Hi, Tsuyoshi Ozawa
Sorry for late reply. I've tested ZKFC case, and updated both trunk and branch-2 patches with Zookeeper 3.4.9.
One caveat was that, after Akira Ajisaka +1ed the trunk patch, I've already committed that patch (w/o Zookeeper 3.4.9) into trunk, and then in the middle of committing, received your comments. So this new trunk patch only updates the zookeeper version, and branch-2 patch carries the actual changes in branch-2.
Could you take another look?