morningman opened a new issue #5613:
URL: https://github.com/apache/incubator-doris/issues/5613
**Describe the bug**
In some high-concurrency scenarios, FE will occasionally show `Channel
inactive error`
```
java.util.concurrent.ExecutionException: A error occurred: errorCode=2001
errorMessage:Channel inactive error!
at
com.baidu.jprotobuf.pbrpc.client.ProtobufRpcProxy$2.get(ProtobufRpcProxy.java:551)
~[jprotobuf-rpc-core-3.5.21.jar:?]
at
org.apache.doris.qe.Coordinator.sendFragment(Coordinator.java:516)
~[palo-fe.jar:3.4.0]
at org.apache.doris.qe.Coordinator.exec(Coordinator.java:444)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.qe.StmtExecutor.handleQueryStmt(StmtExecutor.java:820)
~[palo-fe.jar:3.4.0]
at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:337)
~[palo-fe.jar:3.4.0]
at org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:284)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.qe.ConnectProcessor.handleQuery(ConnectProcessor.java:206)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.qe.ConnectProcessor.dispatch(ConnectProcessor.java:344)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.qe.ConnectProcessor.processOnce(ConnectProcessor.java:545)
~[palo-fe.jar:3.4.0]
at
org.apache.doris.mysql.nio.ReadListener.lambda$handleEvent$0(ReadListener.java:50)
~[palo-fe.jar:3.4.0]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[?:1.8.0_131]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[?:1.8.0_131]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]
Caused by: com.baidu.jprotobuf.pbrpc.ErrorDataException: A error occurred:
errorCode=2001 errorMessage:Channel inactive error!
at
com.baidu.jprotobuf.pbrpc.client.ProtobufRpcProxy.doWaitCallback(ProtobufRpcProxy.java:625)
~[jprotobuf-rpc-core-3.5.21.jar:?]
at
com.baidu.jprotobuf.pbrpc.client.ProtobufRpcProxy.access$000(ProtobufRpcProxy.java:51)
~[jprotobuf-rpc-core-3.5.21.jar:?]
at
com.baidu.jprotobuf.pbrpc.client.ProtobufRpcProxy$2.get(ProtobufRpcProxy.java:549)
~[jprotobuf-rpc-core-3.5.21.jar:?]
... 12 more
```
We are currently using jprotobuf as the java client of brpc. No suitable
solution has been found for this problem.
brpc already supports grpc client access in the new version, so we decided
to replace jprotobuf with grpc client.
After testing, in high concurrency scenarios, grpc client performance is
stable, and the performance is the same as before.
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