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Data stax academy
- 2. 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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- 3. 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
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- 4. 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 ..
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- 5. 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>
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- 6. 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>
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- 7. 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
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- 8. 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'
};
© 2015 DataStax, All Rights Reserved.
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- 9. 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;
© 2015 DataStax, All Rights Reserved.
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- 10. 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)
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- 17. Problem ?
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• Lack of Cassandra skills
• Difficulty to hire Cassandra experts
- 22. Technical Evangelists
22
© 2015 DataStax, All Rights Reserved.
• On-site help, data-modeling, cluster health check
• duy_hai.doan@datastax.com, @doanduyhai
FREE
- 23. From Devs & Ops perspective
23
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