[jira] [Created] (IOTDB-4958) [UDF] use a udf which has not been created , should return error whatever the timeseries exists or not

[changxue (Jira)]

changxue created IOTDB-4958:
-------------------------------

             Summary: [UDF] use a udf which has not been created , should 
return error whatever the timeseries exists or not
                 Key: IOTDB-4958
                 URL: https://issues.apache.org/jira/browse/IOTDB-4958
             Project: Apache IoTDB
          Issue Type: Bug
    Affects Versions: 0.14.0-SNAPSHOT
            Reporter: changxue
            Assignee: Yuan Tian


[UDF] use a udf which has not been created , should return error whatever the 
timeseries exists or not

问题：
 # timeseries 不存在时，返回空，不报错
 # timeseries 存在时，报错

期望结果：

无论timeseries 是否存在，都应该报错。

reproduction:
{code:sql}
show functions;

drop database root.**;
-- notice this

IoTDB> select my_compare_http(s1,s2) from root.udf.upload.d1
+----+
|Time|
+----+
+----+
Empty set.
It costs 0.003s

create timeseries root.udf.upload.d1.s1 with datatype=int32;
create timeseries root.udf.upload.d1.s2 with datatype=int32;

-- notice this
IoTDB> select my_compare_http(s1,s2) from root.udf.upload.d1
Msg: 416: Error occurred during inferring UDF data type: 
java.lang.RuntimeException: Failed to reflect UDF instance, because UDF 
MY_COMPARE_HTTP has not been registered.
 {code}



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