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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/09/14 19:56:00 UTC
[jira] [Work logged] (HIVE-22200) Hash collision may cause column
resolution to fail
[ https://issues.apache.org/jira/browse/HIVE-22200?focusedWorklogId=312588&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-312588 ]
ASF GitHub Bot logged work on HIVE-22200:
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Author: ASF GitHub Bot
Created on: 14/Sep/19 19:55
Start Date: 14/Sep/19 19:55
Worklog Time Spent: 10m
Work Description: jcamachor commented on pull request #775: HIVE-22200
URL: https://github.com/apache/hive/pull/775
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Issue Time Tracking
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Worklog Id: (was: 312588)
Remaining Estimate: 0h
Time Spent: 10m
> Hash collision may cause column resolution to fail
> --------------------------------------------------
>
> Key: HIVE-22200
> URL: https://issues.apache.org/jira/browse/HIVE-22200
> Project: Hive
> Issue Type: Bug
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Critical
> Labels: pull-request-available
> Attachments: HIVE-22200.01.patch, HIVE-22200.patch, HIVE-22200.patch, HIVE-22200.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> {{ExprNodeDescUtils.getExprNodeColumnDesc}} extracts the {{ExprNodeColumnDesc}} (column descriptors) from an expression. In fact, it creates a map from hash to the object itself. If same hash value is generated for two different objects, this will result in a clash in the map and some expressions not being part of its values.
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