Monday, June 26, 2017

How To Stream JSON Data Into Hive Using Apache Flume

How To Stream JSON Data Into Hive Using Apache Flume

Pre-Requisites of Flume + Hive Project:

hadoop-2.6.0
flume-1.6.0
hive-1.2.1
java-1.7

NOTE: Make sure that install all the above components


Flume + Hive Project Download Links:


`hadoop-2.6.0.tar.gz` ==> link
`apache-flume-1.6.0-bin.tar.gz` ==> link
`apache-hive-1.2.1-src.tar.gz` ==> link
`kalyan-json-hive-agent.conf` ==> link
`bigdata-examples-0.0.1-SNAPSHOT-dependency-jars.jar` ==> link

-----------------------------------------------------------------------------

1. create "kalyan-json-hive-agent.conf" file with below content

agent.sources = EXEC
agent.sinks = HIVE
agent.channels = MemChannel

agent.sources.EXEC.type = exec
agent.sources.EXEC.command = tail -F /tmp/users.json
agent.sources.EXEC.channels = MemChannel

agent.sinks.HIVE.type = hive
agent.sinks.HIVE.hive.metastore = thrift://localhost:9083
agent.sinks.HIVE.hive.database = kalyan
agent.sinks.HIVE.hive.table = users2
agent.sinks.HIVE.serializer = JSON
agent.sinks.HIVE.channel = MemChannel

agent.channels.MemChannel.type = memory
agent.channels.MemChannel.capacity = 1000
agent.channels.MemChannel.transactionCapacity = 100


2. Copy "kalyan-json-hive-agent.conf" file into "$FUME_HOME/conf" folder

3. Copy "bigdata-examples-0.0.1-SNAPSHOT-dependency-jars.jar" file into "$FLUME_HOME/lib" folder

4. Generate Large Amount of Sample JSON data follow this article.

5. Execute Below Command to Generate Sample JSON data with 100 lines. Increase this number to get more data ...

java -cp $FLUME_HOME/lib/bigdata-examples-0.0.1-SNAPSHOT-dependency-jars.jar \
com.orienit.kalyan.examples.GenerateUsers \
-f /tmp/users.json \
-n 100 \
-s 1


















6. Verify the Sample JSON data in Console, using below command

cat /tmp/users.json

















7. To work with Flume + Hive Integration

Follow the below steps


Follow this aritcle to work with below procedure.

Refer: http://kalyanbigdatatraining.blogspot.in/2016/10/how-to-work-with-acid-functionality-in.html


i. update '~/.bashrc' file with below changes

export HIVE_HOME=/home/orienit/work/apache-hive-1.2.1-bin
export PATH=$HIVE_HOME/bin:$PATH

export HCAT_HOME=$HIVE_HOME/hcatalog
export PATH=$HCAT_HOME/bin:$PATH






ii. reopen the Terminal

iii. start the hive using 'hive' command.




iv. list out all the databases in hive using 'show databases;' command




v. create a new database (kalyan) in hive using below command.

create database if not exists kalyan;





vi. use kalyan database using 'use kalyan;' command




vii. list out all the tables in kalyan database using 'show tables;' command.




viii. create 'users2' table in kalyan database using below command.

CREATE TABLE IF NOT EXISTS kalyan.users2 (
  userid BIGINT,
  username STRING,
  password STRING,
  email STRING,
  country STRING,
  state STRING,
  city STRING,
  dt STRING
)
clustered by (userid) into 5 buckets stored as orc;



















ix. Display the data from 'users2' table using below command

select * from users2;



















x. start the hive in external metastore db mode using below command

hive --service metastore




8. Execute the below command to `Extract data from JSON data into Hive using Flume`


$FLUME_HOME/bin/flume-ng agent -n agent --conf $FLUME_HOME/conf -f $FLUME_HOME/conf/kalyan-json-hive-agent.conf -Dflume.root.logger=DEBUG,console

















9. Verify the data in console


















10. Verify the data in Hive 

Execute below command to get the data from hive table 'users2'

select * from users2;




















