OAK-1806: Benchmark for blob upload and search longevity
Fix concurrency issue with SimpleDataFormat.
Credits to Davide for the patch

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1596127 13f79535-47bb-0310-9956-ffa450edef68
OAK-1806: Benchmark for blob upload and search longevity
Javadoc. Credits to Amit for the patch

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1596128 13f79535-47bb-0310-9956-ffa450edef68