Hi @Vidya SK - the Java exam currently consists of a single task, but that is subject to change at any time. ... View more

Hi Vidya, It is really not a big enough instance. The exam uses c3.4xlarge, which is overkill. You should get decent performance somewhere in the middle - maybe try a c3.2xlarge. -Rich ... View more

@Vidya SK here's my tutorial for telnet source and logger sink and additionally hdfs sink. # tested on HDP 2.3.2 Sandbox # Example, single-node Flume configuration using netcat source, memory channel and logger sink # install telnet yum install -y telnet # start flume with this configuration ****************************************************************************** # example.conf: A single-node Flume configuration # Name the components on this agent a1.sources = r1 a1.sinks = k1 a1.channels = c1 # Describe/configure the source a1.sources.r1.type = netcat a1.sources.r1.bind = localhost a1.sources.r1.port = 44444 # Describe the sink a1.sinks.k1.type = logger # Use a channel which buffers events in memory a1.channels.c1.type = memory a1.channels.c1.capacity = 1000 a1.channels.c1.transactionCapacity = 100 # Bind the source and sink to the channel a1.sources.r1.channels = c1 a1.sinks.k1.channel = c1 ****************************************************************************** # in another terminal telnet localhost 44444 # type anything # then in the original terminal tail -f /var/log/flume/flume-a1.log # Exampe netcat source, hdfs sink as DataStream # create hdfs flume directory sudo -u hdfs hdfs dfs -mkdir /flume sudo -u hdfs hdfs dfs -mkdir /flume/events sudo -u hdfs hdfs dfs -chown -R flume:hdfs /flume/events ****************************************************************************** # example.conf: A single-node Flume configuration # Name the components on this agent a1.sources = r1 a1.sinks = k1 a1.channels = c1 # Describe/configure the source a1.sources.r1.type = netcat a1.sources.r1.bind = localhost a1.sources.r1.port = 44444 # Describe the sink a1.sinks.k1.type = hdfs a1.sinks.k1.hdfs.path = /flume/events/%y-%m-%d/%H%M/%S a1.sinks.k1.hdfs.filePrefix = events- a1.sinks.k1.hdfs.round = true a1.sinks.k1.hdfs.roundValue = 10 a1.sinks.k1.hdfs.roundUnit = minute a1.sinks.k1.hdfs.useLocalTimeStamp = true a1.sinks.k1.hdfs.fileType = DataStream # Use a channel which buffers events in memory a1.channels.c1.type = memory a1.channels.c1.capacity = 1000 a1.channels.c1.transactionCapacity = 100 # Bind the source and sink to the channel a1.sources.r1.channels = c1 a1.sinks.k1.channel = c1 ****************************************************************************** # show the output in hdfs sudo -u flume hdfs dfs -ls /flume/events/ sudo -u flume hdfs dfs -ls /flume/events/ sudo -u flume hdfs dfs -cat /flume/events/*/*/*/* ... View more