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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-19113) Bucketing: Make CLUSTERED BY do CLUSTER BY if no explicit sorting is specified
Date Thu, 18 Jul 2019 21:54:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-19113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jesus Camacho Rodriguez updated HIVE-19113:
-------------------------------------------
    Attachment: HIVE-19113.patch

> Bucketing: Make CLUSTERED BY do CLUSTER BY if no explicit sorting is specified
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-19113
>                 URL: https://issues.apache.org/jira/browse/HIVE-19113
>             Project: Hive
>          Issue Type: Improvement
>          Components: Logical Optimizer
>    Affects Versions: 3.0.0
>            Reporter: Gopal V
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>         Attachments: HIVE-19113.patch
>
>
> The user's expectation of 
> "create external table bucketed (key int) clustered by (key) into 4 buckets stored as
orc;"
> is that the table will cluster the key into 4 buckets, while the file layout does not
do any actual clustering of rows.
> In the absence of a "SORTED BY", this can automatically do a "SORTED BY (key)" to cluster
the keys within the file as expected.



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