[GitHub] [accumulo] keith-turner commented on pull request #2422: Implementation of Scan Servers.

[GitBox <gi...@apache.org>]

keith-turner commented on pull request #2422:
URL: https://github.com/apache/accumulo/pull/2422#issuecomment-1021542074


   > Modifying the scan server to perform more than one concurrent scan.
   
   When we discussed this, we realized there is an interesting tradeoff between isolation and caching. Running a single concurrent scan per scan server prevents a rouge scan that gobbles up all memory from negatively impacting other scans.  On the other had running multiple concurrent scans per scan server enables scans to benefit from a larger shared cache (which may be useful if tablets are repeatedly scanned using the same scan server).


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