maiha

--- a/handlersocket.cpp
+++ b/handlersocket.cpp
@@ -1,4 +1,4 @@
-#include <handlersocket/hstcpcli.hpp>
+#include <libhsclient/hstcpcli.cpp>
 #include "handlersocket.h"
 
 namespace {

maiha

maiha

import sc.ala.neo4j.Neo
new Neo("/tmp/neo1") { W{
  N("中国") --> "牽制" --> N("日本") <-- "牽制" <-- N("ロシア")
  N("アメリカ") --> "擁護" --> N("日本")
}}

maiha

class Bar1 {
  lazy val a = "a"
  lazy val b = a + "b"
}

class Bar2 extends Bar1 {
  override lazy val a = "A"
}

(new Bar1).b  // ab                                                         

maiha

scala> val map = Map[String,Any]("a"->1)
map: scala.collection.immutable.Map[String,Any] = Map((a,1))

scala> map("a")
res0: Any = 1

scala> val x:Int = map("a")
<console>:6: error: type mismatch;
 found   : Any
 required: Int

maiha

 class Foo {
    import scala.collection.mutable.ArrayBuffer
    val elements = List(1,2,3)
    def map[T](block: Int => T) = {
      val vals = ArrayBuffer[T]()
      elements foreach{ i => vals += block(i) }
      vals.toArray
    }
  }

maiha

class Writer extends Actor {
  case class Set(key:String, value:String)

  def act {
    react {
      case s:Set => ...
}

aWriter ! Writer.Set("foo", "1")

maiha

// Why not define actor receive methods with overload?
//
// [features]
//   * simple: there are only receiver's codes
//   * readability: logic is defined just like receive(aMessage)
//   * extensibility: add new receive logic (no needs to care receive matcher)
//   * scalability: works well with traits and inheritances
// [restrictions]
//   * all messages should be case classes (case objects cannot be used)

maiha

java-1.6.0-openjdk
hadoop-1.0.1
hbase-0.92.1

OS: ubuntu-11.10
input src: csv(1億行/22GB)
disk rest: 77GB
memory: 24GB (内12GBはramdiskで利用)
io.compression.codecs: なし(無圧縮で利用)

maiha

resolvers += "Thrift" at "http://people.apache.org/~rawson/repo/"

resolvers += "ClouderaRepo" at "https://repository.cloudera.com/content/repositories/releases"

libraryDependencies ++= Seq(
  "org.apache.hadoop" % "hadoop-core" % "0.20.2-cdh3u2",
  "org.apache.hbase" % "hbase" % "0.90.4-cdh3u2"
)