How To Stream CSV Data Into Hive Using Apache Flume

Pre-Requisites of Flume + Hive Project:

hadoop-2.6.0
flume-1.6.0
hive-1.2.1
java-1.7

NOTE: Make sure that install all the above components


Flume + Hive Project Download Links:


`hadoop-2.6.0.tar.gz` ==> link
`apache-flume-1.6.0-bin.tar.gz` ==> link
`apache-hive-1.2.1-src.tar.gz` ==> link
`kalyan-csv-hive-agent.conf` ==> link
`bigdata-examples-0.0.1-SNAPSHOT-dependency-jars.jar` ==> link

-----------------------------------------------------------------------------

1. create "kalyan-csv-hive-agent.conf" file with below content

agent.sources = EXEC
agent.sinks = HIVE
agent.channels = MemChannel

agent.sources.EXEC.type = exec
agent.sources.EXEC.command = tail -F /tmp/users.csv
agent.sources.EXEC.channels = MemChannel

agent.sinks.HIVE.type = hive
agent.sinks.HIVE.hive.metastore = thrift://localhost:9083
agent.sinks.HIVE.hive.database = kalyan
agent.sinks.HIVE.hive.table = users1
agent.sinks.HIVE.serializer = DELIMITED
agent.sinks.HIVE.serializer.delimiter = ","
agent.sinks.HIVE.serializer.fieldnames=userid,username,password,email,country,state,city,dt
agent.sinks.HIVE.channel = MemChannel

agent.channels.MemChannel.type = memory
agent.channels.MemChannel.capacity = 1000
agent.channels.MemChannel.transactionCapacity = 100


2. Copy "kalyan-csv-hive-agent.conf" file into "$FUME_HOME/conf" folder

3. Copy "bigdata-examples-0.0.1-SNAPSHOT-dependency-jars.jar" file into "$FLUME_HOME/lib" folder

4. Generate Large Amount of Sample CSV data follow this article.

5. Execute Below Command to Generate Sample CSV data with 100 lines. Increase this number to get more data ...

java -cp $FLUME_HOME/lib/bigdata-examples-0.0.1-SNAPSHOT-dependency-jars.jar \
com.orienit.kalyan.examples.GenerateUsers \
-f /tmp/users.csv \
-d ',' \
-n 100 \
-s 1





6. Verify the Sample CSV data in Console, using below command

cat /tmp/users.csv






7. To work with Flume + Hive Integration

Follow the below steps


Follow this aritcle to work with below procedure.

Refer: http://kalyanbigdatatraining.blogspot.in/2016/10/how-to-work-with-acid-functionality-in.html


i. update '~/.bashrc' file with below changes

export HIVE_HOME=/home/orienit/work/apache-hive-1.2.1-bin
export PATH=$HIVE_HOME/bin:$PATH

export HCAT_HOME=$HIVE_HOME/hcatalog
export PATH=$HCAT_HOME/bin:$PATH






ii. reopen the Terminal

iii. start the hive using 'hive' command.




iv. list out all the databases in hive using 'show databases;' command




v. create a new database (kalyan) in hive using below command.

create database if not exists kalyan;





vi. use kalyan database using 'use kalyan;' command




vii. list out all the tables in kalyan database using 'show tables;' command.




viii. create 'users1' table in kalyan database using below command.

CREATE TABLE IF NOT EXISTS kalyan.users1 (
  userid BIGINT,
  username STRING,
  password STRING,
  email STRING,
  country STRING,
  state STRING,
  city STRING,
  dt STRING
)
clustered by (userid) into 5 buckets stored as orc;




ix. Display the data from 'users1' table using below command

select * from users1;




x. start the hive in external metastore db mode using below command


hive --service metastore




8. Execute the below command to `Extract data from CSV data into Hive using Flume`


$FLUME_HOME/bin/flume-ng agent -n agent --conf $FLUME_HOME/conf -f $FLUME_HOME/conf/kalyan-csv-hive-agent.conf -Dflume.root.logger=DEBUG,console





9. Verify the data in console




10. Verify the data in Hive

Execute below command to get the data from hive table 'users1'

select * from users1;



