BUG #14125: when master set tablespace,slave recovery xlog pending

The following bug has been logged on the website:

Bug reference: 14125
Logged by: YongWang
Email address: wangyong20009109(at)163(dot)com
PostgreSQL version: 9.4.5
Operating system: Red Hat 4.8.2-16
Description:

when master alter database set tablespace,the slave(async replication)
recovery xlog is pending,the slave normal receiver xlog.

slave ps -ef|grep postgres:
postgres 25636 1 0 Apr26 ? 00:00:09 /pgdir/pg9.4.5/bin/postgres
-D /pgdata
postgres 25741 25636 0 Apr26 ? 00:00:00 postgres: logger process

postgres 25742 25636 6 Apr26 ? 13:30:41 postgres: startup process
recovering 000000010000019E00000035
postgres 25768 25636 0 Apr26 ? 01:45:15 postgres: checkpointer
process
postgres 25769 25636 0 Apr26 ? 00:27:00 postgres: writer process

postgres 25854 25636 0 Apr26 ? 00:01:41 postgres: stats collector
process
postgres 26868 25636 0 Apr26 ? 00:41:54 postgres: wal receiver
process streaming 1A0/938B17D0