c34b546d67
## What changes were proposed in this pull request? Rename RDD functions for now to avoid CRAN check warnings. Some RDD functions are sharing generics with DataFrame functions (hence the problem) so after the renames we need to add new generics, for now. ## How was this patch tested? unit tests Author: Felix Cheung <felixcheung_m@hotmail.com> Closes #14626 from felixcheung/rrddfunctions.
93 lines
3.2 KiB
R
93 lines
3.2 KiB
R
#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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context("functions on binary files")
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# JavaSparkContext handle
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sparkSession <- sparkR.session(enableHiveSupport = FALSE)
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sc <- callJStatic("org.apache.spark.sql.api.r.SQLUtils", "getJavaSparkContext", sparkSession)
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mockFile <- c("Spark is pretty.", "Spark is awesome.")
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test_that("saveAsObjectFile()/objectFile() following textFile() works", {
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fileName1 <- tempfile(pattern = "spark-test", fileext = ".tmp")
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fileName2 <- tempfile(pattern = "spark-test", fileext = ".tmp")
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writeLines(mockFile, fileName1)
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rdd <- textFile(sc, fileName1, 1)
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saveAsObjectFile(rdd, fileName2)
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rdd <- objectFile(sc, fileName2)
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expect_equal(collectRDD(rdd), as.list(mockFile))
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unlink(fileName1)
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unlink(fileName2, recursive = TRUE)
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})
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test_that("saveAsObjectFile()/objectFile() works on a parallelized list", {
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fileName <- tempfile(pattern = "spark-test", fileext = ".tmp")
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l <- list(1, 2, 3)
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rdd <- parallelize(sc, l, 1)
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saveAsObjectFile(rdd, fileName)
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rdd <- objectFile(sc, fileName)
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expect_equal(collectRDD(rdd), l)
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unlink(fileName, recursive = TRUE)
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})
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test_that("saveAsObjectFile()/objectFile() following RDD transformations works", {
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fileName1 <- tempfile(pattern = "spark-test", fileext = ".tmp")
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fileName2 <- tempfile(pattern = "spark-test", fileext = ".tmp")
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writeLines(mockFile, fileName1)
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rdd <- textFile(sc, fileName1)
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words <- flatMap(rdd, function(line) { strsplit(line, " ")[[1]] })
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wordCount <- lapply(words, function(word) { list(word, 1L) })
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counts <- reduceByKey(wordCount, "+", 2L)
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saveAsObjectFile(counts, fileName2)
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counts <- objectFile(sc, fileName2)
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output <- collectRDD(counts)
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expected <- list(list("awesome.", 1), list("Spark", 2), list("pretty.", 1),
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list("is", 2))
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expect_equal(sortKeyValueList(output), sortKeyValueList(expected))
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unlink(fileName1)
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unlink(fileName2, recursive = TRUE)
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})
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test_that("saveAsObjectFile()/objectFile() works with multiple paths", {
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fileName1 <- tempfile(pattern = "spark-test", fileext = ".tmp")
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fileName2 <- tempfile(pattern = "spark-test", fileext = ".tmp")
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rdd1 <- parallelize(sc, "Spark is pretty.")
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saveAsObjectFile(rdd1, fileName1)
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rdd2 <- parallelize(sc, "Spark is awesome.")
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saveAsObjectFile(rdd2, fileName2)
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rdd <- objectFile(sc, c(fileName1, fileName2))
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expect_equal(countRDD(rdd), 2)
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unlink(fileName1, recursive = TRUE)
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unlink(fileName2, recursive = TRUE)
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})
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sparkR.session.stop()
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