Shekharrajak commented on code in PR #19510:
URL: https://github.com/apache/druid/pull/19510#discussion_r3295038545
##########
extensions-contrib/druid-iceberg-extensions/src/main/java/org/apache/druid/iceberg/input/IcebergInputSource.java:
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@@ -134,6 +177,9 @@ public Stream<InputSplit<List<String>>> createSplits(
@Override
public int estimateNumSplits(InputFormat inputFormat, @Nullable
SplitHintSpec splitHintSpec) throws IOException
{
+ if (useArrowReader) {
+ return 1;
Review Comment:
Future PR: Enable parallel ingestion (maxNumConcurrentSubTasks > 1) when
useArrowReader: true by adding split-coordination plumbing to
IcebergInputSource. Currently Arrow mode forces a single subtask to guarantee
correctness;
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