combine
strategy is specified.drLapply(X, FUN, combine = combDdo(), output = NULL, overwrite = FALSE,
params = NULL, packages = NULL, control = NULL, verbose = TRUE)
localDiskConn
, hdfsConn
). If NULL
(default), output will be overwrite = "backup"
to move the existing output to _bak)fn
(most should be taken care of automatically such that this is rarely necessary to specify)rhwatch
in RHIPE) - see rhipeControl
and localDiskContr
combine
recombine
, drFilter
, drJoin
, combDdo
, combRbind
bySpecies <- divide(iris, by = "Species")
drLapply(bySpecies, function(x) x$Sepal.Width)
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