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https://issues.apache.org/jira/browse/FLINK-8370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16438708#comment-16438708
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ASF GitHub Bot commented on FLINK-8370:
---------------------------------------
Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/5805#discussion_r181583359
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/rest/handler/job/metrics/DoubleAccumulator.java
---
@@ -0,0 +1,257 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.runtime.rest.handler.job.metrics;
+
+/**
+ * An interface for accumulating double values.
+ */
+interface DoubleAccumulator {
--- End diff --
Remembered why I did it this way. We would have to make the entire
`DoubleAccumulator` class public otherwise.
> Port AbstractAggregatingMetricsHandler to RestServerEndpoint
> ------------------------------------------------------------
>
> Key: FLINK-8370
> URL: https://issues.apache.org/jira/browse/FLINK-8370
> Project: Flink
> Issue Type: Sub-task
> Components: REST
> Affects Versions: 1.5.0
> Reporter: Gary Yao
> Assignee: Chesnay Schepler
> Priority: Blocker
> Labels: flip-6
> Fix For: 1.5.0
>
>
> Port subclasses of
> {{org.apache.flink.runtime.rest.handler.legacy.metrics.AbstractAggregatingMetricsHandler}}
> to new FLIP-6 {{RestServerEndpoint}}.
> The following handlers need to be migrated:
> * {{AggregatingJobsMetricsHandler}}
> * {{AggregatingSubtasksMetricsHandler}}
> * {{AggregatingTaskManagersMetricsHandler}}
> New handlers should then be registered in {{WebMonitorEndpoint}}.
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