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Apache ZooKeeper 3.7.0 Server Source Code
Apache ZooKeeper is an open-source server which enables highly
reliable distributed coordination.
Apache ZooKeeper Server Source Code files are provided in the source packge (apache-zookeeper-3.7.0.tar.gz). You can download it at Apache ZooKeeper Website.
You can also browse Apache ZooKeeper Server Source Code below:
✍: FYIcenter.com
⏎ org/apache/zookeeper/server/quorum/Vote.java
/* * 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.zookeeper.server.quorum; import org.apache.zookeeper.server.quorum.QuorumPeer.ServerState; public class Vote { public Vote(long id, long zxid) { this.version = 0x0; this.id = id; this.zxid = zxid; this.electionEpoch = -1; this.peerEpoch = -1; this.state = ServerState.LOOKING; } public Vote(long id, long zxid, long peerEpoch) { this.version = 0x0; this.id = id; this.zxid = zxid; this.electionEpoch = -1; this.peerEpoch = peerEpoch; this.state = ServerState.LOOKING; } public Vote(long id, long zxid, long electionEpoch, long peerEpoch) { this.version = 0x0; this.id = id; this.zxid = zxid; this.electionEpoch = electionEpoch; this.peerEpoch = peerEpoch; this.state = ServerState.LOOKING; } public Vote(int version, long id, long zxid, long electionEpoch, long peerEpoch, ServerState state) { this.version = version; this.id = id; this.zxid = zxid; this.electionEpoch = electionEpoch; this.state = state; this.peerEpoch = peerEpoch; } public Vote(long id, long zxid, long electionEpoch, long peerEpoch, ServerState state) { this.id = id; this.zxid = zxid; this.electionEpoch = electionEpoch; this.state = state; this.peerEpoch = peerEpoch; this.version = 0x0; } private final int version; private final long id; private final long zxid; private final long electionEpoch; private final long peerEpoch; public int getVersion() { return version; } public long getId() { return id; } public long getZxid() { return zxid; } public long getElectionEpoch() { return electionEpoch; } public long getPeerEpoch() { return peerEpoch; } public ServerState getState() { return state; } private final ServerState state; @Override public boolean equals(Object o) { if (!(o instanceof Vote)) { return false; } Vote other = (Vote) o; if ((state == ServerState.LOOKING) || (other.state == ServerState.LOOKING)) { return id == other.id && zxid == other.zxid && electionEpoch == other.electionEpoch && peerEpoch == other.peerEpoch; } else { /* * There are two things going on in the logic below: * * 1. skip comparing the zxid and electionEpoch for votes for servers * out of election. * * Need to skip those because they can be inconsistent due to * scenarios described in QuorumPeer.updateElectionVote. * * And given that only one ensemble can be running at a single point * in time and that each epoch is used only once, using only id and * epoch to compare the votes is sufficient. * * {@see https://issues.apache.org/jira/browse/ZOOKEEPER-1805} * * 2. skip comparing peerEpoch if if we're running with mixed ensemble * with (version > 0x0) and without the change (version = 0x0) * introduced in ZOOKEEPER-1732. * * {@see https://issues.apache.org/jira/browse/ZOOKEEPER-1732} * * The server running with and without ZOOKEEPER-1732 will return * different peerEpoch. During rolling upgrades, it's possible * that 2/5 servers are returning epoch 1, while the other 2/5 * are returning epoch 2, the other server need to ignore the * peerEpoch to be able to join it. */ if ((version > 0x0) ^ (other.version > 0x0)) { return id == other.id; } else { return (id == other.id && peerEpoch == other.peerEpoch); } } } @Override public int hashCode() { return (int) (id & zxid); } public String toString() { return "(" + id + ", " + Long.toHexString(zxid) + ", " + Long.toHexString(peerEpoch) + ")"; } }
⏎ org/apache/zookeeper/server/quorum/Vote.java
Or download all of them as a single archive file:
File name: zookeeper-server-3.7.0-fyi.zip File size: 871011 bytes Release date: 2021-05-17 Download
⇒ Apache ZooKeeper 3.7.0 Jute Source Code
⇐ Download Apache ZooKeeper 3.7.0 Source Package
2022-11-16, 25664👍, 0💬
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