Flume: compile source code and install
1. download source code#git clone https://git-wip-us.apache.org/repos/asf/flume.git
2. compile
#export MAVEN_OPTS="-Xms512m -Xmx1024m -XX:PermSize=256m -XX:MaxPermSize=512m"
#mvn clean install -DskipTests
an error comes
see:
https://issues.apache.org/jira/browse/FLUME-2184
solution:
#mvn clean install -Dhadoop.profile=2 -DskipTests
#mvn clean install -Dhadoop.profile=2 -DskipTests -Dmaven.test.skip=true
the last para will compile test classes.(In some situtation, test clasess have some errors)
If you want to change the hadoop version, alter the pom.xml
<hadoop2.version>2.6.0</hadoop2.version>
3.run
#cd flume-ng-dist/target/apache-flume-1.6.0-SNAPSHOT-bin
#cp conf/flume-conf.properties.template conf/flume.conf
#cp conf/flume-env.sh.template conf/flume-env.sh
Copy and paste this into conf/flume.conf:
# Define a memory channel called ch1 on agent1
agent1.channels.ch1.type = memory
# Define an Avro source called avro-source1 on agent1 and tell it
# to bind to 0.0.0.0:41414. Connect it to channel ch1.
agent1.sources.avro-source1.channels = ch1
agent1.sources.avro-source1.type = avro
agent1.sources.avro-source1.bind = 0.0.0.0
agent1.sources.avro-source1.port = 41414
# Define a logger sink that simply logs all events it receives
# and connect it to the other end of the same channel.
agent1.sinks.log-sink1.channel = ch1
agent1.sinks.log-sink1.type = logger
# Finally, now that we've defined all of our components, tell
# agent1 which ones we want to activate.
agent1.channels = ch1
agent1.sources = avro-source1
agent1.sinks = log-sink1
#bin/flume-ng agent --conf ./conf/ -f conf/flume.conf
-Dflume.root.logger=DEBUG,console -n agent1
#bin/flume-ng avro-client --conf conf -H localhost -p 41414 -F /etc/passwd -Dflume.root.logger=DEBUG,console
Error: the avro-client can't work(not read file and sent data to avro souce). when i shutdown the flume agent in other console, the avro-client has a error shows
2014-12-31 11:33:30,865 DEBUG - Remote peer dmining05/127.0.0.1:41414 closed connection.
2014-12-31 11:33:30,865 DEBUG - Disconnecting from dmining05/127.0.0.1:41414
Exception in thread "main" java.lang.NoSuchMethodError: org.apache.avro.specific.SpecificData.getClassLoader()Ljava/lang/ClassLoader;
at org.apache.avro.ipc.specific.SpecificRequestor.getClient(SpecificRequestor.java:158)
at org.apache.avro.ipc.specific.SpecificRequestor.getClient(SpecificRequestor.java:148)
at org.apache.flume.api.NettyAvroRpcClient.connect(NettyAvroRpcClient.java:171)
at org.apache.flume.api.NettyAvroRpcClient.connect(NettyAvroRpcClient.java:121)
at org.apache.flume.api.NettyAvroRpcClient.configure(NettyAvroRpcClient.java:638)
at org.apache.flume.api.RpcClientFactory.getDefaultInstance(RpcClientFactory.java:170)
at org.apache.flume.client.avro.AvroCLIClient.run(AvroCLIClient.java:198)
at org.apache.flume.client.avro.AvroCLIClient.main(AvroCLIClient.java:72)
Solution: the reason is that avro version, replace avro-1.7.4.jar avro-ipc-1.7.4.jar avro-mapred-1.7.4.jar in lib dir using avro-1.7.7.jar avro-ipc-1.7.7.jar avro-mapred-1.7.7.jar
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Setting up Eclipse
mvn eclipse:eclipse -DdownloadSources -DdownloadJavadocs
Once this command completes successfully, you must add $HOME/.m2/repository to the classpath in preferences and then you can import all the flume modules as interdependent projects into Eclipse by going to File > Import > General > Existing Projects into Workspace.
References
https://cwiki.apache.org/confluence/display/FLUME/Getting+Started
https://cwiki.apache.org/confluence/display/FLUME/Development+Environment
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