[fix](arrow-flight-sql) Fix FE not found arrow flight schema (apache#…

…43960)

### What problem does this PR solve?

Problem Summary:

After query first phase `exec_plan_fragment`, FE will fetches arrow
schema to BE, but BE will generate arrow schema when query second stage
`ResultSinkLocalState::open`.

Therefore, this pr is changed to generate arrow schema in the first
phase `ResultSinkLocalState::init`.

Fix:

```
rrmsg: Status [errorCode=NOT_FOUND, errorMsg=(172.16.212.191)[NOT_FOUND]FE not found arrow flight schema, maybe query has been canceled], error code: null, error msg:
java.lang.RuntimeException: fetch arrow flight schema failed, finstId: 3573efbeb10c44a7-956531d8e15d1630, errmsg: Status [errorCode=NOT_FOUND, errorMsg=(172.16.212.191)[NOT_FOUND]FE not found arrow flight schema, maybe query has been canceled]
        at org.apache.doris.service.arrowflight.FlightSqlConnectProcessor.fetchArrowFlightSchema(FlightSqlConnectProcessor.java:126) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.service.arrowflight.DorisFlightSqlProducer.executeQueryStatement(DorisFlightSqlProducer.java:229) ~[doris-fe.jar:1.2-SNAPSHOT]
        at org.apache.doris.service.arrowflight.DorisFlightSqlProducer.getFlightInfoStatement(DorisFlightSqlProducer.java:260) ~[doris-fe.jar:1.2-SNAPSHOT]
```

be/src/pipeline/exec/result_sink_operator.cpp

@@ -46,14 +46,25 @@ Status ResultSinkLocalState::init(RuntimeState* state, LocalSinkStateInfo& info)
     _wait_for_dependency_timer = ADD_TIMER_WITH_LEVEL(_profile, timer_name, 1);
     auto fragment_instance_id = state->fragment_instance_id();
 
+    auto& p = _parent->cast<ResultSinkOperatorX>();
     if (state->query_options().enable_parallel_result_sink) {
         _sender = _parent->cast<ResultSinkOperatorX>()._sender;
     } else {
-        auto& p = _parent->cast<ResultSinkOperatorX>();
         RETURN_IF_ERROR(state->exec_env()->result_mgr()->create_sender(
                 fragment_instance_id, p._result_sink_buffer_size_rows, &_sender, state));
     }
     _sender->set_dependency(fragment_instance_id, _dependency->shared_from_this());
+
+    _output_vexpr_ctxs.resize(p._output_vexpr_ctxs.size());
+    for (size_t i = 0; i < _output_vexpr_ctxs.size(); i++) {
+        RETURN_IF_ERROR(p._output_vexpr_ctxs[i]->clone(state, _output_vexpr_ctxs[i]));
+    }
+    if (p._sink_type == TResultSinkType::ARROW_FLIGHT_PROTOCAL) {
+        std::shared_ptr<arrow::Schema> arrow_schema;
+        RETURN_IF_ERROR(get_arrow_schema_from_expr_ctxs(_output_vexpr_ctxs, &arrow_schema,
+                                                        state->timezone()));
+        _sender->register_arrow_schema(arrow_schema);
+    }
     return Status::OK();
 }
 
@@ -62,10 +73,6 @@ Status ResultSinkLocalState::open(RuntimeState* state) {
     SCOPED_TIMER(_open_timer);
     RETURN_IF_ERROR(Base::open(state));
     auto& p = _parent->cast<ResultSinkOperatorX>();
-    _output_vexpr_ctxs.resize(p._output_vexpr_ctxs.size());
-    for (size_t i = 0; i < _output_vexpr_ctxs.size(); i++) {
-        RETURN_IF_ERROR(p._output_vexpr_ctxs[i]->clone(state, _output_vexpr_ctxs[i]));
-    }
     // create writer based on sink type
     switch (p._sink_type) {
     case TResultSinkType::MYSQL_PROTOCAL: {
@@ -79,10 +86,6 @@ Status ResultSinkLocalState::open(RuntimeState* state) {
         break;
     }
     case TResultSinkType::ARROW_FLIGHT_PROTOCAL: {
-        std::shared_ptr<arrow::Schema> arrow_schema;
-        RETURN_IF_ERROR(get_arrow_schema_from_expr_ctxs(_output_vexpr_ctxs, &arrow_schema,
-                                                        state->timezone()));
-        _sender->register_arrow_schema(arrow_schema);
         _writer.reset(new (std::nothrow) vectorized::VArrowFlightResultWriter(
                 _sender.get(), _output_vexpr_ctxs, _profile));
         break;

be/src/service/internal_service.cpp

@@ -903,6 +903,7 @@ void PInternalService::fetch_arrow_flight_schema(google::protobuf::RpcController
         auto st = ExecEnv::GetInstance()->result_mgr()->find_arrow_schema(
                 UniqueId(request->finst_id()).to_thrift(), &schema);
         if (!st.ok()) {
+            LOG(WARNING) << "fetch arrow flight schema failed, errmsg=" << st;
             st.to_protobuf(result->mutable_status());
             return;
         }