Method resetHeadReader

fdbserver/VersionedBTree.actor.cpp:1179–1182

Reset the head reader (this is used only for extent based remap queue after recovering the remap queue contents via fastpath extent reads)

	// Reset the head reader (this is used only for extent based remap queue after recovering the remap
	// queue contents via fastpath extent reads)
	void resetHeadReader() {
		headReader.resetRead();
		debug_printf("FIFOQueue(%s) read cursor reset\n", name.c_str());
	}

	// Fast path extent peekAll (this zooms through the queue reading extents at a time)
	// Output interface is a promise stream and one vector of results per extent found is sent to the promise stream