HBase shell commands

describe ‘tablename’ : Displays the metadata of particular table Example : describe ’employee’  {NAME => ‘address’, BLOOMFILTER => ‘ROW’, VERSIONS => ‘5’, IN_MEMORY => ‘false’, KEEP_DELETED_CELLS => ‘FALSE’, DATA_BLOCK_ENCODING => ‘NONE’, TTL => ‘FOREVER’, COMPRESSION => ‘GZ’, MIN_VERSIONS => ‘0’, BLOCKCACHE => ‘true’, BLOCKSIZE => ‘65536’, REPLICATION_SCOPE => ‘0’} {NAME => ‘personal_info’, BLOOMFILTER => ‘ROW’, … More HBase shell commands

Elasticsearch – Aggregation

Elasticsearch Aggregation provides capability similar to RDBMS group by opeartor. Facets provide a great way to aggregate data within a document set context. This context is defined by the executed query in combination with the different levels of filters that can be defined (filtered queries, top-level filters, and facet level filters). While powerful, their implementation … More Elasticsearch – Aggregation

Using nginx to provide authentication to Elasticsearch / Kibana

Friends authentication & authorization is always an important requirement for development of any application. In this post i am going to show you how to provide authentication to elasticsearch / kibana using Nginx server. Steps are given below: 1. Install the nginx server You can follow below given link for reference. https://www.digitalocean.com/community/tutorials/how-to-install-nginx-on-ubuntu-14-04-lts 2. Create the … More Using nginx to provide authentication to Elasticsearch / Kibana