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https://issues.apache.org/jira/browse/HIVE-3925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13707686#comment-13707686
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Navis commented on HIVE-3925:
-----------------------------
Source patch only. The difference of output files would be huge.
> 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
> Assignee: Navis
> Attachments: HIVE-3925.D8577.1.patch, HIVE-3925.D8577.2.patch,
> HIVE-3925.D8577.3.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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