If the static file is retrieved properly, everything goes through the normal flow where the Stream._transmit is invoked and the stream is closed after the data is piped.

However, if there is a cache hit from the browser on the static file, Hapi executes Generic._transmit, and the readStream opened in response/File is never closed. This eventually results in an error that terminates node:
Error: EMFILE, open '/private/tmp/UIaaS/presentation/serving/lib/client/componentPageMixins.js'

I was able to reproduce this with the following combo:
Node v0.10 with Hapi 0.16
Node v0.10 with Hapi 1.0.0 (cloned from master as of yesterday morning)