Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

First draft of pure-scalding memory backend #1697

Merged
merged 4 commits into from Jun 23, 2017
Merged

First draft of pure-scalding memory backend #1697

Show file tree
Hide file tree
Changes from 3 commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
bfacc4c
First draft of memory backend
johnynek Jun 3, 2017
e609011
add hashJoin support
johnynek Jun 4, 2017
dd1f8a4
make futures run in parallel
johnynek Jun 4, 2017
ef85805
address review comments
johnynek Jun 23, 2017
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Jump to
Jump to file
Failed to load files.
Diff view
Diff view
2 changes: 1 addition & 1 deletion scalding-core/src/main/scala/com/twitter/scalding/Execution.scala
View file
Open in desktop
Expand Up @@ -143,7 +143,7 @@ sealed trait Execution[+T] extends java.io.Serializable { self: Product =>
* Seriously: pro-style is for this to be called only once in a program.
*/
final def run(conf: Config, mode: Mode)(implicit cec: ConcurrentExecutionContext): Future[T] = {
val writer: Execution.Writer = new AsyncFlowDefRunner
val writer: Execution.Writer = mode.newWriter()
val ec = new EvalCache(writer)
val confWithId = conf.setScaldingExecutionId(UUID.randomUUID.toString)
// get on Trampoline
Expand Down
34 changes: 19 additions & 15 deletions scalding-core/src/main/scala/com/twitter/scalding/Mode.scala
View file
Open in desktop
Expand Up @@ -15,30 +15,23 @@ limitations under the License.
*/
package com.twitter.scalding

import cascading.flow.local.{ LocalFlowConnector, LocalFlowProcess }
import cascading.flow.{ FlowProcess, FlowConnector, FlowDef, Flow }
import cascading.property.AppProps
import cascading.tap.Tap
import cascading.tuple.{ Tuple, TupleEntryIterator }
import com.twitter.scalding.typed.cascading_backend.AsyncFlowDefRunner
import java.io.File
import java.util.{ UUID, Properties }

import org.apache.hadoop.conf.Configuration
import org.apache.hadoop.fs.{ FileSystem, Path }
import org.apache.hadoop.mapred.JobConf

import cascading.flow.{ FlowProcess, FlowConnector, FlowDef, Flow }
import cascading.flow.local.LocalFlowConnector
import cascading.flow.local.LocalFlowProcess
import cascading.property.AppProps
import cascading.tap.Tap
import cascading.tuple.Tuple
import cascading.tuple.TupleEntryIterator

import org.slf4j.LoggerFactory
import scala.annotation.tailrec
import scala.collection.JavaConverters._
import scala.collection.mutable.Buffer
import scala.collection.mutable.{ Map => MMap }
import scala.collection.mutable.{ Set => MSet }
import scala.collection.mutable.{ Buffer, Map => MMap, Set => MSet }
import scala.util.{ Failure, Success }

import org.slf4j.LoggerFactory

case class ModeException(message: String) extends RuntimeException(message)

case class ModeLoadException(message: String, origin: ClassNotFoundException) extends RuntimeException(origin)
Expand Down Expand Up @@ -105,6 +98,11 @@ object Mode {
}

trait Mode extends java.io.Serializable {

/**
* Make the Execution.Writer for this platform
*/
def newWriter(): Execution.Writer
/*
* Using a new FlowProcess, which is only suitable for reading outside
* of a map/reduce job, open a given tap and return the TupleEntryIterator
Expand Down Expand Up @@ -154,6 +152,9 @@ trait HadoopMode extends Mode {
}
}

def newWriter(): Execution.Writer =
new AsyncFlowDefRunner

// TODO unlike newFlowConnector, this does not look at the Job.config
override def openForRead(config: Config, tap: Tap[_, _, _]) = {
val htap = tap.asInstanceOf[Tap[JobConf, _, _]]
Expand Down Expand Up @@ -183,6 +184,9 @@ trait CascadingLocal extends Mode {
override def newFlowConnector(conf: Config) =
new LocalFlowConnector(conf.toMap.toMap[AnyRef, AnyRef].asJava) // linter:ignore

def newWriter(): Execution.Writer =
new AsyncFlowDefRunner

override def openForRead(config: Config, tap: Tap[_, _, _]) = {
val ltap = tap.asInstanceOf[Tap[Properties, _, _]]
val props = new java.util.Properties
Expand Down