Configure, Start, and Validate Apache Flume

Before you can upgrade Apache Flume, you must have first upgraded your HDP components to the latest version (in this case, 2.4.2). This section assumes that you have already upgraded your components for HDP 2.4.2. If you have not already completed these steps, return to Getting Ready to Upgrade and Upgrade 2.3 Components for instructions on how to upgrade your HDP components to 2.4.2.

Replace your configuration after upgrading. Copy /etc/flume/conf from the template to the conf directory in Flume hosts.

By default, Flume does not start running immediately upon installation. To validate your Flume upgrade, replace your default conf/flume.conf with the provided flume.conf file, restart Flume, and see if the data is flowing by examining the destination.

Use this flume.conf file:

#1. Name the components on this agent
a1.sources = r1 
a1.sinks = k1 
a1.channels = c1

#2.Describe/configure the source
a1.sources.r1.type = seq

#3. Describe the sink
a1.sinks.k1.type = file_roll 
a1.sinks.k1.channel = c1 
a1.sinks.k1.sink.directory = /tmp/flume

#4. Use a channel which buffers events in memory
a1.channels.c1.type = memory

#5. Bind the source and sink to the channel
a1.sources.r1.channels = c1 
a1.sinks.k1.channel = c1

After starting Flume, check /tmp/flume to see if there are any files there. The files should contain simple sequential numbers.
After validating, stop Flume and revert changes to flume.conf to prevent your disk from filling up.

​Configure, Start, and Validate Apache Flume

Configure, Start, and Validate Apache Flume