To create ACID tables in Hive, you need to follow these steps:
- Enable ACID transactions in Hive by setting the following configuration properties in hive-site.xml file:
hive.support.concurrency=true;
hive.enforce.bucketing=true;
hive.exec.dynamic.partition.mode=nonstrict;
hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager;
2. Create an ACID table in Hive:
Note that when you perform updates or deletes on an ACID table, Hive creates a new version of the data, rather than modifying the existing data. This ensures that the table remains transactional and that you can roll back changes if necessary.
Overall, ACID transactions in Hive provide a powerful way to manage data in a distributed environment and ensure that data remains consistent and reliable.