[ https://issues.apache.org/jira/browse/HIVE-2068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Siying Dong updated HIVE-2068: ------------------------------ Status: Patch Available (was: Open) > Speed up query "select xx,xx from xxx LIMIT xxx" if no filtering or > aggregation > ------------------------------------------------------------------------------- > > Key: HIVE-2068 > URL: https://issues.apache.org/jira/browse/HIVE-2068 > Project: Hive > Issue Type: Improvement > Reporter: Siying Dong > Assignee: Siying Dong > Attachments: HIVE-2068.1.patch, HIVE-2068.2.patch, HIVE-2068.3.patch, > HIVE-2068.4.patch > > > Currently, "select xx,xx from xxx where ...(only partition conditions) LIMIT > xxx" will start a MapReduce job with input to be the whole table or > partition. The latency can be huge if the table or partition is big. We could > reduce number of input files to speed up the queries. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira