-sample-data 在 Oracle JDK 官方下载页面 下载 JDK 1.8 当前最新版，本示例中下载的版本为 jdk-8u141-linux- x64.tar.gz 。 解压并根据您的 JDK 部署目录设置环境变量， 编辑 ~/.bashrc 文件，比如： 1. export JAVA_HOME=/home/pingcap/jdk1.8.0_144 2. export PAT PATH=$JAVA_HOME/bin:$PATH 验证 JDK 有效性： 1. $ java -version 2. java version "1.8.0_144" 3. Java(TM) SE Runtime Environment (build 1.8.0_144-b01) 4. Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed 集群已启动，其中一台 TiDB 实例服务 IP 为 192.168.0.2，端口为 4000，用户名为 root, 密 码为空。 TiSpark 快速入门指南 部署信息 环境准备 在 TiDB 实例上安装 JDK 导入样例数据 TiSpark 快速入门指南 - 357 - 本文档使用 书栈(BookStack.CN) 构建 1. cd tidb-ansible/resources/bin/tispark-sample-data

rule: sum(rate(tikv_thread_cpu_seconds_total{name=~"raftstore_.*"}[1m]))by ( �→ instance, name)> 1.6 • Description: The pressure on the Raftstore thread is too high. • Solution: Refer to the solution for a given set {1.6, 1.9, 1.9, 2.0, 2.4, 2.6, 2.7, 2.7, 2.8, 2.9, 3.4, 3.5}, you want to generate 4 buckets. The equal-depth histogram is as follows. It contains 602 four buckets [1.6, 1.9], [2.0, 2.6] environment 11.13.1.2.1 Install JDK on the TiDB instance Download the latest version of JDK 1.8 from Oracle JDK official download page. The version used in the following example is jdk-8u141-linux-x64.tar.gz.

rule: sum(rate(tikv_thread_cpu_seconds_total{name=~"raftstore_.*"}[1m]))by ( �→ instance, name)> 1.6 • Description: The pressure on the Raftstore thread is too high. • Solution: Refer to the solution for a given set {1.6, 1.9, 1.9, 2.0, 2.4, 2.6, 2.7, 2.7, 2.8, 2.9, 3.4, 3.5}, you want to generate 4 buckets. The equal-depth histogram is as follows. It contains 623 four buckets [1.6, 1.9], [2.0, 2.6] environment 11.13.1.2.1 Install JDK on the TiDB instance Download the latest version of JDK 1.8 from Oracle JDK official download page. The version used in the following example is jdk-8u141-linux-x64.tar.gz.

Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher

• 报警规则： sum(rate(tikv_thread_cpu_seconds_total{name=~"raftstore_.*"}[1m]))by (instance, name)> 1.6 • 规则描述： Raftstore 线程压力太大。 • 处理方法： 参考TiKV_channel_full_total 的处理方法。 7.5.3.2.9 TiKV_raft_append_log_duration_secs 算便是借助该直方图来进行。 等深直方图，就是让落入每个桶里的值数量尽量相等。举个例子，比方说对于给定的集合 {1.6, 1.9, 1.9, 2.0, 2.4, 2.6, 2.7, 2.7, 2.8, 2.9, 3.4, 3.5}，并且生成 4 个桶，那么最终的等深直方图就会如下图所示，包含四个桶 [1.6, 1.9]， [2.0, 2.6]，[2.7, 2.8]，[2.9, 3.5]，其桶深均为 3。 14.1.2.1 在 TiDB 实例上安装 JDK 在 Oracle JDK 官方下载页面下载 JDK 1.8 当前最新版，本示例中下载的版本为 jdk-8u141-linux-x64.tar.gz。 解压并根据您的 JDK 部署目录设置环境变量，编辑 ~/.bashrc 文件，比如： export JAVA_HOME=/home/pingcap/jdk1.8.0_144 && export

• 报警规则： sum(rate(tikv_thread_cpu_seconds_total{name=~"raftstore_.*"}[1m]))by (instance, name)> 1.6 • 规则描述： Raftstore 线程压力太大。 • 处理方法： 参考TiKV_channel_full_total 的处理方法。 7.5.3.2.9 TiKV_raft_append_log_duration_secs 算便是借助该直方图来进行。 等深直方图，就是让落入每个桶里的值数量尽量相等。举个例子，比方说对于给定的集合 {1.6, 1.9, 1.9, 2.0, 2.4, 2.6, 2.7, 2.7, 2.8, 2.9, 3.4, 3.5}，并且生成 4 个桶，那么最终的等深直方图就会如下图所示，包含四个桶 [1.6, 1.9]， [2.0, 2.6]，[2.7, 2.8]，[2.9, 3.5]，其桶深均为 3。 14.1.2.1 在 TiDB 实例上安装 JDK 在 Oracle JDK 官方下载页面 下载 JDK 1.8 当前最新版，本示例中下载的版本为 jdk-8u141-linux-x64.tar.gz。 解压并根据您的 JDK 部署目录设置环境变量，编辑 ~/.bashrc 文件，比如： export JAVA_HOME=/home/pingcap/jdk1.8.0_144 && export

Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher

Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher

Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher Prerequisites To complete this tutorial, you need: • Java Development Kit (JDK) 17 or higher. You can choose OpenJDK or Oracle JDK based on your business and personal requirements. • Maven 3.8 or higher