[ https://issues.apache.org/jira/browse/HIVE-2219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sohan Jain reassigned HIVE-2219: -------------------------------- Assignee: Sohan Jain > Make "alter table drop partition" more efficient > ------------------------------------------------ > > Key: HIVE-2219 > URL: https://issues.apache.org/jira/browse/HIVE-2219 > Project: Hive > Issue Type: Improvement > Components: Query Processor > Reporter: Sohan Jain > Assignee: Sohan Jain > > The current function dropTable() that handles dropping multiple partitions is > somewhat inefficient. For each partition you want to drop, it loops through > each partition in the table to see if the partition exists. This is an > _O(mn)_ operation, where _m_ is the number of partitions to drop, and _n_ is > the number of partitions in the table. The running time of this function can > be improved, which is useful for tables with many partitions. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira