Fix a bug in rand-read.
Fix a bug in rand-read.

The thread ids aren't set properly for NUMA.

zheng-da/FlashX,icoming/FlashX,zheng-da/FlashX,icoming/FlashGraph,silky/FlashGraph,icoming/FlashGraph,silky/FlashGraph,silky/FlashGraph,icoming/FlashX,zheng-da/FlashX,flashxio/FlashX,icoming/FlashGraph,icoming/FlashX,flashxio/FlashX,flashxio/FlashX,silky/FlashGraph,zheng-da/FlashX,flashxio/FlashX,icoming/FlashGraph,icoming/FlashX,flashxio/FlashX,icoming/FlashGraph,flashxio/FlashX,silky/FlashGraph,zheng-da/FlashX,icoming/FlashX