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040000 tree d77af00ea4251681dfcab82fa458ace0f4cba4d7	jobcontrol
040000 tree ba259ff9346a0d8cee24442dd6a671277c1e9858	join
040000 tree 71e94987ba2ad1670c2a2fb1189e33ca60dfe4cd	map
040000 tree a28234ae95b153faf9a4c18815bac9f3fc05cacc	output
040000 tree 28b86f5450f090a2849905a225cfc2902c45bff4	partition
040000 tree 2543dec668e1227db5b44fd47299232e8fce5b89	reduce