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https://issues.apache.org/jira/browse/HIVE-19113?focusedWorklogId=280737&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-280737
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ASF GitHub Bot logged work on HIVE-19113:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 23/Jul/19 01:07
Start Date: 23/Jul/19 01:07
Worklog Time Spent: 10m
Work Description: t3rmin4t0r commented on pull request #731: HIVE-19113
URL: https://github.com/apache/hive/pull/731#discussion_r306092544
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File path:
ql/src/test/results/clientpositive/llap/dynamic_semijoin_reduction_3.q.out
##########
@@ -582,7 +584,7 @@ STAGE PLANS:
Reducer 4 <- Reducer 3 (SIMPLE_EDGE)
Reducer 5 <- Reducer 3 (SIMPLE_EDGE)
Reducer 6 <- Reducer 3 (SIMPLE_EDGE)
- Reducer 7 <- Reducer 3 (CUSTOM_SIMPLE_EDGE)
Review comment:
Interesting switch here - suspicious 1:1, because the hash function for
regular group-by != hash function for bucketing, needs attention
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Issue Time Tracking
-------------------
Worklog Id: (was: 280737)
Time Spent: 0.5h (was: 20m)
> 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
> Labels: pull-request-available
> Attachments: HIVE-19113.01.patch, HIVE-19113.patch
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> 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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