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wudi
deb079478d
### What problem does this PR solve? Issue Number: None Problem Summary: A cloud Stream Load request can still arrive from a BE after scaling has removed that BE from FE metadata. Resolving the compute group then obtains a null backend and throws a NullPointerException, which reaches the caller as a generic INTERNAL_ERROR. Return a descriptive UserException containing the missing backend ID instead. The existing RPC exception handler converts it to ANALYSIS_ERROR. The request fails before plan generation, allowing the existing CDC task failure and automatic rescheduling flow to handle recovery. Add an RPC-level test for a missing backend with token authentication and a compute-group header. It checks the returned status and backend ID, absence of an execution plan, and ConnectContext cleanup.
# Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. # fe-common This module is used to store some common classes of other modules. # spark-dpp This module is Spark DPP program, used for Spark Load function. Depends: fe-common # fe-core This module is the main process module of FE. Depends: fe-common, spark-dpp