zhangshenghang commented on code in PR #10102:
URL: https://github.com/apache/seatunnel/pull/10102#discussion_r2568615343
##########
seatunnel-connectors-v2/connector-paimon/src/main/java/org/apache/seatunnel/connectors/seatunnel/paimon/source/PaimonSource.java:
##########
@@ -179,4 +182,32 @@ public SourceSplitEnumerator<PaimonSourceSplit,
PaimonSourceState> restoreEnumer
readBuilders,
1);
}
+
+ /** Infer parallelism based on Paimon data partition count. */
+ @Override
+ public int inferParallelism() {
+ int inferParallelism = 0;
+ try {
+ for (Map.Entry<String, ReadBuilder> entry :
readBuilders.entrySet()) {
+ String tableKey = entry.getKey();
+ ReadBuilder readBuilder = entry.getValue();
+ try {
+ List<PartitionEntry> partitionEntries =
+ readBuilder.newScan().listPartitionEntries();
+ inferParallelism += partitionEntries.size();
+ } catch (Exception e) {
+ log.warn(
+ "Failed to get partition info for table {},
skipping parallelism inference",
+ tableKey,
+ e);
+ return -1;
+ }
+ }
+
+ } catch (Exception e) {
+ log.warn("Failed to infer parallelism for Paimon source", e);
+ return -1;
+ }
+ return inferParallelism <= 0 ? 1 : inferParallelism;
+ }
Review Comment:
Is there a problem with this design? Is there any recommended calculation
rule for the parallelism of our Sink under normal circumstances? @Hisoka-X
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