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From "Reynold Xin (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-18854) getNodeNumbered and generateTreeString are not consistent
Date Thu, 15 Dec 2016 00:15:59 GMT

     [ https://issues.apache.org/jira/browse/SPARK-18854?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Reynold Xin resolved SPARK-18854.
---------------------------------
          Resolution: Fixed
       Fix Version/s: 2.1.0
                      2.0.3
    Target Version/s: 2.0.3, 2.1.0  (was: 2.0.3, 2.1.1, 2.2.0)

> getNodeNumbered and generateTreeString are not consistent
> ---------------------------------------------------------
>
>                 Key: SPARK-18854
>                 URL: https://issues.apache.org/jira/browse/SPARK-18854
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Reynold Xin
>             Fix For: 2.0.3, 2.1.0
>
>
> This is a bug introduced by subquery handling. generateTreeString numbers trees including
innerChildren (used to print subqueries), but getNodeNumbered ignores that. As a result, getNodeNumbered
is not always correct.
> Repro:
> {code}
>     val df = sql("select * from range(10) where id not in " +
>       "(select id from range(2) union all select id from range(2))")
>     println("-------------------------------------------------------")
>     println(df.queryExecution.analyzed.numberedTreeString)
>     println("-------------------------------------------------------")
>     println("-------------------------------------------------------")
>     println(df.queryExecution.analyzed(3))
>     println("-------------------------------------------------------")
> {code}
> Output looks like
> {noformat}
> -------------------------------------------------------
> 00 Project [id#1L]
> 01 +- Filter NOT predicate-subquery#0 [(id#1L = id#2L)]
> 02    :  +- Union
> 03    :     :- Project [id#2L]
> 04    :     :  +- Range (0, 2, step=1, splits=None)
> 05    :     +- Project [id#3L]
> 06    :        +- Range (0, 2, step=1, splits=None)
> 07    +- Range (0, 10, step=1, splits=None)
> -------------------------------------------------------
> -------------------------------------------------------
> null
> -------------------------------------------------------
> {noformat}
> Note that 3 should be the Project node, but getNodeNumbered ignores innerChild and as
a result returns the wrong one.



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