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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7654) A method to extrapolate columnStats for partitions of a table
Date Fri, 08 Aug 2014 17:33:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14091001#comment-14091001
] 

Hive QA commented on HIVE-7654:
-------------------------------



{color:red}Overall{color}: -1 at least one tests failed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12660487/HIVE-7654.0.patch

{color:red}ERROR:{color} -1 due to 4 failed/errored test(s), 5871 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_dynpart_sort_opt_vectorization
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_ql_rewrite_gbtoidx
org.apache.hadoop.hive.ql.TestDDLWithRemoteMetastoreSecondNamenode.testCreateTableWithIndexAndPartitionsNonDefaultNameNode
org.apache.hive.jdbc.miniHS2.TestHiveServer2.testConnection
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/230/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/230/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-230/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 4 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12660487

> A method to extrapolate columnStats for partitions of a table
> -------------------------------------------------------------
>
>                 Key: HIVE-7654
>                 URL: https://issues.apache.org/jira/browse/HIVE-7654
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: pengcheng xiong
>            Assignee: pengcheng xiong
>            Priority: Minor
>         Attachments: Extrapolate the Column Status.docx, HIVE-7654.0.patch
>
>
> In a PARTITIONED table, there are many partitions. For example, 
> create table if not exists loc_orc (
>   state string,
>   locid int,
>   zip bigint
> ) partitioned by(year string) stored as orc;
> We assume there are 4 partitions, partition(year='2000'), partition(year='2001'), partition(year='2002')
and partition(year='2003').
> We can use the following command to compute statistics for columns state,locid of partition(year='2001')
> analyze table loc_orc partition(year='2001') compute statistics for columns state,locid;
> We need to know the “aggregated” column status for the whole table loc_orc. However,
we may not have the column status for some partitions, e.g., partition(year='2002') and also
we may not have the column status for some columns, e.g., zip bigint for partition(year='2001')
> We propose a method to extrapolate the missing column status for the partitions.



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