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You're reading from  Apache Kafka 1.0 Cookbook

Product typeBook
Published inDec 2017
Reading LevelIntermediate
PublisherPackt
ISBN-139781787286849
Edition1st Edition
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Authors (2):
Raúl Estrada
Raúl Estrada
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Raúl Estrada

Raúl Estrada has been a programmer since 1996 and a Java developer since 2001. He loves all topics related to computer science. With more than 15 years of experience in high-availability and enterprise software, he has been designing and implementing architectures since 2003. His specialization is in systems integration, and he mainly participates in projects related to the financial sector. He has been an enterprise architect for BEA Systems and Oracle Inc., but he also enjoys web, mobile, and game programming. Raúl is a supporter of free software and enjoys experimenting with new technologies, frameworks, languages, and methods. Raúl is the author of other Packt Publishing titles, such as Fast Data Processing Systems with SMACK and Apache Kafka Cookbook.
Read more about Raúl Estrada

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Using state change log merger


The StateChangeLogMerger tool merges the state change logs from different brokers for easy posterior analysis. It is a tool for merging the log files from several brokers to rebuild a unified history of what happened.

Getting ready

For this recipe, Kafka must be installed, ZooKeeper running, brokers running, and some topics created on it. The topics should have produced some messages. It is better if there are several days' worth of broker information.

How to do it...

From the Kafka installation directory, run this command:

$ bin/kafka-run-class.sh kafka.tools.StateChangeLogMerger --log-regex /tmp/state-change.log* --partitions 0,1,2 --topic source-topic

How it works...

The StateChangeLogMerger command takes the following parameters:

  • --end-time <String: end>: This specifies the latest timestamp of state change entries to be merged in java.text.SimpleDateFormat
  • --logs <String: file1, file2, ...>: This is used to specify a comma-separated list of state change...
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Apache Kafka 1.0 Cookbook
Published in: Dec 2017Publisher: PacktISBN-13: 9781787286849

Authors (2)

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Raúl Estrada

Raúl Estrada has been a programmer since 1996 and a Java developer since 2001. He loves all topics related to computer science. With more than 15 years of experience in high-availability and enterprise software, he has been designing and implementing architectures since 2003. His specialization is in systems integration, and he mainly participates in projects related to the financial sector. He has been an enterprise architect for BEA Systems and Oracle Inc., but he also enjoys web, mobile, and game programming. Raúl is a supporter of free software and enjoys experimenting with new technologies, frameworks, languages, and methods. Raúl is the author of other Packt Publishing titles, such as Fast Data Processing Systems with SMACK and Apache Kafka Cookbook.
Read more about Raúl Estrada