tpcds-datagen-as-hive-query

Generate TPCDS data using hive query.

Below are are the 2 examples of generating and querying TPCDS data. First one use Hive CLI and 2nd use Beeline. Beeline will give you faster performance.

##How to use with Hive CLI

1. Clone this repo.

   git clone https://github.com/dharmeshkakadia/tpcds-datagen-as-hive-query/ && cd tpcds-datagen-as-hive-query

2. Run TPCDSDataGen.hql with settings.hql file and set the required config variables.

   hive -i settings.hql -f TPCDSDataGen.hql -hiveconf SCALE=10 -hiveconf PARTS=10 -hiveconf LOCATION=/HiveTPCDS/ -hiveconf TPCHBIN=resources 

   Here,

   SCALE is a scale factor for TPCDS. Scale factor 10 roughly generates 10 GB data, Scale factor 1000 generates 1 TB of data and so on.

   PARTS is a number of task to use for datagen (parrellelization). This should be set to the same value as SCALE.

   LOCATION is the directory where the data will be stored on HDFS.

   TPCHBIN is where the resources are found. You can specify specific settings in settings.hql file.

3. Now you can create tables on the generated data.

   hive -i settings.hql -f ddl/createAllExternalTables.hql -hiveconf LOCATION=/HiveTPCDS/ -hiveconf DBNAME=tpcds

   Generate ORC tables and analyze

   hive -i settings.hql -f ddl/createAllORCTables.hql -hiveconf ORCDBNAME=tpcds_orc -hiveconf SOURCE=tpcds
   hive -i settings.hql -f ddl/analyze.hql -hiveconf ORCDBNAME=tpcds_orc 

4. Run the queries !

   hive -database tpcds_orc -i settings.hql -f queries/query12.sql 

##How to use with Beeline CLI

1. Clone this repo.

   buobu
   git clone https://github.com/dharmeshkakadia/tpcds-datagen-as-hive-query/ && cd tpcds-datagen-as-hive-query

2. Upload the resources to DFS.

   hdfs dfs -copyFromLocal resources /tmp

3. Run TPCDSDataGen.hql with settings.hql file and set the required config variables.

   beeline -u "jdbc:hive2://`hostname -f`:10001/;transportMode=http" -n "" -p "" -i settings.hql -f TPCDSDataGen.hql -hiveconf SCALE=100 -hiveconf PARTS=100 -hiveconf LOCATION=/HiveTPCDS/ -hiveconf TPCHBIN=`grep -A 1 "fs.defaultFS" /etc/hadoop/conf/core-site.xml | grep -o "wasb[^<]*"`/tmp/resources  

   Here, 
   

   SCALE is a scale factor for TPCDS. Scale factor 10 roughly generates 10 GB data, Scale factor 1000 generates 1 TB of data and so on.

   PARTS is a number of task to use for datagen (parrellelization). This should be set to the same value as SCALE.

   LOCATION is the directory where the data will be stored on HDFS.

   TPCHBIN is where the resources are found. You can specify specific settings in settings.hql file.

4. Now you can create tables on the generated data.

   beeline -u "jdbc:hive2://`hostname -f`:10001/;transportMode=http" -n "" -p "" -i settings.hql -f ddl/createAllExternalTables.hql -hiveconf LOCATION=/HiveTPCDS/ -hiveconf DBNAME=tpcds

   Generate ORC tables and analyze

   beeline -u "jdbc:hive2://`hostname -f`:10001/;transportMode=http" -n "" -p "" -i settings.hql -f ddl/createAllORCTables.hql -hiveconf ORCDBNAME=tpcds_orc -hiveconf SOURCE=tpcds
   beeline -u "jdbc:hive2://`hostname -f`:10001/;transportMode=http" -n "" -p "" -i settings.hql -f ddl/analyze.hql -hiveconf ORCDBNAME=tpcds_orc 

5. Run the queries !

   beeline -u "jdbc:hive2://`hostname -f`:10001/;transportMode=http" -n "" -p "" -database tpcds_orc -i settings.hql -f queries/query12.sql