[SOLR-12312] Replication's IndexFetcher buf size can be initialized smarter to not waste RAM/GC

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 7.4
• Component/s: replication (java)
• Assignee: David Smiley
• Reporter: David Smiley
• Created: 04/May/18 18:00
• Updated: 08/Jun/19 15:14
• Resolved: 07/May/18 19:15

Description

IndexFetcher's constructor knows the size of the file it's going to transfer.  As-such, it ought to initialize the "buf" field to no larger than this size.  This has been shown to waste Java heap/GC in  an environment with lots of cores of small indexes and thus small files.

Issue Links

• links to: GitHub Pull Request #370