Removed recover in shard_io.
Removed recover in shard_io.

taskgraph/taskgraph,plutoshe/taskgraph,fengjingchao/taskgraph,plutoshe/taskgraph,BaiGang/taskgraph,BaiGang/taskgraph,fengjingchao/taskgraph,taskgraph/taskgraph,5kg/taskgraph,dzch/taskgraph,kod3r/taskgraph,kod3r/taskgraph,dzch/taskgraph,5kg/taskgraph