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在集群和浏览器主机上启用 NTP
集群中所有节点的时钟以及运行访问 Ambari Web 界面的浏览器的计算机必须能够相互同步。 要安装 NTP 服务并确保其在启动时启动，请在每台主机上运行以下命令： RHEL/CentOS/Oracle 7 yum install - y ntp systemctl enable ntpd SLES zypper install ... -
4.4 Unnumbered sections
Most output formats support an option number_sections , which can be used to enable numbering sections if set to true , e.g., output : html_document : number_sections :... -
Array
_.chunk(array, [size=1]) Since Arguments Returns Example _.compact(array) Since Arguments Returns Example _.concat(array, [values]) Since Arguments Returns Example ... -
Chaining
_(value) Arguments Returns Example _.chain(value) Arguments Returns Example _.tap(value, interceptor) Arguments Returns Example _.prototype.chain() Returns Example _... -
Collect Information
Before deploying a cluster, you should collect the following information: The fully qualified domain name (FQDN) of each host in your system. The Ambari Cluster Install wizard s... -
Gluten
Building(with velox Backend) Build gluten velox backend package Usage Installing Configure Gluten is a Spark plugin developed by Intel, designed to accelerate Apache Spark w... -
Relation
countBy difference differenceWith unionWith union gt gte intersection lt lte max min propEq sortBy pathEq maxBy minBy countBy (a → String) → [a] → {*} Paramet... -
PL/pgSQL Functions
Dynamic Cypher Cypher commands can be run in PL/pgSQL functions without restriction. Data Setup SELECT * FROM cypher ( 'imdb' , $$ CREATE ( toby : actor { name : ... -
JVM 监控
进程级监控 埋点方式 本讲介绍JVM监控相关知识。 进程级监控 Java类的程序，如果只是监控端口存活性，可以直接使用 Categraf 的 net_response 插件，如果只是监控进程存活性，以及进程的CPU、内存等使用率，这个和C的程序、Go的程序没有本质区别，使用 Categraf 的 procstat 插件。 procstat 插... -
Neo4j
Description Key features Options uri [string] username [string] password [string] bearer_token [string] kerberos_ticket [string] database [string] query [string] schema.fi...
