slfan1989 commented on code in PR #6121:
URL: https://github.com/apache/hadoop/pull/6121#discussion_r1340283125
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/rmadmin/FederationRMAdminInterceptor.java:
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@@ -1137,12 +1143,75 @@ private QueryFederationQueuePoliciesResponse
filterPoliciesConfigurationsByQueue
}
}
+ // Step3. To paginate the returned results.
+ return queryFederationQueuePoliciesPagination(federationQueueWeights,
pageSize, currentPage);
+ }
+
+ /**
+ * Filter PoliciesConfigurations, and we paginate Policies within this
method.
+ *
+ * @param policiesConfigurations policy configurations.
+ * @param pageSize Items per page.
+ * @param currentPage The number of pages to be queried.
+ * @return federation queue policies response.
+ * @throws YarnException indicates exceptions from yarn servers.
+ */
+ private QueryFederationQueuePoliciesResponse filterPoliciesConfigurations(
+ Map<String, SubClusterPolicyConfiguration> policiesConfigurations,
+ int pageSize, int currentPage) throws YarnException {
+
+ // Step1. Check the parameters, if the policy list is empty, return empty
directly.
+ if (MapUtils.isEmpty(policiesConfigurations)) {
+ return null;
+ }
+
+ // Step2. Traverse policiesConfigurations and obtain the
FederationQueueWeight list.
+ List<FederationQueueWeight> federationQueueWeights = new ArrayList<>();
+ for (Map.Entry<String, SubClusterPolicyConfiguration> entry :
+ policiesConfigurations.entrySet()) {
+ String queue = entry.getKey();
+ SubClusterPolicyConfiguration policyConf = entry.getValue();
+ if(policyConf == null) {
Review Comment:
Thanks for your suggestion! I will improve this part of the code.
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