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Posted to dev@hive.apache.org by "Phabricator (JIRA)" <ji...@apache.org> on 2013/02/14 07:58:13 UTC

[jira] [Updated] (HIVE-3925) dependencies of fetch task are not shown by explain

     [ https://issues.apache.org/jira/browse/HIVE-3925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Phabricator updated HIVE-3925:
------------------------------

    Attachment: HIVE-3925.D8577.1.patch

navis requested code review of "HIVE-3925 [jira] dependencies of fetch task are not shown by explain".

Reviewers: JIRA

HIVE-3925 dependencies of fetch task are not shown by explain

A simple query like:

hive> explain select * from src order by key;
OK
ABSTRACT SYNTAX TREE:
  (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF)) (TOK_ORDERBY (TOK_TABSORTCOLNAMEASC (TOK_TABLE_OR_COL key)))))

STAGE DEPENDENCIES:
  Stage-1 is a root stage
  Stage-0 is a root stage

  Stage: Stage-0
    Fetch Operator
      limit: -1

Stage-0 is not a root stage and depends on stage-1.

TEST PLAN
  EMPTY

REVISION DETAIL
  https://reviews.facebook.net/D8577

AFFECTED FILES
  ql/src/java/org/apache/hadoop/hive/ql/exec/ExplainTask.java
  ql/src/java/org/apache/hadoop/hive/ql/exec/Task.java
  ql/src/java/org/apache/hadoop/hive/ql/optimizer/GenMRFileSink1.java
  ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java

MANAGE HERALD RULES
  https://reviews.facebook.net/herald/view/differential/

WHY DID I GET THIS EMAIL?
  https://reviews.facebook.net/herald/transcript/20877/

To: JIRA, navis

                
> dependencies of fetch task are not shown by explain
> ---------------------------------------------------
>
>                 Key: HIVE-3925
>                 URL: https://issues.apache.org/jira/browse/HIVE-3925
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Namit Jain
>         Attachments: HIVE-3925.D8577.1.patch
>
>
> A simple query like:
> hive> explain select * from src order by key;
> OK
> ABSTRACT SYNTAX TREE:
>   (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR TOK_ALLCOLREF)) (TOK_ORDERBY (TOK_TABSORTCOLNAMEASC (TOK_TABLE_OR_COL key)))))
> STAGE DEPENDENCIES:
>   Stage-1 is a root stage
>   Stage-0 is a root stage
>   Stage: Stage-0
>     Fetch Operator
>       limit: -1
> Stage-0 is not a root stage and depends on stage-1.

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