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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-6901) Explain plan doesn't show operator tree for the fetch operator
Date Tue, 13 May 2014 16:37:15 GMT

     [ https://issues.apache.org/jira/browse/HIVE-6901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Chauhan updated HIVE-6901:
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 0.14.0
           Status: Resolved  (was: Patch Available)

Committed to trunk. Thanks, Xuefu!

> 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
>             Fix For: 0.14.0
>
>         Attachments: HIVE-6109.10.patch, HIVE-6901.1.patch, HIVE-6901.2.patch, HIVE-6901.3.patch,
HIVE-6901.4.patch, HIVE-6901.5.patch, HIVE-6901.6.patch, HIVE-6901.7.patch, HIVE-6901.8.patch,
HIVE-6901.9.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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