(ParDo.of(new BulkIOStatefulFn(this)));
} else {
- return input.apply(
- ParDo.of(new BulkIOBundleFn(this))
- .withOutputTags(Write.SUCCESSFUL_WRITES,
TupleTagList.of(Write.FAILED_WRITES)));
+ docResults = globalDocs.apply(ParDo.of(new BulkIOBundleFn(this)));
+ }
+
+ return docResults
+ .setWindowingStrategyInternal(input.getWindowingStrategy())
+ .apply(
+ ParDo.of(new ResultFilteringFn())
+ .withOutputTags(Write.SUCCESSFUL_WRITES,
TupleTagList.of(Write.FAILED_WRITES)));
+ }
+
+ private static class ResultFilteringFn extends DoFn<Document, Document> {
+ @ProcessElement
+ public void processElement(@Element Document doc, MultiOutputReceiver
out) {
+ if (doc.getHasError()) {
+ out.get(Write.FAILED_WRITES).outputWithTimestamp(doc,
doc.getTimestamp());
+ } else {
+ out.get(Write.SUCCESSFUL_WRITES).outputWithTimestamp(doc,
doc.getTimestamp());
Review comment:
Yeah, that is about my doubts as well. Flink does not enforce size of
bundle as 1, but instead handles them (optionally) in alignment with checkpoint
barriers (and maxBundleSize). Watermarks flow with the data and (for stateless)
DoFn I really don't see a way that it could guarantee holding the watermark
between bundles.
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