[HIVE-16897] repl load does not lead to excessive memory consumption for multiple functions from same binary jar

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0.0
• Component/s: HiveServer2
• Assignee: Anishek Agarwal
• Reporter: Anishek Agarwal
• Created: 14/Jun/17 09:09
• Updated: 03/Apr/18 19:22

Description

as part of function replication we currently keep a separate copy of the binary jar associated with the function ( this should be same on the primary warehouse also since each hdfs jar location given during creation of function will download the resource in a separate resource location thus leading to the same jar being included in class path multiple times)

this will lead to excessive space used to keep all jars in classpath, solve this by identifying the common binary jar ( using checksum from primary on replica) and not creating multiple copies thus preventing excessive memory usage.