deleted:    MapReduce_2_2_1_Copy-Phase.md
	deleted:    MapReduce_2_2_2_some-record-in-Copy-Phase.md
	deleted:    MapReduce_2_2_3_GetMapEventThread.md
	deleted:    MapReduce_2_2_4_MapOutputCopier.md
	deleted:    MapReduce_2_2_5_mergeThread.md
	deleted:    MapReduce_2_2_6_fetchOutputs.md
	new file:   MapReduce_2_2_CopyPhase.md
	new file:   ../_image/4.1.CopyPhase.png
	new file:   ../_image/4.2.CopyPhaseRecords.png