For now, all transactions in HQL are auto-committed without supporting BEGIN, COMMIT, and ROLLBACK, like as with relational databases. Also, the table that has a transaction feature enabled has to be a bucket table with the ORC file format. The following configuration parameters must be set appropriately in hive-site.xml or beeline connection string to turn on transaction support:
> SET hive.support.concurrency = true;> SET hive.enforce.bucketing = true;> SET hive.exec.dynamic.partition.mode = nonstrict;> SET hive.txn.manager = > org.apache.hadoop.hive.ql.lockmgr.DbTxnManager;> SET hive.compactor.initiator.on = true;> SET hive.compactor.worker.threads = 1;
When a transaction is enabled, each transaction-related operation, such ...
