[HDFS-17552] [ARR] IPC client uses CompletableFuture to support asynchronous operations.

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Labels: pull-request-available
• Assignee: Jian Zhang
• Reporter: Jian Zhang
• Created: 13/Jun/24 16:19
• Updated: 23/Jul/24 15:40
• Resolved: 23/Jul/24 15:40

Description

Description

In the implementation of asynchronous Ipc.client, the main methods used include HADOOP-13226, HDFS-10224, etc.

However, the existing implementation does not support `CompletableFuture`; instead, it relies on setting up callbacks, which can lead to the "callback hell" problem. Using `CompletableFuture` can better organize asynchronous callbacks. Therefore, on the basis of the existing implementation, by using `CompletableFuture`, once the `client.call` is completed, the asynchronous thread handles the response of this call without blocking the main thread.

 

Test

new UT  TestAsyncIPC#testAsyncCallWithCompletableFuture()

Issue Links

• is cloned by: HADOOP-19235 IPC client uses CompletableFuture to support asynchronous operations.
• links to: GitHub Pull Request #6888