docs: state one Resource Allowance per region per project limitation on v1alpha

---
docs: A comment for field `max_run_duration` in message `.google.cloud.batch.v1alpha.TaskSpec` and `.google.cloud.batch.v1.TaskSpec` is changed

---
docs: add non-negative restriction comment for usage_resource_allowance.spec.limit.limit exposed on v1alpha
PiperOrigin-RevId: 620950825

google/cloud/batch/v1alpha/batch_v1alpha.yaml

@@ -12,7 +12,7 @@ types:
 - name: google.cloud.batch.v1alpha.OperationMetadata
 
 documentation:
-  summary: An API to manage the running of batch resources on Google Cloud Platform.
+  summary: An API to manage the running of Batch resources on Google Cloud Platform.
   overview: '(include == google/cloud/batch/doc/overview.md ==)'
   rules:
   - selector: google.cloud.location.Locations.GetLocation

google/cloud/batch/v1alpha/batch_v1alpha_grpc_service_config.json

@@ -25,7 +25,8 @@
       { "service": "google.cloud.batch.v1alpha.BatchService", "method": "UpdateJob"},
       { "service": "google.cloud.batch.v1alpha.BatchService", "method": "CreateResourceAllowance" },
       { "service": "google.cloud.batch.v1alpha.BatchService", "method": "DeleteResourceAllowance" },
-      { "service": "google.cloud.batch.v1alpha.BatchService", "method": "UpdateResourceAllowance"}
+      { "service": "google.cloud.batch.v1alpha.BatchService", "method": "UpdateResourceAllowance"},
+      { "service": "google.cloud.batch.v1alpha.BatchService", "method": "CancelTasks"}
     ],
     "timeout": "60s"
   }]

google/cloud/batch/v1alpha/resource_allowance.proto

@@ -70,6 +70,8 @@ enum ResourceAllowanceState {
 }
 
 // The Resource Allowance description for Cloud Batch.
+// Only one Resource Allowance is supported now under a specific location and
+// project.
 message ResourceAllowance {
   option (google.api.resource) = {
     type: "batch.googleapis.com/ResourceAllowance"
@@ -140,10 +142,13 @@ message UsageResourceAllowanceSpec {
     }
 
     // Required. Limit value of a UsageResourceAllowance within its one
-    // duration. Default is 0. For example, you can set `limit` as 10000.0 with
-    // duration of the current month by setting `calendar_period` field as
-    // monthly. That means in your current month, 10000.0 is the cour hour
-    // limitation that your resources are allowed to consume.
+    // duration.
+    //
+    // Limit cannot be a negative value. Default is 0.
+    // For example, you can set `limit` as 10000.0 with duration of the current
+    // month by setting `calendar_period` field as monthly. That means in your
+    // current month, 10000.0 is the core hour limitation that your resources
+    // are allowed to consume.
     optional double limit = 2 [(google.api.field_behavior) = REQUIRED];
   }
 

google/cloud/batch/v1alpha/task.proto

@@ -352,6 +352,8 @@ message TaskSpec {
 
   // Maximum duration the task should run.
   // The task will be killed and marked as FAILED if over this limit.
+  // The valid value range for max_run_duration in seconds is [0,
+  // 315576000000.999999999],
   google.protobuf.Duration max_run_duration = 4;
 
   // Maximum number of retries on failures.