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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-6901) Explain plan doesn't show operator tree for the fetch operator
Date Mon, 21 Apr 2014 19:48:15 GMT

    [ https://issues.apache.org/jira/browse/HIVE-6901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13975950#comment-13975950
] 

Hive QA commented on HIVE-6901:
-------------------------------



{color:red}Overall{color}: -1 no tests executed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12641106/HIVE-6901.2.patch

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/precommit-hive/17/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/precommit-hive/17/console

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Tests exited with: NullPointerException: driver
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12641106

> Explain plan doesn't show operator tree for the fetch operator
> --------------------------------------------------------------
>
>                 Key: HIVE-6901
>                 URL: https://issues.apache.org/jira/browse/HIVE-6901
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.12.0
>            Reporter: Xuefu Zhang
>            Assignee: Xuefu Zhang
>            Priority: Minor
>         Attachments: HIVE-6901.1.patch, HIVE-6901.2.patch, HIVE-6901.2.patch, HIVE-6901.patch
>
>
> Explaining a simple select query that involves a MR phase doesn't show processor tree
for the fetch operator.
> {code}
> hive> explain select d from test;
> OK
> STAGE DEPENDENCIES:
>   Stage-1 is a root stage
>   Stage-0 is a root stage
> STAGE PLANS:
>   Stage: Stage-1
>     Map Reduce
>       Map Operator Tree:
> ...
>   Stage: Stage-0
>     Fetch Operator
>       limit: -1
> {code}
> It would be nice if the operator tree is shown even if there is only one node.
> Please note that in local execution, the operator tree is complete:
> {code}
> hive> explain select * from test;
> OK
> STAGE DEPENDENCIES:
>   Stage-0 is a root stage
> STAGE PLANS:
>   Stage: Stage-0
>     Fetch Operator
>       limit: -1
>       Processor Tree:
>         TableScan
>           alias: test
>           Statistics: Num rows: 8 Data size: 34 Basic stats: COMPLETE Column stats: NONE
>           Select Operator
>             expressions: d (type: int)
>             outputColumnNames: _col0
>             Statistics: Num rows: 8 Data size: 34 Basic stats: COMPLETE Column stats:
NONE
>             ListSink
> {code}



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