tree cf4a437370cfc53adb0bdd248ceb966a3bb2ad37
parent 4a24a3e06ffbfbeb37a11d482269f9dd5996c913
author HIGUCHI Yuta <y-higuchi@ak.jp.nec.com> 1457752595 -0800
committer Gerrit Code Review <gerrit@onlab.us> 1458755836 +0000

Improve Executors related logging behavior

- Specify Logger for the Executor
- Use Executor#execute instead of ExecutorService#submit for
  fire and forget type of usage.
   Note: submit() will swallow thrown Exception

Change-Id: I507b841dc3feedf4ad20a746c304518d68fb846a