Panagiotis Garefalakis created HIVE-25145:
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Summary: 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
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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