nlimpid commented on code in PR #19370:
URL: https://github.com/apache/datafusion/pull/19370#discussion_r2645980055
##########
datafusion/datasource/src/write/demux.rs:
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@@ -228,6 +232,19 @@ async fn row_count_demuxer(
next_send_steam = (next_send_steam + 1) % minimum_parallel_files;
}
+
+ // if there is no batch send but with a single file, send an empty batch
+ if single_file_output && !is_batch_received {
Review Comment:
Done. Updated the doc comment for with_single_file_output()
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