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https://issues.apache.org/jira/browse/HIVE-18910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Deepak Jaiswal updated HIVE-18910:
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Attachment: HIVE-18910.19.patch
> Migrate to Murmur hash for shuffle and bucketing
> ------------------------------------------------
>
> Key: HIVE-18910
> URL: https://issues.apache.org/jira/browse/HIVE-18910
> Project: Hive
> Issue Type: Task
> Reporter: Deepak Jaiswal
> Assignee: Deepak Jaiswal
> Priority: Major
> Attachments: HIVE-18910.1.patch, HIVE-18910.10.patch,
> HIVE-18910.11.patch, HIVE-18910.12.patch, HIVE-18910.13.patch,
> HIVE-18910.14.patch, HIVE-18910.15.patch, HIVE-18910.16.patch,
> HIVE-18910.17.patch, HIVE-18910.18.patch, HIVE-18910.19.patch,
> HIVE-18910.2.patch, HIVE-18910.3.patch, HIVE-18910.4.patch,
> HIVE-18910.5.patch, HIVE-18910.6.patch, HIVE-18910.7.patch,
> HIVE-18910.8.patch, HIVE-18910.9.patch
>
>
> Hive uses JAVA hash which is not as good as murmur for better distribution
> and efficiency in bucketing a table.
> Migrate to murmur hash but still keep backward compatibility for existing
> users so that they dont have to reload the existing tables.
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