Data stax academy

Datastax Academy: What ? Why ? How ?DuyHai DOAN

Cassandra as Infrastructure Technology•  ING (Cassandra as a service)•  Netflix •  Sony Playstation Network •  Microsoft Office 365 •  Ebay (40Tb in a single table …)•  Etc ..

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Cassandra as Infrastructure Technology•  The SMACK stack as an alternative to the Hadoop stack for streaming•  Spark•  Mesos•  Akka•  Cassandra•  Kafka

•  Read @helenaedelson slides here http://goo.gl/cCIE7F


Rich eco-system around Cassandra•  Apache Spark (C* connector)•  Apache Zeppelin (C* interpreter)•  Apache Mesos (https://github.com/mesosphere/cassandra-mesos)•  Apache Kafka (KIP-30)

•  Apache Shiro (C* as cluster session store)•  Hunk, JasperSoft, Pentaho, Tableau ..


Increasing SQL-like features•  CQL DML (SELECT, INSERT, UPDATE, DELETE …)•  CQL DDL CREATE/ALTER/DROP (SCHEMA, TABLE, TYPE, FUNCTION …)•  CQL Credentials

•  CREATE/ALTER/DROP (USER, ROLE) •  GRANT <xxx> PERMISSION ON <resource> TO <user_name>•  REVOKE <xxx> PERMISSION ON <resource> FROM <user_name>


Increasing SQL-like features•  User Defined Functions

CREATE [OR REPLACE] FUNCTION [IF NOT EXISTS] keyspace';'function-name ( <arg-name> <arg-type> )

(CALLED | RETURNS NULL) ON NULL INPUT

RETURNS <type>

LANGUAGE <language>

AS <body>


Increasing SQL-like features•  Materialized Views

CREATE MATERIALIZED VIEW [IF NOT EXISTS] keyspace_name.view_name AS

SELECT column1, column2, ...

FROM keyspace_name.table_name

WHERE column1 IS NOT NULL AND column2 IS NOT NULL ...

PRIMARY KEY(column1, column2, ...)

•  Real time notifications (CDC) CASSANDRA-8844


More powerful search in future•  Apple open-sourced Secondary Index Impl

•  https://github.com/xedin/sasi

CREATE CUSTOM INDEX ON sasi (bio) USING 'org.apache.cassandra.db.index.SSTableAttachedSecondaryIndex'

WITH OPTIONS = {

'analyzer_class': 'org.apache.cassandra.db.index.sasi.analyzer.StandardAnalyzer', 'tokenization_enable_stemming': 'true',

'analyzed': 'true',

'tokenization_normalize_lowercase': 'true', 'tokenization_locale': 'en'

};


More powerful search in future•  Apple open-sourced Secondary Index Impl

•  https://github.com/xedin/sasi

SELECT *

FROM sasi WHERE (created_at > 1442959315018 OR first_name = 'P')

AND age > 26 ALLOW FILTERING;


More powerful search in future•  Limited to 2.0.x branch•  Needs special patch to OSS code•  Support only COMPACT STORAGE table•  Only compatible with Murmur3Partitioner

•  CASSANDRA-10661 to merge to Cassandra 3.0 !!!•  Github issues to support full CQL3 (https://github.com/xedin/sasi/issues/3)


Datastax Gartner reports (Operational DB)


Oct 2013



Oct 2014



Oct 2015

Cassandra Job Trend


Cassandra Job Offers (I’ve received)


Cassandra Job Offers (I’ve received)


Problem ?


•  Lack of Cassandra skills

•  Difficulty to hire Cassandra experts

Solution: https://academy.datastax.com


Self-Paced Courses

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Technical Evangelists


•  On-site help, data-modeling, cluster health check

•  [email protected], @doanduyhai

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