[GitHub] keith-turner opened a new issue #813: Close scan session when not all data is read.

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

keith-turner opened a new issue #813: Close scan session when not all data is read.
URL: https://github.com/apache/accumulo/issues/813
 
 
   If  only some data is read from a scanner and then the scanner is closed then this may leave server side scan sessions open. Normally this does not matter because these scan sessions do not use much memory.  However in the case of an isolated scan then scan session can use a lot of memory.  While working on #797 I had refactored a metadata scan from `Range(x,y)` to `Range(x, null)` and did not read all data.  This resulted in tablet servers dying with an out of memory error.
   
   Currently scanners have a close method that is a noop.  However it would be nice if this close method cleaned up any server side scan sessions.

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