diff options
Diffstat (limited to 'R/pkg/inst/worker/worker.R')
-rw-r--r-- | R/pkg/inst/worker/worker.R | 59 |
1 files changed, 54 insertions, 5 deletions
diff --git a/R/pkg/inst/worker/worker.R b/R/pkg/inst/worker/worker.R index c6542928e8..014bf7bd7b 100644 --- a/R/pkg/inst/worker/worker.R +++ b/R/pkg/inst/worker/worker.R @@ -17,6 +17,23 @@ # Worker class +# Get current system time +currentTimeSecs <- function() { + as.numeric(Sys.time()) +} + +# Get elapsed time +elapsedSecs <- function() { + proc.time()[3] +} + +# Constants +specialLengths <- list(END_OF_STERAM = 0L, TIMING_DATA = -1L) + +# Timing R process boot +bootTime <- currentTimeSecs() +bootElap <- elapsedSecs() + rLibDir <- Sys.getenv("SPARKR_RLIBDIR") # Set libPaths to include SparkR package as loadNamespace needs this # TODO: Figure out if we can avoid this by not loading any objects that require @@ -37,7 +54,7 @@ serializer <- SparkR:::readString(inputCon) # Include packages as required packageNames <- unserialize(SparkR:::readRaw(inputCon)) for (pkg in packageNames) { - suppressPackageStartupMessages(require(as.character(pkg), character.only=TRUE)) + suppressPackageStartupMessages(library(as.character(pkg), character.only=TRUE)) } # read function dependencies @@ -46,6 +63,9 @@ computeFunc <- unserialize(SparkR:::readRawLen(inputCon, funcLen)) env <- environment(computeFunc) parent.env(env) <- .GlobalEnv # Attach under global environment. +# Timing init envs for computing +initElap <- elapsedSecs() + # Read and set broadcast variables numBroadcastVars <- SparkR:::readInt(inputCon) if (numBroadcastVars > 0) { @@ -56,6 +76,9 @@ if (numBroadcastVars > 0) { } } +# Timing broadcast +broadcastElap <- elapsedSecs() + # If -1: read as normal RDD; if >= 0, treat as pairwise RDD and treat the int # as number of partitions to create. numPartitions <- SparkR:::readInt(inputCon) @@ -73,14 +96,23 @@ if (isEmpty != 0) { } else if (deserializer == "row") { data <- SparkR:::readDeserializeRows(inputCon) } + # Timing reading input data for execution + inputElap <- elapsedSecs() + output <- computeFunc(partition, data) + # Timing computing + computeElap <- elapsedSecs() + if (serializer == "byte") { SparkR:::writeRawSerialize(outputCon, output) } else if (serializer == "row") { SparkR:::writeRowSerialize(outputCon, output) } else { - SparkR:::writeStrings(outputCon, output) + # write lines one-by-one with flag + lapply(output, function(line) SparkR:::writeString(outputCon, line)) } + # Timing output + outputElap <- elapsedSecs() } else { if (deserializer == "byte") { # Now read as many characters as described in funcLen @@ -90,6 +122,8 @@ if (isEmpty != 0) { } else if (deserializer == "row") { data <- SparkR:::readDeserializeRows(inputCon) } + # Timing reading input data for execution + inputElap <- elapsedSecs() res <- new.env() @@ -107,6 +141,8 @@ if (isEmpty != 0) { res[[bucket]] <- acc } invisible(lapply(data, hashTupleToEnvir)) + # Timing computing + computeElap <- elapsedSecs() # Step 2: write out all of the environment as key-value pairs. for (name in ls(res)) { @@ -116,13 +152,26 @@ if (isEmpty != 0) { length(res[[name]]$data) <- res[[name]]$counter SparkR:::writeRawSerialize(outputCon, res[[name]]$data) } + # Timing output + outputElap <- elapsedSecs() } +} else { + inputElap <- broadcastElap + computeElap <- broadcastElap + outputElap <- broadcastElap } +# Report timing +SparkR:::writeInt(outputCon, specialLengths$TIMING_DATA) +SparkR:::writeDouble(outputCon, bootTime) +SparkR:::writeDouble(outputCon, initElap - bootElap) # init +SparkR:::writeDouble(outputCon, broadcastElap - initElap) # broadcast +SparkR:::writeDouble(outputCon, inputElap - broadcastElap) # input +SparkR:::writeDouble(outputCon, computeElap - inputElap) # compute +SparkR:::writeDouble(outputCon, outputElap - computeElap) # output + # End of output -if (serializer %in% c("byte", "row")) { - SparkR:::writeInt(outputCon, 0L) -} +SparkR:::writeInt(outputCon, specialLengths$END_OF_STERAM) close(outputCon) close(inputCon) |