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Review request for hive. Repository: hive-git Description ------- The issue is that every Hive task has to load its own version of HiveConf. When running with a large number of cores per executor (HoS), there is a significant (~10%) amount of memory wasted due to this duplication. See more: https://issues.apache.org/jira/browse/HIVE-20760 Diffs ----- common/src/java/org/apache/hadoop/hive/common/HiveConfProperties.java PRE-CREATION common/src/java/org/apache/hadoop/hive/conf/HiveConf.java 07d5205bed common/src/test/org/apache/hadoop/hive/conf/TestHiveConfProperties.java PRE-CREATION Diff: https://reviews.apache.org/r/69155/diff/1/ Testing ------- Created unit tests for the new Properties implementation. Tested multiple queries output. Thanks, Barnabas Maidics
