Set limits for number of opened HTTP connections for Pulsar Admin client

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.


### Motivation

The Pulsar Admin client uses connection pooling (keep alive) without limiting the number of connections.
When HTTP calls get queued up on the brokers for some reason, the client will keep on opening more connections.

### Solution

The AsyncHttpClient used in pulsar-admin-client should be configured to limit the number of connections.
This could happen somewhere here:
https://github.com/apache/pulsar/blob/e3debb9ad867cb9b977e8bb1b21aab66387b3c5d/pulsar-client-admin/src/main/java/org/apache/pulsar/client/admin/internal/http/AsyncHttpConnector.java#L99-L108
`setMaxConnections` and `setMaxConnectionsPerHost` would have to be configured. 
In addition, it would be useful to use `setPooledConnectionIdleTimeout` to set the timeout to 25 seconds so that pooled connections don't exceed timeouts in typical firewall configurations. The default of 60 seconds conflicts with many firewall idle connection defaults.

### Alternatives

_No response_

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

	DefaultAsyncHttpClientConfig.Builder confBuilder = new DefaultAsyncHttpClientConfig.Builder();
	confBuilder.setUseProxyProperties(true);
	confBuilder.setFollowRedirect(true);
	confBuilder.setRequestTimeout(conf.getRequestTimeoutMs());
	confBuilder.setConnectTimeout(connectTimeoutMs);
	confBuilder.setReadTimeout(readTimeoutMs);
	confBuilder.setUserAgent(String.format("Pulsar-Java-v%s", PulsarVersion.getVersion()));
	confBuilder.setRequestTimeout(requestTimeoutMs);
	confBuilder.setIoThreadsCount(conf.getNumIoThreads());
	confBuilder.setKeepAliveStrategy(new DefaultKeepAliveStrategy() {

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Set limits for number of opened HTTP connections for Pulsar Admin client #22041

Search before asking

Motivation

Solution

Alternatives

Anything else?

Are you willing to submit a PR?

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Set limits for number of opened HTTP connections for Pulsar Admin client #22041

Description

Search before asking

Motivation

Solution

Alternatives

Anything else?

Are you willing to submit a PR?

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions