When Compaction process runs, it will create base directory. https://cwiki.apache.org/confluence/display/Hive/Hive+Transactions#HiveTransactions-Configuration
at a minimum you need hive.compactor.initiator.on<https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.compactor.initiator.on>=true and hive.compactor.worker.threads<https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.compactor.worker.threads>>0 Also, see https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-AlterTable/PartitionCompact on how to trigger compaction manually. Eugene From: Sanjeev Verma <sanjeev.verm...@gmail.com<mailto:sanjeev.verm...@gmail.com>> Reply-To: "u...@hive.apache.org<mailto:u...@hive.apache.org>" <u...@hive.apache.org<mailto:u...@hive.apache.org>> Date: Thursday, November 12, 2015 at 11:41 PM To: "u...@hive.apache.org<mailto:u...@hive.apache.org>" <u...@hive.apache.org<mailto:u...@hive.apache.org>>, "dev@hive.apache.org<mailto:dev@hive.apache.org>" <dev@hive.apache.org<mailto:dev@hive.apache.org>> Subject: hive transaction strange behaviour I have enable the hive transaction and able to see the delta files created for some of the partition but i dont not see any base file created yet.it<http://yet.it> seems strange to me seeing so many delta files without any base file. Could somebody let me know when Base file created. Thanks