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Posted to dev@hive.apache.org by "Ashutosh Chauhan (JIRA)" <ji...@apache.org> on 2014/07/14 19:04:06 UTC
[jira] [Updated] (HIVE-7213) COUNT(*) returns out-dated count value
after TRUNCATE
[ https://issues.apache.org/jira/browse/HIVE-7213?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ashutosh Chauhan updated HIVE-7213:
-----------------------------------
Summary: COUNT(*) returns out-dated count value after TRUNCATE (was: COUNT(*) returns out-dated count value after TRUNCATE or INSERT INTO)
> COUNT(*) returns out-dated count value after TRUNCATE
> -----------------------------------------------------
>
> Key: HIVE-7213
> URL: https://issues.apache.org/jira/browse/HIVE-7213
> Project: Hive
> Issue Type: Bug
> Components: Query Processor, Statistics
> Affects Versions: 0.13.0
> Environment: HDP 2.1
> Windows Server 2012 64-bit
> Reporter: Moustafa Aboul Atta
> Assignee: Ashutosh Chauhan
> Fix For: 0.14.0
>
> Attachments: HIVE-7213.patch
>
>
> Running a query to count number of rows in a table through
> {{SELECT COUNT( * ) FROM t}}
> always returns the last number of rows added through the following statement:
> {{INSERT INTO TABLE t SELECT r FROM t2}}
> However, running
> {{SELECT * FROM t}}
> returns the expected results i.e. the old and newly added rows.
> Also running
> {{TRUNCATE TABLE t;}}
> returns the original count of rows in the table, however running
> {{SELECT * FROM t;}}
> returns nothing as expected
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