How To Stream JSON Data Into Phoenix Using Apache Flume

Pre-Requisites of Flume Project:

hadoop-2.6.0
flume-1.6.0
hbase-1.1.2
phoenix-4.7.0
java-1.7

NOTE: Make sure that install all the above components


Flume Project Download Links:


`hadoop-2.6.0.tar.gz` ==> link
`apache-flume-1.6.0-bin.tar.gz` ==> link
`hbase-1.1.2-bin.tar.gz` ==> link
`phoenix-4.7.0-HBase-1.1-bin.tar.gz` ==> link
`kalyan-json-phoenix-agent.conf` ==> link
`bigdata-examples-0.0.1-SNAPSHOT-dependency-jars.jar` ==> link
`phoenix-flume-4.7.0-HBase-1.1.jar` ==> link
`json-path-2.2.0.jar` ==> link
`commons-io-2.4.jar` ==> link

-----------------------------------------------------------------------------

1. create "kalyan-json-phoenix-agent.conf" file with below content

agent.sources = EXEC
agent.channels = MemChannel
agent.sinks = PHOENIX

agent.sources.EXEC.type = exec
agent.sources.EXEC.command = tail -F /tmp/users.json
agent.sources.EXEC.channels = MemChannel

agent.sinks.PHOENIX.type = org.apache.phoenix.flume.sink.PhoenixSink
agent.sinks.PHOENIX.batchSize = 10
agent.sinks.PHOENIX.zookeeperQuorum = localhost
agent.sinks.PHOENIX.table = users2
agent.sinks.PHOENIX.ddl = CREATE TABLE IF NOT EXISTS users2 (userid BIGINT NOT NULL, username VARCHAR, password VARCHAR, email VARCHAR, country VARCHAR, state VARCHAR, city VARCHAR, dt VARCHAR NOT NULL CONSTRAINT PK PRIMARY KEY (userid, dt))
agent.sinks.PHOENIX.serializer = json
agent.sinks.PHOENIX.serializer.columnsMapping = {"userid":"userid", "username":"username", "password":"password", "email":"email", "country":"country", "state":"state", "city":"city", "dt":"dt"}
agent.sinks.PHOENIX.serializer.partialSchema = true
agent.sinks.PHOENIX.serializer.columns = userid,username,password,email,country,state,city,dt
agent.sinks.PHOENIX.channel = MemChannel

agent.channels.MemChannel.type = memory
agent.channels.MemChannel.capacity = 1000
agent.channels.MemChannel.transactionCapacity = 100

2. Copy "kalyan-json-phoenix-agent.conf" file into "$FUME_HOME/conf" folder

3. Copy "phoenix-flume-4.7.0-HBase-1.1.jar, json-path-2.2.0.jar, commons-io-2.4.jar and bigdata-examples-0.0.1-SNAPSHOT-dependency-jars.jar" files into"$FLUME_HOME/lib" folder

4. Generate Large Amount of Sample JSON data follow this article.

5. Execute Below Command to Generate Sample JSON data with 100 lines. Increase this number to get more data ...

java -cp $FLUME_HOME/lib/bigdata-examples-0.0.1-SNAPSHOT-dependency-jars.jar \
com.orienit.kalyan.examples.GenerateUsers \
-f /tmp/users.json \
-n 100 \
-s 1





6. Verify the Sample JSON data in Console, using below command

cat /tmp/users.json





7. To work with Flume + Phoenix Integration


Follow the below steps


i. start the hbase using below 'start-hbase.sh' command.



ii. verify the hbase is running or not with "jps" command




iii. Start the phoenix using below 'sqlline.py localhost' command.



iv. list out all the tables in phoenix using '!tables' command




8. Execute the below command to `Extract data from JSON data into Phoenix using Flume`

$FLUME_HOME/bin/flume-ng agent -n agent --conf $FLUME_HOME/conf -f $FLUME_HOME/conf/kalyan-json-phoenix-agent.conf -Dflume.root.logger=DEBUG,console




9. Verify the data in console




10. Verify the data in Phoenix

Execute below command to get the data from phoenix table 'users2'

!tables

select count(*) from users2;

select * from users2;






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