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ASF GitHub Bot commented on STORM-1336: --------------------------------------- Github user jerrypeng commented on a diff in the pull request: https://github.com/apache/storm/pull/1053#discussion_r52072956 --- Diff: storm-core/src/jvm/org/apache/storm/container/cgroup/CgroupCenter.java --- @@ -0,0 +1,232 @@ +/** + * 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.storm.container.cgroup; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.BufferedReader; +import java.io.File; +import java.io.FileReader; +import java.io.IOException; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; + +public class CgroupCenter implements CgroupOperation { + + private static Logger LOG = LoggerFactory.getLogger(CgroupCenter.class); + + private static CgroupCenter instance; + + private CgroupCenter() { + + } + + /** + * Thread unsafe + * + * @return + */ + public synchronized static CgroupCenter getInstance() { + if (instance == null) { + instance = new CgroupCenter(); + } + return CgroupUtils.enabled() ? instance : null; + } + + @Override + public List<Hierarchy> getHierarchies() { + + Map<String, Hierarchy> hierarchies = new HashMap<String, Hierarchy>(); + + try (FileReader reader = new FileReader(Constants.MOUNT_STATUS_FILE); + BufferedReader br = new BufferedReader(reader)) { + String str = null; + while ((str = br.readLine()) != null) { + String[] strSplit = str.split(" "); + if (!strSplit[2].equals("cgroup")) { + continue; + } + String name = strSplit[0]; + String type = strSplit[3]; + String dir = strSplit[1]; + Hierarchy h = hierarchies.get(type); --- End diff -- will remove > Evalute/Port JStorm cgroup support > ---------------------------------- > > Key: STORM-1336 > URL: https://issues.apache.org/jira/browse/STORM-1336 > Project: Apache Storm > Issue Type: New Feature > Components: storm-core > Reporter: Robert Joseph Evans > Assignee: Boyang Jerry Peng > Labels: jstorm-merger > > Supports controlling the upper limit of CPU core usage for a worker using > cgroups > Sounds like a good start, will be nice to integrate it with RAS requests too. -- This message was sent by Atlassian JIRA (v6.3.4#6332)