diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/insert/OlapInsertExecutor.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/insert/OlapInsertExecutor.java
index 0153700863d3bef..43a3327a3788845 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/insert/OlapInsertExecutor.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/insert/OlapInsertExecutor.java
@@ -40,6 +40,7 @@
 import org.apache.doris.planner.DataSink;
 import org.apache.doris.planner.DataStreamSink;
 import org.apache.doris.planner.ExchangeNode;
+import org.apache.doris.planner.MultiCastDataSink;
 import org.apache.doris.planner.OlapTableSink;
 import org.apache.doris.planner.PlanFragment;
 import org.apache.doris.qe.ConnectContext;
@@ -139,7 +140,28 @@ public void finalizeSink(PlanFragment fragment, DataSink sink, PhysicalSink phys
             // set schema and partition info for tablet id shuffle exchange
             if (fragment.getPlanRoot() instanceof ExchangeNode
                     && fragment.getDataPartition().getType() == TPartitionType.TABLET_SINK_SHUFFLE_PARTITIONED) {
-                DataStreamSink dataStreamSink = (DataStreamSink) (fragment.getChild(0).getSink());
+                DataSink childFragmentSink = fragment.getChild(0).getSink();
+                DataStreamSink dataStreamSink = null;
+                if (childFragmentSink instanceof MultiCastDataSink) {
+                    MultiCastDataSink multiCastDataSink = (MultiCastDataSink) childFragmentSink;
+                    int outputExchangeId = (fragment.getPlanRoot()).getId().asInt();
+                    // which DataStreamSink link to the output exchangeNode?
+                    for (DataStreamSink currentDataStreamSink : multiCastDataSink.getDataStreamSinks()) {
+                        int sinkExchangeId = currentDataStreamSink.getExchNodeId().asInt();
+                        if (outputExchangeId == sinkExchangeId) {
+                            dataStreamSink = currentDataStreamSink;
+                            break;
+                        }
+                    }
+                    if (dataStreamSink == null) {
+                        throw new IllegalStateException("Can not find DataStreamSink in the MultiCastDataSink");
+                    }
+                } else if (childFragmentSink instanceof DataStreamSink) {
+                    dataStreamSink = (DataStreamSink) childFragmentSink;
+                } else {
+                    throw new IllegalStateException("Unsupported DataSink: " + childFragmentSink);
+                }
+
                 Analyzer analyzer = new Analyzer(Env.getCurrentEnv(), ConnectContext.get());
                 dataStreamSink.setTabletSinkSchemaParam(olapTableSink.createSchema(
                         database.getId(), olapTableSink.getDstTable(), analyzer));