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# Apache ZooKeeper
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Apache ZooKeeper 是一项集中式服务，用于维护配置信息、命名、提供分布式同步和提供组服务。有关的更多信息 ZooKeeper，请参阅 [http://zookeeper.apache.org/](https://zookeeper.apache.org/)。

下表列出了最新版本的 Amazon EMR 7.x 系列中 ZooKeeper 包含的版本，以及 Amazon EMR 随之安装的组件。 ZooKeeper

有关此版本 ZooKeeper 中安装的组件的版本，请参阅 [7.12.0 版组件版本](emr-7120-release.md)。


**ZooKeeper emr-7.12.0 的版本信息**  

| Amazon EMR 发行版标签 | ZooKeeper 版本 | 安装在一起的组件 ZooKeeper | 
| --- | --- | --- | 
| emr-7.12.0 | ZooKeeper 3.9.3-amzn-4 | emrfs, emr-goodies, hadoop-client, hadoop-hdfs-datanode, hadoop-hdfs-library, hadoop-hdfs-namenode, hadoop-hdfs-zkfc, hadoop-httpfs-server, hadoop-kms-server, hadoop-yarn-nodemanager, hadoop-yarn-resourcemanager, hadoop-yarn-timeline-server, zookeeper-client, zookeeper-server | 

下表列出了最新版本的 Amazon EMR 6.x 系列中 ZooKeeper 包含的版本，以及 Amazon EMR 随之安装的组件。 ZooKeeper

有关此版本 ZooKeeper 中安装的组件的版本，请参阅 [6.15.0 版组件版本](emr-6150-release.md)。


**ZooKeeper emr-6.15.0 的版本信息**  

| Amazon EMR 发行版标签 | ZooKeeper 版本 | 安装在一起的组件 ZooKeeper | 
| --- | --- | --- | 
| emr-6.15.0 | ZooKeeper 3.5.10 | emrfs, emr-goodies, hadoop-client, hadoop-hdfs-datanode, hadoop-hdfs-library, hadoop-hdfs-namenode, hadoop-httpfs-server, hadoop-kms-server, hadoop-yarn-nodemanager, hadoop-yarn-resourcemanager, hadoop-yarn-timeline-server, zookeeper-client, zookeeper-server | 

下表列出了最新版本的 Amazon EMR 5.x 系列中 ZooKeeper 包含的版本，以及 Amazon EMR 随之安装的组件。 ZooKeeper

有关此版本 ZooKeeper 中安装的组件的版本，请参阅 [5.36.2 版组件版本](emr-5362-release.md)。


**ZooKeeper emr-5.36.2 的版本信息**  

| Amazon EMR 发行版标签 | ZooKeeper 版本 | 安装在一起的组件 ZooKeeper | 
| --- | --- | --- | 
| emr-5.36.2 | ZooKeeper 3.4.14 | emrfs, emr-goodies, hadoop-client, hadoop-hdfs-datanode, hadoop-hdfs-library, hadoop-hdfs-namenode, hadoop-httpfs-server, hadoop-kms-server, hadoop-yarn-nodemanager, hadoop-yarn-resourcemanager, hadoop-yarn-timeline-server, zookeeper-client, zookeeper-server | 

**Topics**
+ [ZooKeeper 发布历史](ZooKeeper-release-history.md)
+ [ZooKeeper 按版本划分的发行说明](ZooKeeper-release-history-versions.md)