Zoltan Haindrich created HIVE-19823:
---------------------------------------
Summary: BytesBytesMultiHashMap estimation should account for load
size
Key: HIVE-19823
URL: https://issues.apache.org/jira/browse/HIVE-19823
Project: Hive
Issue Type: Improvement
Reporter: Zoltan Haindrich
Assignee: Zoltan Haindrich
it could happen that the capacity is known beforehand; and the estimated size
of the hashtable is accurate; but still because after some time the element
count violates loadfactor ration a rehash will occur.
this by default could happen with a {{1-loadfactor = 25%}} probability
https://github.com/apache/hive/blob/cfd57348c1ac188e0ba131d5636a62ff7b7c27be/ql/src/java/org/apache/hadoop/hive/ql/exec/persistence/BytesBytesMultiHashMap.java#L176-L187
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
