interceptors in flume - Wikitechy https://www.wikitechy.com/interview-questions/tag/interceptors-in-flume/ Interview Questions Wed, 15 Sep 2021 05:33:28 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png interceptors in flume - Wikitechy https://www.wikitechy.com/interview-questions/tag/interceptors-in-flume/ 32 32 What is Consolidation in Flume ? https://www.wikitechy.com/interview-questions/apache-flume/what-is-consolidation-in-flume/ https://www.wikitechy.com/interview-questions/apache-flume/what-is-consolidation-in-flume/#respond Sun, 11 Jul 2021 16:16:19 +0000 https://www.wikitechy.com/interview-questions/?p=143

Consolidation in flume

  • Consolidation in flume its collect data from different sources even it’s different flume Agents.
  • Flume source can collect all data flow from different sources and flows through channel and sink. Finally send this data to HDFS or target destination.
What is Consolidation in Flume
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Channels in Flume

  • It stores events; events are delivered to the channel by means of sources operating within the agent.
  • An event remains in the channel until a sink removes it for further transport.
Flume Flow Crop

There are three different built in channels in Flume –

  • MEMORY Channel – Events are study from the source into memory and passed to the sink.
  • JDBC Channel – It stores the events in an embedded Derby database.
  • FILE Channel – It writes the contents to a file on the file system after reading the event from a source. The file is erased only after the contents are successfully delivered to the sink.

MEMORY Channel – It is the fastest channel among the three however has the risk of data loss. The channel that you choose totally depends on the nature of the big data application and the value of each event.

Apche Flume Features
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Steps in Flume configurations

  • Flume can process streaming data. So if it is begun once, there is no stop or end to the process. Asynchronously it can flows information from source to HDFS by agent.
  • First of all agent must know person components how they are associated to load information. So configuration is trigger to load the streaming data.
  • For example consumer key, consumer secret access Token and access Token Secret are key factor to download data.
  • To configure Flume, we have to modify three files namely, flume-env.sh, flumeconf.properties, and bash.rc.
  • Setting the Path/Classpath, in the .bashrc file, set the home folder then the path, and the classpath for Flume as given below,
what-are-the-steps-in-flume-configurations
  • In case you configure the apache flume you have the files are flume-conf.properties.template,flume-env.sh.template,flume-env.ps1.template, and log4j.properties.
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