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Posted to dev@hive.apache.org by "Gang Tim Liu (JIRA)" <ji...@apache.org> on 2013/01/19 03:16:12 UTC
[jira] [Updated] (HIVE-3917) Support fast operation for analyze
command
[ 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 like
1. Number of files
2. Size in Bytes
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
> 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 like
> 1. Number of files
> 2. Size in Bytes
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