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[Discovery] accumulated improvements to ZenDiscovery
Merging the accumulated work from the feature/improve_zen branch. Here are the highlights of the changes: __Testing infra__ - Networking: - all symmetric partitioning - dropping packets - hard disconnects - Jepsen Tests - Single node service disruptions: - Long GC / Halt - Slow cluster state updates - Discovery settings - Easy to setup unicast with partial host list __Zen Discovery__ - Pinging after master loss (no local elects) - Fixes the split brain issue: elastic#2488 - Batching join requests - More resilient joining process (wait on a publish from master) Closes elastic#7493
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32 changes: 32 additions & 0 deletions
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src/main/java/org/elasticsearch/cluster/ClusterStateNonMasterUpdateTask.java
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/* | ||
* Licensed to Elasticsearch under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch 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. | ||
*/ | ||
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package org.elasticsearch.cluster; | ||
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/** | ||
* This is a marker interface to indicate that the task should be executed | ||
* even if the current node is not a master. | ||
*/ | ||
public abstract class ClusterStateNonMasterUpdateTask extends ClusterStateUpdateTask { | ||
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@Override | ||
public boolean runOnlyOnMaster() { | ||
return false; | ||
} | ||
} |
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31 changes: 31 additions & 0 deletions
31
src/main/java/org/elasticsearch/cluster/ProcessedClusterStateNonMasterUpdateTask.java
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/* | ||
* Licensed to Elasticsearch under one or more contributor | ||
* license agreements. See the NOTICE file distributed with | ||
* this work for additional information regarding copyright | ||
* ownership. Elasticsearch 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.elasticsearch.cluster; | ||
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/** | ||
* A combination between {@link org.elasticsearch.cluster.ProcessedClusterStateUpdateTask} and | ||
* {@link org.elasticsearch.cluster.ClusterStateNonMasterUpdateTask} to allow easy creation of anonymous classes | ||
*/ | ||
abstract public class ProcessedClusterStateNonMasterUpdateTask extends ProcessedClusterStateUpdateTask { | ||
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@Override | ||
public boolean runOnlyOnMaster() { | ||
return false; | ||
} | ||
} |
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