oracle goldengate and apache kafka a deep dive into real-time data streaming

[email protected] www.rittmanmead.com @rittmanmead

Michael Rainey | Collaborate 16

Oracle GoldenGate and Apache Kafka: A Deep Dive Into Real-Time Data Streaming

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Introduction

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• Michael Rainey - Data Integration Practice Lead - America- Oracle Data Integration expertise - Blog: http://ritt.md/mRainey - Oracle ACE

@mRainey

http://ritt.md/mRainey


About Rittman Mead

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•World’s leading specialist partner for technical excellence, solutions delivery and innovation in Oracle Data Integration, Business Intelligence, Analytics and Big Data

•Providing our customers targeted expertise; we are a company that doesn’t try to do everything… only what we excel at

•70+ consultants worldwide including 1 Oracle ACE Director and 3 Oracle ACEs, offering training courses, global services, and consulting

•Founded on the values of collaboration, learning, integrity and getting things done

Unlock the potential of your organization’s data

•Comprehensive service portfolio designed to support the full lifecycle of any analytics solution

[email protected] www.rittmanmead.com @rittmanmead 4

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Today’s New Data Challenge

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Data Integration Today

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Typical Example - Marketing

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• Financial data stored in RDBMS• Social media data, web logs, Google analytics, etc all in

various formats• Bring it all together for analysis ‣ Marketing campaign effect on sales


Relational Data Replication - Oracle GoldenGate

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Oracle GoldenGate for Big Data (Then)

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Oracle GoldenGate for Big Data (Now)

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Streaming Data - Apache Kafka

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“Publish-subscribe messaging rethought as a distributed commit log”


Streaming Data - Apache Kafka

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Kafka - How is it used?

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• Pure Event Streams• System Metrics• Derived Streams• Hadoop Data Loads / Data Publishing• Application Logs• Database Changes- Log Compaction - Data cleansing


Let’s Jump Right In

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• An example…near and dear to my heartOne single view of the Oracle Data Integrator logs!

- Oracle Data Integrator session logs stored in the repository - ODI Agent logs are text based log files - To see the full picture of your ODI environment, they must be

combined


oracle.com/technetwork/database/bigdata-appliance/downloads

http://www.oracle.com/technetwork/database/bigdata-appliance/downloads/index.html


Oracle GoldenGate for Big Data - we talked about this…

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ODI Agent Logs to Kafka via Logstash

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Extract from the ODI Repository with GoldenGate 12c

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• Prepare the database • Setup GoldenGate for Oracle Database- Install and configure • Setup Manager, Extract and Pump parameter files• Add Extract and Pump process groups• Start!


Prepare the Database for GoldenGate Extract - OGG User

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Prepare the Database for GoldenGate Extract - Logging

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Add Table Supplemental Logging

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GoldenGate Manager Parameter File - Source

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GoldenGate Extract Parameter File

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GoldenGate Pump Parameter File

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Add Extract and Pump Process Groups

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Stream ODI Agent Logs to Kafka via Logstash

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• Application log processing is a standard use for Kafka- Many approaches to extract logs • Logstash- Part of the Elastic (formerly ELK) stack - Robin Moffatt blogged —> http://ritt.md/kafka-elk - Producer configuration for Kafka

http://ritt.md/kafka-elk


Logstash to Kafka - Setup and Startup

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• Startup Zookeeper- Already installed on Big Data Lite • Set Kafka server.properties- Broker ID - Number of partitions - Log retention period - Zookeeper connection • Start Kafka


Setup Logstash Configuration File

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• Configuration File

• Start Logstash


ODI Agent Logs to Kafka!

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• Start the Kafka Console Consumer - delivered with Kafka

• Start the ODI Agent and…messages!


ODI Agent Logs to Kafka!

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GoldenGate Transactions to Kafka

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Oracle GoldenGate for Big Data

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• Kafka one of many handlers- HDFS, HBase, Flume • Pluggable Formatters- Convert trail file transactions to alternate format - Avro, delimited text, JSON, XML • Metadata Provider- Handles mapping of source to target columns that differ in structure/name - Similar to SOURCEDEF file in GoldenGate - Avro or Hive


Oracle GoldenGate for Big Data - Kafka Handler

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• Standard GoldenGate Extract / Pump processes- We just set this up • Replicat parameter file & process group• Kakfa Handler configuration• Kafka Producer properties- Note: Kafka 0.8.2.0 & 0.8.2.1 are certified with GoldenGate

• But, I’ve heard 0.9.0+ works…


GoldenGate and Kafka…Prerequisites

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• Zookeeper & Kafka up and running• Add topic to broker up front vs dynamically• Kafka Handler must have access to broker server• Kafka libraries must match Kafka version


GoldenGate and Kafka…Replicat Parameters

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GoldenGate and Kafka…Kafka Handler Properties

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• Properties allow communication between the GoldenGate adapter and Kafka



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• gg.handlerlist = kafkahandler• gg.handler.kafkahandler.type = kafka• gg.handler.kafkahandler.KafkaProducerConfigFile = kafka_producer.properties• gg.handler.kafkahandler.TopicName = odirepo- Kafka topic name • gg.handler.kafkahandler.format = json- Pluggable Formatter - Avro recommended for Kafka… • gg.handler.kafkahandler.BlockingSend = true|false • gg.handler.kafkahandler.includeTokens = true|false • gg.handler.kafkahandler.mode = tx- Transaction vs Operation mode



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• goldengate.userexit.timestamp = utc• goldengate.userexit.writers = javawriter• javawriter.stats.display = TRUE• javawriter.stats.full = TRUE• gg.log = log4j• gg.log.level = INFO• gg.report.time = 30sec• gg.classpath = dirprm/:/u01/kafka/kafka_2.10-0.8.2.1/libs/*:- Location of the Kafka libraries• javawriter.bootoptions = -Xmx512m -Xms32m -Djava.class.path=ggjava/ggjava.jar


GoldenGate and Kafka…Kafka Producer Configuration

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• Access to the Kafka producer configuration parameters

More on this later


GoldenGate and Kafka…Startup

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• Create a topic in Kakfa

• Add Replicat process group to GoldenGate on target

• Start Kafka console consumer

• Start GoldenGate extract/pump on source, replicat on target


GoldenGate and Kafka Integration Complete!

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Schemas…

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• Schema automatically created - Stored in <ogg_home>/dirdef directory - Based on gg.handler.kafkahandler.format setting


GoldenGate Big Data Adapter Challenges

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• GoldenGate could be a single point of failure - Kafka is a fault-tolerant, distributed system • Source transactions may end up larger than expected - max.request.size • Need for speed?- batch.size - linger.ms


Why GoldenGate with Kafka?

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• GoldenGate…- is non-invasive - has checkpoints for recovery - moves data quickly


In conclusion

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• The new data challenge, not quite as challenging with Kafka- Kafka as the raw data reservoir?


Questions?

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Questions?

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• Websites- kafka.apache.org - rittmanmead.com/blog • Contact- [email protected] - [email protected] • Twitter- @rittmanmead - @apachekafka - @mRainey

oracle goldengate and apache kafka a deep dive into real-time data streaming

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