[ACCUMULO-3934] Improve documentation about multiple calls to iterator() sharing threads on single BatchScanner

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.6.4, 1.7.1, 1.8.0
• Component/s: client, docs
• Assignee: Josh Elser
• Reporter: Josh Elser
• Created: 07/Jul/15 17:14
• Updated: 18/Jul/15 00:08
• Resolved: 08/Jul/15 02:40

Description

After digging into ACCUMULO-3931, ecn realized that multiple calls to iterator() on a BatchScanner would all be sharing threads on the same ThreadPool which would ultimately lead to starvation.

Add some documentation to try to make it clear that multiple calls to iterator() on a BatchScanner will share the same ThreadPool.