[ https://issues.apache.org/jira/browse/HIVE-3917?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gang Tim Liu updated HIVE-3917: ------------------------------- Description: hive supports analyze command to gather statistics from existing tables/partition https://cwiki.apache.org/confluence/display/Hive/StatsDev#StatsDev-ExistingTables It collects: 1. Number of Rows 2. Number of files 3. Size in Bytes If table/partition is big, the operation would take time since it will open all files and scan all data. It would be nice to support fast operation to gather statistics which doesn't require to open all files: 1. Number of files 2. Size in Bytes Potential syntax is ANALYZE TABLE tablename [PARTITION(partcol1[=val1], partcol2[=val2], ...)] COMPUTE STATISTICS [noscan]; was: hive supports analyze command to gather statistics from existing tables/partition https://cwiki.apache.org/confluence/display/Hive/StatsDev#StatsDev-ExistingTables It collects: 1. Number of Rows 2. Number of files 3. Size in Bytes If table/partition is big, the operation would take time since it will open all files and scan all data. It would be nice to support fast operation to gather statistics which doesn't require to open all files like 1. Number of files 2. Size in Bytes Potential syntax is ANALYZE TABLE tablename [PARTITION(partcol1[=val1], partcol2[=val2], ...)] COMPUTE STATISTICS [noscan]; > Support fast operation for analyze command > ------------------------------------------ > > Key: HIVE-3917 > URL: https://issues.apache.org/jira/browse/HIVE-3917 > Project: Hive > Issue Type: Improvement > Components: Statistics > Affects Versions: 0.11.0 > Reporter: Gang Tim Liu > Assignee: Gang Tim Liu > > hive supports analyze command to gather statistics from existing > tables/partition > https://cwiki.apache.org/confluence/display/Hive/StatsDev#StatsDev-ExistingTables > It collects: > 1. Number of Rows > 2. Number of files > 3. Size in Bytes > If table/partition is big, the operation would take time since it will open > all files and scan all data. > It would be nice to support fast operation to gather statistics which doesn't > require to open all files: > 1. Number of files > 2. Size in Bytes > Potential syntax is > ANALYZE TABLE tablename [PARTITION(partcol1[=val1], partcol2[=val2], ...)] > COMPUTE STATISTICS [noscan]; -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira