[ALLUXIO-2408] Fix potential journal checkpoint failure#4306

Merged

aaudiber merged 10 commits intoAlluxio:masterfrom aaudiber:journal-checkpoint-failure

Nov 8, 2016

+378-24

Commits on Nov 3, 2016

Commits on Nov 7, 2016

Fix checkstyle
aaudiber
committed

Commits on Nov 8, 2016