### What changes were proposed in this pull request?
Enable `useEnumCaseInsensitive` for openapi-generator.
And then in celeborn server end, the enum will be mapped to celeborn internal WorkerEventType.
### Why are the changes needed?
I met exception when sending worker event with openapi sdk.
```
Exception in thread "main" ApiException{code=400, responseHeaders={Server=[Jetty(9.4.52.v20230823)], Content-Length=[491], Date=[Fri, 20 Sep 2024 23:50:27 GMT], Content-Type=[text/plain]}, responseBody='Cannot deserialize value of type `org.apache.celeborn.rest.v1.model.SendWorkerEventRequest$EventTypeEnum` from String "DecommissionThenIdle": not one of the values accepted for Enum class: [DECOMMISSION_THEN_IDLE, GRACEFUL, NONE, DECOMMISSION, IMMEDIATELY, RECOMMISSION]
at [Source: (org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$UnCloseableInputStream); line: 1, column: 14] (through reference chain: org.apache.celeborn.rest.v1.model.SendWorkerEventRequest["eventType"])'}
at org.apache.celeborn.rest.v1.master.invoker.ApiClient.processResponse(ApiClient.java:913)
at org.apache.celeborn.rest.v1.master.invoker.ApiClient.invokeAPI(ApiClient.java:1000)
at org.apache.celeborn.rest.v1.master.WorkerApi.sendWorkerEvent(WorkerApi.java:378)
at org.apache.celeborn.rest.v1.master.WorkerApi.sendWorkerEvent(WorkerApi.java:334)
at org.example.Main.main(Main.java:22)
```
The testing code to re-produce:
```
package org.example;
import org.apache.celeborn.rest.v1.master.WorkerApi;
import org.apache.celeborn.rest.v1.master.invoker.ApiClient;
import org.apache.celeborn.rest.v1.model.ExcludeWorkerRequest;
import org.apache.celeborn.rest.v1.model.SendWorkerEventRequest;
import org.apache.celeborn.rest.v1.model.WorkerId;
public class Main {
public static void main(String[] args) throws Exception {
String cmUrl = "http://localhost:9098";
WorkerApi workerApi = new WorkerApi(new ApiClient().setBasePath(cmUrl));
workerApi.excludeWorker(new ExcludeWorkerRequest()
.addAddItem(new WorkerId()
.host("localhost")
.rpcPort(1)
.pushPort(2)
.fetchPort(3)
.replicatePort(4)));
workerApi.sendWorkerEvent(new SendWorkerEventRequest()
.addWorkersItem(new WorkerId()
.host("127.0.0.1")
.rpcPort(56116)
.pushPort(56117)
.fetchPort(56119)
.replicatePort(56118))
.eventType(SendWorkerEventRequest.EventTypeEnum.DECOMMISSION_THEN_IDLE));
}
}
```
Seems because for the EventTypeEnum, the name and value not the same and then cause this issue.
Not sure why the UT passed, but the integration testing failed.
For EventTypeEnum, because its value is case sensitive, so we meet this issue.
8734d16638/openapi/openapi-client/src/main/java/org/apache/celeborn/rest/v1/model/SendWorkerEventRequest.java (L47-L83)
Related issue in jersey end I think, https://github.com/eclipse-ee4j/jersey/issues/5288
In this PR, `useEnumCaseInsensitive` is enabled for openapi-generator.
### Does this PR introduce _any_ user-facing change?
No, there is not user facing change and this SDK has not been released yet.
### How was this patch tested?
Existing UT and Integration testing.
<img width="1265" alt="image" src="https://github.com/user-attachments/assets/6a34a0dd-c474-4e8d-b372-19b0fda94972">
Closes#2754 from turboFei/eventTypeEnumMapping.
Authored-by: Wang, Fei <fwang12@ebay.com>
Signed-off-by: mingji <fengmingxiao.fmx@alibaba-inc.com>
1596cffb39