MonikaCat / migrate_script

Migration script from regular table to partition table

This script will do the following steps:

• Rename the transaction table to transaction_old; message table to message_old
• Rename all the related indexes of transaction_old and message_old tables with adding _old tag
• Create new tables with indexes: transaction & message
• Read from transaction_old and insert into transaction and message tables by batch
• For safety reason it does not drop the old tables

How to execute the script

Add .env file:

PGUSER=UserName
PGHOST=HOST
PGPASSWORD=PASSWORD
PGDATABASE=DB_NAME
PGPORT=DB_PORT

Modify settings.js

// How many transaction rows are processed per batch
const BATCH = 5000
// How many block heights for 1 partition
const PARTITION_SIZE = 100000

Verify the schema

• Verify if the schema in utils/create.js is correct.