Created by: dflmingle

忧伤死了，调了半天，最后报个这个 Error: Tensor holds no memory. Call Tensor::mutable_data first. [Hint: holder_ should not be null.] at (/paddle/paddle/fluid/framework/tensor.cc:23) [operator < lookup_table_v2 > error] 实在没头绪了，查issue似乎有别人也报过这个，希望官方注意下吧