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 <unmeshab...@gmail.com> 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
