neo4j/neo4j — pull request #2876 by davidegrohmann (2014-08-18 09:14:07+00:00)
Title: Fix races on shutdown in Muninn

The Muninn eviction thread did not anticipate that closing the page cache would
set all the MuninnPage references in the `pages` array to `null`, and so it
could die with a NullPointerException.

It now interprets the precense of a `null` value as a signal to shut down.