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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 : ... -
配置 Postgres 以允许远程连接
关于此任务 步骤 关于此任务 在部署集群之前，将 Postgres 配置为允许远程连接至关重要。如果您在安装集群之前未执行这些步骤，安装将失败。 步骤 打开 /var/lib/pgsql/9.6/data/pg_hba.conf 并更新为以下内容 # "local" is for Unix domain socket connect... -
Logic
and isEmpty not or cond ifElse allPass anyPass defaultTo both complement either propSatisfies unless when pathSatisfies until and a → b → a | b Added in v0.1.... -
String
match split trim replace toLower toUpper test toString match RegExp → String → [String | Undefined] Parameters rxA regular expression. strThe string to match against... -
Relation
countBy difference differenceWith unionWith union gt gte intersection lt lte max min propEq sortBy countBy (a → String) → [a] → {*} Parameters fnThe function u... -
禁用 SELinux 和 PackageKit 并检查 umask 值
您必须禁用 SELinux 才能使 Ambari 安装程序正常运行。在集群中的每个主机上，输入： setenforce 0 要永久禁用 SELinux，请在 /etc/selinux/config 中设置 SELINUX=disabled 这可确保 SELinux 在您重新启动计算机后不会自行打开。 在运行 RHEL/CentOS ... -
Cassandra
Description Key features Options host [string] keyspace [string] table [String] username [string] password [string] datacenter [String] consistency_level [String] fields [... -
Log In to Apache Ambari
Prerequisites Steps Next Step More Information Prerequisites Ambari Server must be running. To log in to Ambari Web using a web browser: Steps Point your web browser to... -
Assign Slaves and Clients
Steps Next Step The Cluster Install wizard assigns the slave components, such as DataNodes, NodeManagers, and RegionServers, to appropriate hosts in your cluster. It also attemp... -
String
match split trim replace toLower toUpper test toString match RegExp → String → [String | Undefined] Parameters rxA regular expression. strThe string to match against...