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1. Getting Ready
This section describes the information and materials you should get ready to install a cluster using Ambari. Ambari provides an end-to-end management and monitoring solution for y... -
Check DNS and NSCD
All hosts in your system must be configured for both forward and and reverse DNS. If you are unable to configure DNS in this way, you should edit the /etc/hosts file on every hos... -
Kudu
Support Kudu Version Support Those Engines Key features Description Data Type Mapping Source Options Task Example Simple: Multiple Table Changelog 2.2.0-beta 2022-09-26 N... -
Object
clone values eqProps keys omit pick pickAll project prop props keysIn path valuesIn toPairs toPairsIn propOr has hasIn assoc assocPath lens pickBy evolve inv... -
Memory Requirements
The Ambari host should have at least 1 GB RAM, with 500 MB free. To check available memory on any host, run: free - m If you plan to install the Ambari Metrics Service (AMS... -
Install Postgres
Before You Begin Steps Before You Begin If you have already installed a MySQL database, you may skip these steps. You must install Postgres 9.5 or later for SAM and Schema Re... -
Aggregation
Introduction Data Setup Auto Group By Sorting on aggregate functions Distinct aggregation Ambiguous Grouping Statements Invalid Query in AGE Valid Query in AGE Vertices and ... -
Delta Lake
Delta Lake Integration Dependencies Configurations Delta Lake Operations Delta lake is an open-source project that enables building a Lakehouse Architecture on top of existing... -
Relation
countBy difference differenceWith unionWith union gt gte intersection lt lte max min propEq sortBy pathEq maxBy minBy equals identical eqBy clamp countBy (a... -
5.3 Control the width of text output
Sometimes the text output printed from R code may be too wide. If the output document has a fixed page width (e.g., PDF documents), the text output may exceed the page margins. Se...