Cherry-pick of #16559, #16606 and #16608 #16643

Merged

luotao1 merged 3 commits intoPaddlePaddle:release/1.4from

sfraczek:fix-repeating-passes

Apr 3, 2019

Commits on Apr 2, 2019

fix dataset reading and add support for full dataset (#16559)

Wojciech Uss
authored and
Sylwester Fraczek
committed
fix repeating passes (#16606)

Wojciech Uss
authored and
Sylwester Fraczek
committed
fix preprocess script with processbar, integrity check and logs (#16608)

lidanqing-vv
authored and
Sylwester Fraczek
committed