From: @chujinjin
Reviewed-by: @kisnwang,@jjfeing
Signed-off-by: @jjfeing

From: @yangzhenzhang
Reviewed-by: @stsuteng,@kisnwang
Signed-off-by: @stsuteng

From: @laiyongqiang
Reviewed-by: 
Signed-off-by:

From: @laiyongqiang
Reviewed-by: @kisnwang
Signed-off-by:

From: @zhengjun10
Reviewed-by: @HilbertDavid,@hangangqiang
Signed-off-by: @HilbertDavid

From: @lichen666
Reviewed-by: 
Signed-off-by:

From: @c_34
Reviewed-by: 
Signed-off-by:

From: @dayschan
Reviewed-by: 
Signed-off-by:

From: @lianliguang
Reviewed-by: @chenfei52
Signed-off-by:

From: @shenwei41
Reviewed-by: @pandoublefeng,@heleiwang
Signed-off-by: @pandoublefeng

From: @zhao_ting_v
Reviewed-by: @kisnwang,@wuxuejian
Signed-off-by: @liangchenghui

From: @yeyunpeng2020
Reviewed-by: @zhang_xue_tong,@hangangqiang
Signed-off-by: @zhang_xue_tong

From: @kisnwang
Reviewed-by: 
Signed-off-by:

From: @laiyongqiang
Reviewed-by: @kisnwang
Signed-off-by:

From: @laiyongqiang
Reviewed-by: @kisnwang,@jjfeing
Signed-off-by: @jjfeing

From: @peilin-wang
Reviewed-by: @nsyca,@robingrosman
Signed-off-by: @robingrosman

From: @xu_anyue
Reviewed-by: 
Signed-off-by:

From: @peixu_ren
Reviewed-by: @zh_qh
Signed-off-by:

From: @yangruoqi713
Reviewed-by: @hangangqiang,@zhanghaibo5,@zhang_xue_tong
Signed-off-by:

From: @liubuyu
Reviewed-by: 
Signed-off-by:

From: @irmo
Reviewed-by: @zh_qh,@chenfei52
Signed-off-by: @zh_qh

From: @gengdongjie
Reviewed-by: @oacjiewen,@c_34
Signed-off-by: @c_34

From: @liuwenhao4
Reviewed-by: @HilbertDavid,@zhanghaibo5,@zhang_xue_tong
Signed-off-by:

From: @wangzhe128
Reviewed-by: @hangangqiang,@hangangqiang,@zhang_xue_tong
Signed-off-by: @hangangqiang

From: @xulei2020
Reviewed-by: @liucunwei,@pandoublefeng
Signed-off-by: @liucunwei

From: @ling_qiao_min
Reviewed-by: @hangangqiang
Signed-off-by:

From: @hfarahat
Reviewed-by: @mikef,@nsyca
Signed-off-by: @nsyca

From: @mahdirahmanihanzaki
Reviewed-by: 
Signed-off-by:

Fix bug in batch getDatasetSize
Add getDatasetSize support for generator_op.cc
Fix header guards of some files

From: @shallydeng
Reviewed-by: @zichun_ye
Signed-off-by:

From: @shallydeng
Reviewed-by: @zichun_ye,@wang_zi_dong
Signed-off-by: @zichun_ye