[SOLR-6500] Refactor FileFetcher in SnapPuller, add debug logging

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 5.0, 6.0
• Component/s: replication (java), SolrCloud
• Assignee: Mark Miller
• Reporter: Ramkumar Aiyengar
• Created: 10/Sep/14 09:13
• Updated: 09/May/16 18:49
• Resolved: 07/Mar/15 11:15

Description

I was debugging some replication slowness and felt the need for some debug statements in this code path, which then pointed me to a lot of repeated code between local fs and directory file fetching logic in SnapPuller (for which there was a TODO as well), so went ahead and refactored that as well.