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https://issues.apache.org/jira/browse/HIVE-25145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Panagiotis Garefalakis reassigned HIVE-25145:
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Assignee: Panagiotis Garefalakis
> Improve Multi-HashTable EstimatedMemorySize
> -------------------------------------------
>
> Key: HIVE-25145
> URL: https://issues.apache.org/jira/browse/HIVE-25145
> Project: Hive
> Issue Type: Sub-task
> Reporter: Panagiotis Garefalakis
> Assignee: Panagiotis Garefalakis
> Priority: Major
>
> When Multi HashTable is used for parallel HT loading, we calculate the
> estimatedMemorySize as the sum of all HTs.
> However, each of those HTs already adds some constants to memory estimation
> e.g., adding 16KB constant memory for keyBinarySortableDeserializeRead
> This ticket aims to improve the memory estimation for Multi HT
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