issues/DplyrSparklyr_DEVdplyr_CRANsparklyr.md

In WinVector/replyr: Patches to Use 'dplyr' on Remote Data Sources

dplyr and sparklyr

Run DEV version of dplyr and CRAN sparklyr as of 5-14-2017.

# devtools::install_github("tidyverse/dplyr")
# devtools::install_github('tidyverse/dbplyr')
# devtools::install_github('rstudio/sparklyr')
suppressPackageStartupMessages(library('dplyr'))
packageVersion("dplyr")

## [1] '0.5.0.9005'

library('sparklyr')
packageVersion("sparklyr")

## [1] '0.5.4'

if(requireNamespace("dbplyr", quietly = TRUE)) {
  packageVersion("dbplyr")
}

## [1] '0.0.0.9001'

R.Version()$version.string

## [1] "R version 3.4.0 (2017-04-21)"

base::date()

## [1] "Mon May 15 15:10:00 2017"

sc <- sparklyr::spark_connect(version='2.0.2', 
   master = "local")

d1 <- copy_to(sc, data.frame(x=1:3, y=4:6), 'd1',
              overwrite = TRUE)
d2 <- copy_to(sc, data.frame(x=1:3, y=7:9), 'd2',
              overwrite = TRUE)

left_join(d1, d2, by='x')

## Source:     lazy query [?? x 3]
## Database:   spark_connection

## Error: Column `y` must have a unique name

dLocal <- data.frame(x = 1:2,
                     origCol = c('a', 'b'),
                     stringsAsFactors = FALSE)

d <- copy_to(sc, dLocal, 'd',
             overwrite = TRUE)

# local
rename(dLocal, x2 = x, origCol2 = origCol)

##   x2 origCol2
## 1  1        a
## 2  2        b

# Spark
rename(d, x2 = x, origCol2 = origCol)

## Source:     lazy query [?? x 2]
## Database:   spark_connection

## Error in names(select)[match(old_vars, vars)] <- new_vars: NAs are not allowed in subscripted assignments

spark_disconnect(sc)
rm(list=ls())
gc(verbose = FALSE)

##           used (Mb) gc trigger (Mb) max used (Mb)
## Ncells  677545 36.2    1168576 62.5  1168576 62.5
## Vcells 1167395  9.0    2060183 15.8  1420902 10.9

WinVector/replyr documentation built on Oct. 22, 2020, 8:07 p.m.