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This article introduces the relevant knowledge of "how to collect data by Source of Flume to output to the console through memory". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Demand:

Flume's Source collects data from NetCat and Exec and outputs it to the console through memory.

Here memory can also be file aggregation, checkpointDir record offset

# Use a channel which buffers events in memoryagent1.channels.channel1.type = fileagent1.channels.channel1.checkpointDir=/var/checkpoint agent1.channels.channel1.dataDirs=/var/tmpagent1.channels.channel1.capacity = 1000agent1.channels.channel1.transactionCapactiy = 100

Here is the memory configuration file:

A1.sources = R1 r2a1.sinks = k1a1.channels = c1a1.sources.r1.channels = c1a1.sources.r1.type = netcata1.sources.r1.bind = 0.0.0.0a1.sources.r1.port = 44444a1.sources.r2.channels = c1a1.sources.r2.type = execa1.sources.r2.command = tail-F / home/hadoop/data/data.log# Describe the sinka1.sinks.k1.type = logger# Use a channel which buffers events in memorya1.channels.c1.type = memorya1.channels. C1.capacity = 1000a1.channels.c1.transactionCapacity = 10 million Bind the source and sink to the channela1.sources.r1.channels = c1a1.sources.r2.channels = c1a1.sinks.k1.channel = C1

Test results:

[hadoop@hadoop001 ~] $telnet localhost 44444Trying:: 1...Connected to localhost.Escape character is'^] '.ZOURC123456789OK [hadoop@hadoop001 data] $echo 123 > > data.log [hadoop@hadoop001 data] $

Console output result:

2018-08-10 20 LoggerSink.java:94 12 SinkRunner-PollingRunner-DefaultSinkProcessor (SinkRunner-PollingRunner-DefaultSinkProcessor) [INFO-org.apache.flume.sink.LoggerSink.process (LoggerSink.java:94)] Event: {headers: {} body: 31 32 33 123} 2018-08-10 20 20 12 Event 32439 (SinkRunner-PollingRunner-DefaultSinkProcessor) [INFO-org.apache.flume.sink.LoggerSink.process (LoggerSink.java:94)] Event: {headers: {} body: 5A 4F 55 52 43 31 32 33 34 35 36 37 38 39 0D ZOURC123456789. } "how the Source of Flume collects data to be output to the console through memory" is introduced here. Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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