Thanks, Nalinj. From: Nitin Pawar <[email protected]<mailto:[email protected]>> Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: Thursday, November 27, 2014 at 6:05 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Cc: User - Hive <[email protected]<mailto:[email protected]>> Subject: Re: Detailing on how UPDATE is performed in Hive
https://cwiki.apache.org/confluence/display/Hive/Hive+Transactions entire implementation is under jira here https://issues.apache.org/jira/browse/HIVE-5317 On Thu, Nov 27, 2014 at 4:11 PM, unmesha sreeveni <[email protected]<mailto:[email protected]>> wrote: Hi friends Where can I find details on how update is performed in Hive. 1. When an update is performed,whether HDFS will write that block elsewhere with the new value. 2. whether the old block is unallocated and is allowed for further writes. 3. Whether this process create fragmentation ? 4. while creating a partitioned table, and update is performed ,whether the partition is deleted and updated with new value or the entire block is deleted and written once again? where will be the good place to gather these knowlege -- Thanks & Regards Unmesha Sreeveni U.B Hadoop, Bigdata Developer Centre for Cyber Security | Amrita Vishwa Vidyapeetham http://www.unmeshasreeveni.blogspot.in/ -- Nitin Pawar This message, including any attachments, is the property of Sears Holdings Corporation and/or one of its subsidiaries. It is confidential and may contain proprietary or legally privileged information. If you are not the intended recipient, please delete it without reading the contents. Thank you.
