[CCR] Change max_read_request_size default (#35247)

This changes the max_read_request_size default from unlimited to 32MB.

Author: martijnvg

x-pack/plugin/ccr/src/main/java/org/elasticsearch/xpack/ccr/action/TransportResumeFollowAction.java

@@ -52,7 +52,7 @@
 
 public class TransportResumeFollowAction extends HandledTransportAction<ResumeFollowAction.Request, AcknowledgedResponse> {
 
-    static final ByteSizeValue DEFAULT_MAX_READ_REQUEST_SIZE = new ByteSizeValue(Long.MAX_VALUE, ByteSizeUnit.BYTES);
+    static final ByteSizeValue DEFAULT_MAX_READ_REQUEST_SIZE = new ByteSizeValue(32, ByteSizeUnit.MB);
     static final ByteSizeValue DEFAULT_MAX_WRITE_REQUEST_SIZE = new ByteSizeValue(Long.MAX_VALUE, ByteSizeUnit.BYTES);
     private static final TimeValue DEFAULT_MAX_RETRY_DELAY = new TimeValue(500);
     private static final int DEFAULT_MAX_OUTSTANDING_WRITE_REQUESTS = 9;