From: @tangqunzhang
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

From: @wan_xuelei
Reviewed-by: @xchu42
Signed-off-by:

From: @xchu42
Reviewed-by: @ji_chen,@wqtshg
Signed-off-by: @ji_chen

From: @zhangxiaokun9
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

From: @hugo1
Reviewed-by: 
Signed-off-by:

From: @zhangxiaokun9
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

From: @ni100die
Reviewed-by: @xchu42,@ji_chen
Signed-off-by:

From: @li-lei0106
Reviewed-by: @wqtshg,@xchu42
Signed-off-by: @wqtshg

modified:   ge/graph/load/model_manager/model_manager.cc
	modified:   ge/host_kernels/identity_kernel.cc
	modified:   ge/hybrid/model/hybrid_model.h
	modified:   ge/hybrid/model/hybrid_model_builder.cc
	modified:   ge/hybrid/node_executor/task_context.cc

Merge pull request !1173 from 李磊/string

From: @zhou_chao1993
Reviewed-by: @youui
Signed-off-by: