Apache Spark\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u6570\u636e\u5904\u7406\u6846\u67b6\uff0c\u5728\u5206\u5e03\u5f0f\u73af\u5883\u4e2d\u53ef\u4ee5\u5bf9\u5927\u6570\u636e\u8fdb\u884c\u5206\u6790\u64cd\u4f5c\u3002\u5b83\u662f\u57282009\u5e74\u7531UC Berkeley\u7684Matei Zaharia\u5728UC Berkeley\u7684AMPLab\u8fdb\u884c\u7684\u5b66\u672f\u9879\u76ee\u3002Apache Spark\u662f\u5728\u4e00\u4e2a\u540d\u4e3aMesos\u7684\u96c6\u7fa4\u7ba1\u7406\u5de5\u5177\u7684\u57fa\u7840\u4e0a\u521b\u5efa\u7684\u3002\u540e\u6765\u5bf9\u5176\u8fdb\u884c\u4e86\u4fee\u6539\u548c\u5347\u7ea7\uff0c\u4f7f\u5176\u80fd\u591f\u5728\u57fa\u4e8e\u96c6\u7fa4\u7684\u73af\u5883\u4e2d\u8fdb\u884c\u5206\u5e03\u5f0f\u5904\u7406\u3002<\/p>\n
\u6211\u4eec\u5c06\u4f7f\u7528Maven\u521b\u5efa\u4e00\u4e2a\u6837\u4f8b\u9879\u76ee\u8fdb\u884c\u6f14\u793a\u3002\u8981\u521b\u5efa\u8fd9\u4e2a\u9879\u76ee\uff0c\u8bf7\u5728\u60a8\u5c06\u7528\u4f5c\u5de5\u4f5c\u7a7a\u95f4\u7684\u76ee\u5f55\u4e2d\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u3002<\/p>\n
mvn archetype:generate -DgroupId=com.Olivia.sparkdemo -DartifactId=JD-Spark-WordCount -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false\r\n<\/code><\/pre>\n\u5982\u679c\u60a8\u7b2c\u4e00\u6b21\u8fd0\u884cMaven\uff0c\u6267\u884c\u751f\u6210\u547d\u4ee4\u53ef\u80fd\u9700\u8981\u51e0\u79d2\u949f\uff0c\u56e0\u4e3aMaven\u9700\u8981\u4e0b\u8f7d\u6240\u6709\u6240\u9700\u7684\u63d2\u4ef6\u548c\u6784\u4ef6\u4ee5\u5b8c\u6210\u751f\u6210\u4efb\u52a1\u3002\u4e00\u65e6\u521b\u5efa\u4e86\u9879\u76ee\uff0c\u53ef\u4ee5\u968f\u610f\u5728\u60a8\u559c\u6b22\u7684\u96c6\u6210\u5f00\u53d1\u73af\u5883\u4e2d\u6253\u5f00\u5b83\u3002\u4e0b\u4e00\u6b65\u662f\u5411\u9879\u76ee\u6dfb\u52a0\u9002\u5f53\u7684Maven\u4f9d\u8d56\u3002\u8fd9\u91cc\u662f\u5305\u542b\u9002\u5f53\u4f9d\u8d56\u9879\u7684pom.xml\u6587\u4ef6\u3002<\/p>\n
<dependencies>\r\n\r\n <!-- Import Spark -->\r\n <dependency>\r\n <groupId>org.apache.spark<\/groupId>\r\n <artifactId>spark-core_2.11<\/artifactId>\r\n <version>1.4.0<\/version>\r\n <\/dependency>\r\n\r\n <dependency>\r\n <groupId>junit<\/groupId>\r\n <artifactId>junit<\/artifactId>\r\n <version>4.11<\/version>\r\n <scope>test<\/scope>\r\n <\/dependency>\r\n\r\n<\/dependencies>\r\n\r\n<build>\r\n <plugins>\r\n <plugin>\r\n <groupId>org.apache.maven.plugins<\/groupId>\r\n <artifactId>maven-compiler-plugin<\/artifactId>\r\n <version>2.0.2<\/version>\r\n <configuration>\r\n <source>1.8<\/source>\r\n <target>1.8<\/target>\r\n <\/configuration>\r\n <\/plugin>\r\n <plugin>\r\n <groupId>org.apache.maven.plugins<\/groupId>\r\n <artifactId>maven-jar-plugin<\/artifactId>\r\n <configuration>\r\n <archive>\r\n <manifest>\r\n <addClasspath>true<\/addClasspath>\r\n <classpathPrefix>lib\/<\/classpathPrefix>\r\n <mainClass>com.geekcap.javaworld.sparkexample.WordCount<\/mainClass>\r\n <\/manifest>\r\n <\/archive>\r\n <\/configuration>\r\n <\/plugin>\r\n <plugin>\r\n <groupId>org.apache.maven.plugins<\/groupId>\r\n <artifactId>maven-dependency-plugin<\/artifactId>\r\n <executions>\r\n <execution>\r\n <id>copy<\/id>\r\n <phase>install<\/phase>\r\n <goals>\r\n <goal>copy-dependencies<\/goal>\r\n <\/goals>\r\n <configuration>\r\n <outputDirectory>${project.build.directory}\/lib<\/outputDirectory>\r\n <\/configuration>\r\n <\/execution>\r\n <\/executions>\r\n <\/plugin>\r\n <\/plugins>\r\n<\/build>\r\n<\/code><\/pre>\n\u7531\u4e8e\u8fd9\u662f\u4e00\u4e2a\u57fa\u4e8eMaven\u7684\u9879\u76ee\uff0c\u5b9e\u9645\u4e0a\u4e0d\u9700\u8981\u5728\u60a8\u7684\u673a\u5668\u4e0a\u5b89\u88c5\u548c\u8bbe\u7f6eApache Spark\u3002\u5f53\u6211\u4eec\u8fd0\u884c\u8fd9\u4e2a\u9879\u76ee\u65f6\uff0c\u5c06\u542f\u52a8\u4e00\u4e2a\u8fd0\u884c\u65f6\u7684Apache Spark\u5b9e\u4f8b\uff0c\u4e00\u65e6\u7a0b\u5e8f\u6267\u884c\u5b8c\u6bd5\uff0c\u5b83\u5c06\u88ab\u5173\u95ed\u3002\u6700\u540e\uff0c\u4e3a\u4e86\u4e86\u89e3\u5728\u6211\u4eec\u6dfb\u52a0\u8fd9\u4e2a\u4f9d\u8d56\u65f6\u5411\u9879\u76ee\u4e2d\u6dfb\u52a0\u7684\u6240\u6709JAR\u6587\u4ef6\uff0c\u6211\u4eec\u53ef\u4ee5\u8fd0\u884c\u4e00\u4e2a\u7b80\u5355\u7684Maven\u547d\u4ee4\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u67e5\u770b\u9879\u76ee\u7684\u5b8c\u6574\u4f9d\u8d56\u6811\u3002\u4ee5\u4e0b\u662f\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7684\u547d\u4ee4\uff1a<\/p>\n
mvn dependency:tree\r\n<\/code><\/pre>\n\u5f53\u6211\u4eec\u8fd0\u884c\u8fd9\u4e2a\u547d\u4ee4\u65f6\uff0c\u5b83\u5c06\u4f1a\u5c55\u793a\u7ed9\u6211\u4eec\u4ee5\u4e0b\u7684\u4f9d\u8d56\u6811\u3002<\/p>\n
shubham:JD-Spark-WordCount shubham$ mvn dependency:tree\r\n\r\n[INFO] Scanning for projects...\r\n[WARNING]\r\n[WARNING] Some problems were encountered while building the effective model for com.Olivia:java-word-count:jar:1.0-SNAPSHOT\r\n[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-jar-plugin is missing. @ line 41, column 21\r\n[WARNING]\r\n[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.\r\n[WARNING]\r\n[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.\r\n[WARNING]\r\n[INFO]\r\n[INFO] -------------------< com.Olivia:java-word-count >-------------------\r\n[INFO] Building java-word-count 1.0-SNAPSHOT\r\n[INFO] --------------------------------[ jar ]---------------------------------\r\n[INFO]\r\n[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ java-word-count ---\r\n[INFO] com.Olivia:java-word-count:jar:1.0-SNAPSHOT\r\n[INFO] +- org.apache.spark:spark-core_2.11:jar:1.4.0:compile\r\n[INFO] | +- com.twitter:chill_2.11:jar:0.5.0:compile\r\n[INFO] | | \\- com.esotericsoftware.kryo:kryo:jar:2.21:compile\r\n[INFO] | | +- com.esotericsoftware.reflectasm:reflectasm:jar:shaded:1.07:compile\r\n[INFO] | | +- com.esotericsoftware.minlog:minlog:jar:1.2:compile\r\n[INFO] | | \\- org.objenesis:objenesis:jar:1.2:compile\r\n[INFO] | +- com.twitter:chill-java:jar:0.5.0:compile\r\n[INFO] | +- org.apache.hadoop:hadoop-client:jar:2.2.0:compile\r\n[INFO] | | +- org.apache.hadoop:hadoop-common:jar:2.2.0:compile\r\n[INFO] | | | +- commons-cli:commons-cli:jar:1.2:compile\r\n[INFO] | | | +- org.apache.commons:commons-math:jar:2.1:compile\r\n[INFO] | | | +- xmlenc:xmlenc:jar:0.52:compile\r\n[INFO] | | | +- commons-io:commons-io:jar:2.1:compile\r\n[INFO] | | | +- commons-logging:commons-logging:jar:1.1.1:compile\r\n[INFO] | | | +- commons-lang:commons-lang:jar:2.5:compile\r\n[INFO] | | | +- commons-configuration:commons-configuration:jar:1.6:compile\r\n[INFO] | | | | +- commons-collections:commons-collections:jar:3.2.1:compile\r\n[INFO] | | | | +- commons-digester:commons-digester:jar:1.8:compile\r\n[INFO] | | | | | \\- commons-beanutils:commons-beanutils:jar:1.7.0:compile\r\n[INFO] | | | | \\- commons-beanutils:commons-beanutils-core:jar:1.8.0:compile\r\n[INFO] | | | +- org.codehaus.jackson:jackson-core-asl:jar:1.8.8:compile\r\n[INFO] | | | +- org.apache.avro:avro:jar:1.7.4:compile\r\n[INFO] | | | +- com.google.protobuf:protobuf-java:jar:2.5.0:compile\r\n[INFO] | | | +- org.apache.hadoop:hadoop-auth:jar:2.2.0:compile\r\n[INFO] | | | \\- org.apache.commons:commons-compress:jar:1.4.1:compile\r\n[INFO] | | | \\- org.tukaani:xz:jar:1.0:compile\r\n[INFO] | | +- org.apache.hadoop:hadoop-hdfs:jar:2.2.0:compile\r\n[INFO] | | | \\- org.mortbay.jetty:jetty-util:jar:6.1.26:compile\r\n[INFO] | | +- org.apache.hadoop:hadoop-mapreduce-client-app:jar:2.2.0:compile\r\n[INFO] | | | +- org.apache.hadoop:hadoop-mapreduce-client-common:jar:2.2.0:compile\r\n[INFO] | | | | +- org.apache.hadoop:hadoop-yarn-client:jar:2.2.0:compile\r\n[INFO] | | | | | +- com.google.inject:guice:jar:3.0:compile\r\n[INFO] | | | | | | +- javax.inject:javax.inject:jar:1:compile\r\n[INFO] | | | | | | \\- aopalliance:aopalliance:jar:1.0:compile\r\n[INFO] | | | | | +- com.sun.jersey.jersey-test-framework:jersey-test-framework-grizzly2:jar:1.9:compile\r\n[INFO] | | | | | | +- com.sun.jersey.jersey-test-framework:jersey-test-framework-core:jar:1.9:compile\r\n[INFO] | | | | | | | +- javax.servlet:javax.servlet-api:jar:3.0.1:compile\r\n[INFO] | | | | | | | \\- com.sun.jersey:jersey-client:jar:1.9:compile\r\n[INFO] | | | | | | \\- com.sun.jersey:jersey-grizzly2:jar:1.9:compile\r\n[INFO] | | | | | | +- org.glassfish.grizzly:grizzly-https:jar:2.1.2:compile\r\n[INFO] | | | | | | | \\- org.glassfish.grizzly:grizzly-framework:jar:2.1.2:compile\r\n[INFO] | | | | | | | \\- org.glassfish.gmbal:gmbal-api-only:jar:3.0.0-b023:compile\r\n[INFO] | | | | | | | \\- org.glassfish.external:management-api:jar:3.0.0-b012:compile\r\n[INFO] | | | | | | +- org.glassfish.grizzly:grizzly-http-server:jar:2.1.2:compile\r\n[INFO] | | | | | | | \\- org.glassfish.grizzly:grizzly-rcm:jar:2.1.2:compile\r\n[INFO] | | | | | | +- org.glassfish.grizzly:grizzly-http-servlet:jar:2.1.2:compile\r\n[INFO] | | | | | | \\- org.glassfish:javax.servlet:jar:3.1:compile\r\n[INFO] | | | | | +- com.sun.jersey:jersey-json:jar:1.9:compile\r\n[INFO] | | | | | | +- org.codehaus.jettison:jettison:jar:1.1:compile\r\n[INFO] | | | | | | | \\- stax:stax-api:jar:1.0.1:compile\r\n[INFO] | | | | | | +- com.sun.xml.bind:jaxb-impl:jar:2.2.3-1:compile\r\n[INFO] | | | | | | | \\- javax.xml.bind:jaxb-api:jar:2.2.2:compile\r\n[INFO] | | | | | | | \\- javax.activation:activation:jar:1.1:compile\r\n[INFO] | | | | | | +- org.codehaus.jackson:jackson-jaxrs:jar:1.8.3:compile\r\n[INFO] | | | | | | \\- org.codehaus.jackson:jackson-xc:jar:1.8.3:compile\r\n[INFO] | | | | | \\- com.sun.jersey.contribs:jersey-guice:jar:1.9:compile\r\n[INFO] | | | | \\- org.apache.hadoop:hadoop-yarn-server-common:jar:2.2.0:compile\r\n[INFO] | | | \\- org.apache.hadoop:hadoop-mapreduce-client-shuffle:jar:2.2.0:compile\r\n[INFO] | | +- org.apache.hadoop:hadoop-yarn-api:jar:2.2.0:compile\r\n[INFO] | | +- org.apache.hadoop:hadoop-mapreduce-client-core:jar:2.2.0:compile\r\n[INFO] | | | \\- org.apache.hadoop:hadoop-yarn-common:jar:2.2.0:compile\r\n[INFO] | | +- org.apache.hadoop:hadoop-mapreduce-client-jobclient:jar:2.2.0:compile\r\n[INFO] | | \\- org.apache.hadoop:hadoop-annotations:jar:2.2.0:compile\r\n[INFO] | +- org.apache.spark:spark-launcher_2.11:jar:1.4.0:compile\r\n[INFO] | +- org.apache.spark:spark-network-common_2.11:jar:1.4.0:compile\r\n[INFO] | +- org.apache.spark:spark-network-shuffle_2.11:jar:1.4.0:compile\r\n[INFO] | +- org.apache.spark:spark-unsafe_2.11:jar:1.4.0:compile\r\n[INFO] | +- net.java.dev.jets3t:jets3t:jar:0.7.1:compile\r\n[INFO] | | +- commons-codec:commons-codec:jar:1.3:compile\r\n[INFO] | | \\- commons-httpclient:commons-httpclient:jar:3.1:compile\r\n[INFO] | +- org.apache.curator:curator-recipes:jar:2.4.0:compile\r\n[INFO] | | +- org.apache.curator:curator-framework:jar:2.4.0:compile\r\n[INFO] | | | \\- org.apache.curator:curator-client:jar:2.4.0:compile\r\n[INFO] | | +- org.apache.zookeeper:zookeeper:jar:3.4.5:compile\r\n[INFO] | | | \\- jline:jline:jar:0.9.94:compile\r\n[INFO] | | \\- com.google.guava:guava:jar:14.0.1:compile\r\n[INFO] | +- org.eclipse.jetty.orbit:javax.servlet:jar:3.0.0.v201112011016:compile\r\n[INFO] | +- org.apache.commons:commons-lang3:jar:3.3.2:compile\r\n[INFO] | +- org.apache.commons:commons-math3:jar:3.4.1:compile\r\n[INFO] | +- com.google.code.findbugs:jsr305:jar:1.3.9:compile\r\n[INFO] | +- org.slf4j:slf4j-api:jar:1.7.10:compile\r\n[INFO] | +- org.slf4j:jul-to-slf4j:jar:1.7.10:compile\r\n[INFO] | +- org.slf4j:jcl-over-slf4j:jar:1.7.10:compile\r\n[INFO] | +- log4j:log4j:jar:1.2.17:compile\r\n[INFO] | +- org.slf4j:slf4j-log4j12:jar:1.7.10:compile\r\n[INFO] | +- com.ning:compress-lzf:jar:1.0.3:compile\r\n[INFO] | +- org.xerial.snappy:snappy-java:jar:1.1.1.7:compile\r\n[INFO] | +- net.jpountz.lz4:lz4:jar:1.2.0:compile\r\n[INFO] | +- org.roaringbitmap:RoaringBitmap:jar:0.4.5:compile\r\n[INFO] | +- commons-net:commons-net:jar:2.2:compile\r\n[INFO] | +- org.spark-project.akka:akka-remote_2.11:jar:2.3.4-spark:compile\r\n[INFO] | | +- org.spark-project.akka:akka-actor_2.11:jar:2.3.4-spark:compile\r\n[INFO] | | | \\- com.typesafe:config:jar:1.2.1:compile\r\n[INFO] | | +- io.netty:netty:jar:3.8.0.Final:compile\r\n[INFO] | | +- org.spark-project.protobuf:protobuf-java:jar:2.5.0-spark:compile\r\n[INFO] | | \\- org.uncommons.maths:uncommons-maths:jar:1.2.2a:compile\r\n[INFO] | +- org.spark-project.akka:akka-slf4j_2.11:jar:2.3.4-spark:compile\r\n[INFO] | +- org.scala-lang:scala-library:jar:2.11.6:compile\r\n[INFO] | +- org.json4s:json4s-jackson_2.11:jar:3.2.10:compile\r\n[INFO] | | \\- org.json4s:json4s-core_2.11:jar:3.2.10:compile\r\n[INFO] | | +- org.json4s:json4s-ast_2.11:jar:3.2.10:compile\r\n[INFO] | | \\- org.scala-lang:scalap:jar:2.11.0:compile\r\n[INFO] | | \\- org.scala-lang:scala-compiler:jar:2.11.0:compile\r\n[INFO] | | +- org.scala-lang.modules:scala-xml_2.11:jar:1.0.1:compile\r\n[INFO] | | \\- org.scala-lang.modules:scala-parser-combinators_2.11:jar:1.0.1:compile\r\n[INFO] | +- com.sun.jersey:jersey-server:jar:1.9:compile\r\n[INFO] | | \\- asm:asm:jar:3.1:compile\r\n[INFO] | +- com.sun.jersey:jersey-core:jar:1.9:compile\r\n[INFO] | +- org.apache.mesos:mesos:jar:shaded-protobuf:0.21.1:compile\r\n[INFO] | +- io.netty:netty-all:jar:4.0.23.Final:compile\r\n[INFO] | +- com.clearspring.analytics:stream:jar:2.7.0:compile\r\n[INFO] | +- io.dropwizard.metrics:metrics-core:jar:3.1.0:compile\r\n[INFO] | +- io.dropwizard.metrics:metrics-jvm:jar:3.1.0:compile\r\n[INFO] | +- io.dropwizard.metrics:metrics-json:jar:3.1.0:compile\r\n[INFO] | +- io.dropwizard.metrics:metrics-graphite:jar:3.1.0:compile\r\n[INFO] | +- com.fasterxml.jackson.core:jackson-databind:jar:2.4.4:compile\r\n[INFO] | | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.4.0:compile\r\n[INFO] | | \\- com.fasterxml.jackson.core:jackson-core:jar:2.4.4:compile\r\n[INFO] | +- com.fasterxml.jackson.module:jackson-module-scala_2.11:jar:2.4.4:compile\r\n[INFO] | | +- org.scala-lang:scala-reflect:jar:2.11.2:compile\r\n[INFO] | | \\- com.thoughtworks.paranamer:paranamer:jar:2.6:compile\r\n[INFO] | +- org.apache.ivy:ivy:jar:2.4.0:compile\r\n[INFO] | +- oro:oro:jar:2.0.8:compile\r\n[INFO] | +- org.tachyonproject:tachyon-client:jar:0.6.4:compile\r\n[INFO] | | \\- org.tachyonproject:tachyon:jar:0.6.4:compile\r\n[INFO] | +- net.razorvine:pyrolite:jar:4.4:compile\r\n[INFO] | +- net.sf.py4j:py4j:jar:0.8.2.1:compile\r\n[INFO] | \\- org.spark-project.spark:unused:jar:1.0.0:compile\r\n[INFO] \\- junit:junit:jar:4.11:test\r\n[INFO] \\- org.hamcrest:hamcrest-core:jar:1.3:test\r\n[INFO] ------------------------------------------------------------------------\r\n[INFO] BUILD SUCCESS\r\n[INFO] ------------------------------------------------------------------------\r\n[INFO] Total time: 2.987 s\r\n[INFO] Finished at: 2018-04-07T15:50:34+05:30\r\n[INFO] ------------------------------------------------------------------------\r\n<\/code><\/pre>\n\u53ea\u9700\u6dfb\u52a0\u4e24\u4e2a\u4f9d\u8d56\u9879\uff0cSpark\u5c06\u6536\u96c6\u9879\u76ee\u4e2d\u6240\u9700\u7684\u6240\u6709\u4f9d\u8d56\u9879\uff0c\u5305\u62ecScala\u4f9d\u8d56\u9879\u4ee5\u53caApache Spark\u672c\u8eab\u662f\u7528Scala\u7f16\u5199\u7684\u3002<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u8f93\u5165\u6587\u4ef6<\/h2>\n
\u7531\u4e8e\u6211\u4eec\u8981\u521b\u5efa\u4e00\u4e2a\u5b57\u6570\u7edf\u8ba1\u7a0b\u5e8f\uff0c\u6211\u4eec\u5c06\u5728\u9879\u76ee\u7684\u6839\u76ee\u5f55\u4e2d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3ainput.txt\u7684\u793a\u4f8b\u8f93\u5165\u6587\u4ef6\u3002\u5728\u5176\u4e2d\u653e\u5165\u4efb\u4f55\u5185\u5bb9\uff0c\u6211\u4eec\u4f7f\u7528\u4ee5\u4e0b\u6587\u672c\uff1a<\/p>\n
Hello, my name is Shubham and I am author at JournalDev . JournalDev is a great website to ready\r\ngreat lessons about Java, Big Data, Python and many more Programming languages.\r\n\r\nBig Data lessons are difficult to find but at JournalDev , you can find some excellent\r\npieces of lessons written on Big Data.\r\n<\/code><\/pre>\n\u8bf7\u968f\u610f\u4f7f\u7528\u672c\u6587\u4ef6\u4e2d\u7684\u4efb\u4f55\u6587\u672c\u3002<\/p>\n
\u9879\u76ee\u7ed3\u6784<\/h2>\n
\u5728\u6211\u4eec\u7ee7\u7eed\u5e76\u5f00\u59cb\u4e3a\u9879\u76ee\u7f16\u5199\u4ee3\u7801\u4e4b\u524d\uff0c\u8ba9\u6211\u4eec\u5728\u8fd9\u91cc\u5c55\u793a\u4e00\u4e0b\u9879\u76ee\u7ed3\u6784\u3002\u4e00\u65e6\u6211\u4eec\u5c06\u6240\u6709\u4ee3\u7801\u6dfb\u52a0\u5230\u9879\u76ee\u4e2d\uff0c\u6211\u4eec\u5c31\u4f1a\u62e5\u6709\u4ee5\u4e0b\u7684\u9879\u76ee\u7ed3\u6784\uff1a\u3010\u9644\u6ce8\uff1a\u9644\u4ef620349\u7684\u56fe\u7247\u4e3a\u9879\u76ee\u7ed3\u6784\uff0c\u5c45\u4e2d\u5bf9\u9f50\uff0c\u5bbd\u5ea6\u4e3a399\u3011\u3002<\/p>\n
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import org.apache.spark.SparkConf;\r\nimport org.apache.spark.api.java.JavaPairRDD;\r\nimport org.apache.spark.api.java.JavaRDD;\r\nimport org.apache.spark.api.java.JavaSparkContext;\r\nimport scala.Tuple2;\r\n\r\nimport java.util.Arrays;\r\n<\/code><\/pre>\n\u63a5\u4e0b\u6765\uff0c\u8fd9\u662f\u6211\u4eec\u5c06\u8981\u4f7f\u7528\u7684\u8bfe\u7a0b\u7ed3\u6784\u3002<\/p>\n
package com.Olivia.sparkdemo;\r\n\r\n...imports...\r\n\r\npublic class WordCounter {\r\n\r\n private static void wordCount(String fileName) {\r\n ...\r\n }\r\n\r\n public static void main(String[] args) {\r\n ...\r\n }\r\n}\r\n<\/code><\/pre>\n\u6240\u6709\u903b\u8f91\u90fd\u5c06\u653e\u5728wordCount\u65b9\u6cd5\u4e2d\u3002\u6211\u4eec\u9996\u5148\u8981\u4e3aSparkConf\u7c7b\u5b9a\u4e49\u4e00\u4e2a\u5bf9\u8c61\u3002\u8fd9\u4e2a\u7c7b\u7684\u5bf9\u8c61\u7528\u4e8e\u4e3a\u7a0b\u5e8f\u8bbe\u7f6e\u5404\u79cdSpark\u53c2\u6570\uff0c\u4f5c\u4e3a\u952e\u503c\u5bf9\u3002\u6211\u4eec\u53ea\u63d0\u4f9b\u7b80\u5355\u7684\u53c2\u6570\u3002<\/p>\n
SparkConf sparkConf = new SparkConf().setMaster(\"local\").setAppName(\"JD Word Counter\");\r\n<\/code><\/pre>\n\u4e3b\u8282\u70b9\u6307\u5b9a\u672c\u5730\uff0c\u8fd9\u610f\u5473\u7740\u8be5\u7a0b\u5e8f\u5e94\u8fde\u63a5\u5230\u5728\u672c\u5730\u4e3b\u673a\u4e0a\u8fd0\u884c\u7684Spark\u7ebf\u7a0b\u3002\u5e94\u7528\u7a0b\u5e8f\u540d\u79f0\u53ea\u662f\u4e3aSpark\u63d0\u4f9b\u5e94\u7528\u7a0b\u5e8f\u7684\u5143\u6570\u636e\u7684\u4e00\u79cd\u65b9\u5f0f\u3002\u73b0\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u914d\u7f6e\u5bf9\u8c61\u6784\u5efa\u4e00\u4e2aSpark\u4e0a\u4e0b\u6587\u5bf9\u8c61\u3002<\/p>\n
JavaSparkContext sparkContext = new JavaSparkContext(sparkConf);\r\n<\/code><\/pre>\nSpark\u5c06\u5176\u83b7\u5f97\u7684\u6bcf\u4e2a\u8d44\u6e90\u90fd\u89c6\u4e3aRDD\uff08\u5f39\u6027\u5206\u5e03\u5f0f\u6570\u636e\u96c6\uff09\uff0c\u8fd9\u6709\u52a9\u4e8e\u5c06\u6570\u636e\u7ec4\u7ec7\u6210\u53ef\u66f4\u9ad8\u6548\u5206\u6790\u7684\u67e5\u627e\u6570\u636e\u7ed3\u6784\u3002\u6211\u4eec\u73b0\u5728\u5c06\u8f93\u5165\u6587\u4ef6\u8f6c\u6362\u4e3aJavaRDD\u5bf9\u8c61\u672c\u8eab\u3002<\/p>\n
JavaRDD<String> inputFile = sparkContext.textFile(fileName);\r\n<\/code><\/pre>\n\u6211\u4eec\u5c06\u73b0\u5728\u4f7f\u7528Java 8\u7684API\u6765\u5904\u7406JavaRDD\u6587\u4ef6\uff0c\u5e76\u5c06\u6587\u4ef6\u4e2d\u5305\u542b\u7684\u5355\u8bcd\u5206\u5272\u6210\u72ec\u7acb\u7684\u5355\u8bcd\u3002<\/p>\n
JavaRDD<String> wordsFromFile = inputFile.flatMap(content -> Arrays.asList(content.split(\" \")));\r\n<\/code><\/pre>\n\u540c\u6837\uff0c\u6211\u4eec\u4f7f\u7528Java 8\u7684mapToPair\uff08…\uff09\u65b9\u6cd5\u6765\u8ba1\u7b97\u5b57\u6570\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e2a\u5b57\u6570\u548c\u6570\u5b57\u7684\u5bf9\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u8f93\u51fa\u5c55\u793a\u3002<\/p>\n
JavaPairRDD countData = wordsFromFile.mapToPair(t -> new Tuple2(t, 1)).reduceByKey((x, y) -> (int) x + (int) y);\r\n<\/code><\/pre>\n\u73b0\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u8f93\u51fa\u6587\u4ef6\u4fdd\u5b58\u4e3a\u6587\u672c\u6587\u4ef6\u3002<\/p>\n
countData.saveAsTextFile(\"CountData\");\r\n<\/code><\/pre>\n\u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528main()\u65b9\u6cd5\u63d0\u4f9b\u7a0b\u5e8f\u7684\u5165\u53e3\u70b9\u3002<\/p>\n
public static void main(String[] args) {\r\n if (args.length == 0) {\r\n System.out.println(\"No files provided.\");\r\n System.exit(0);\r\n }\r\n wordCount(args[0]);\r\n}\r\n<\/code><\/pre>\n\u6574\u4e2a\u6587\u4ef6\u7684\u5916\u89c2\u5982\u4e0b\uff1a<\/p>\n
package com.Olivia.sparkdemo;\r\n\r\nimport org.apache.spark.SparkConf;\r\nimport org.apache.spark.api.java.JavaPairRDD;\r\nimport org.apache.spark.api.java.JavaRDD;\r\nimport org.apache.spark.api.java.JavaSparkContext;\r\nimport scala.Tuple2;\r\n\r\nimport java.util.Arrays;\r\n\r\npublic class WordCounter {\r\n\r\n private static void wordCount(String fileName) {\r\n\r\n SparkConf sparkConf = new SparkConf().setMaster(\"local\").setAppName(\"JD Word Counter\");\r\n\r\n JavaSparkContext sparkContext = new JavaSparkContext(sparkConf);\r\n\r\n JavaRDD<String> inputFile = sparkContext.textFile(fileName);\r\n\r\n JavaRDD<String> wordsFromFile = inputFile.flatMap(content -> Arrays.asList(content.split(\" \")));\r\n\r\n JavaPairRDD countData = wordsFromFile.mapToPair(t -> new Tuple2(t, 1)).reduceByKey((x, y) -> (int) x + (int) y);\r\n\r\n countData.saveAsTextFile(\"CountData\");\r\n }\r\n\r\n public static void main(String[] args) {\r\n\r\n if (args.length == 0) {\r\n System.out.println(\"No files provided.\");\r\n System.exit(0);\r\n }\r\n\r\n wordCount(args[0]);\r\n }\r\n}\r\n<\/code><\/pre>\n\u6211\u4eec\u73b0\u5728\u5c06\u4f7f\u7528Maven\u81ea\u8eab\u6765\u8fd0\u884c\u8fd9\u4e2a\u7a0b\u5e8f\u3002<\/p>\n
\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f<\/h2>\n
\u8981\u8fd0\u884c\u8fd9\u4e2a\u5e94\u7528\u7a0b\u5e8f\uff0c\u8bf7\u8fdb\u5165\u7a0b\u5e8f\u7684\u6839\u76ee\u5f55\u5e76\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
mvn exec:java -Dexec.mainClass=com.Olivia.sparkdemo.WordCounter -Dexec.args=\"input.txt\"\r\n<\/code><\/pre>\n\u5728\u8fd9\u4e2a\u547d\u4ee4\u4e2d\uff0c\u6211\u4eec\u5411Maven\u63d0\u4f9b\u4e86Main\u7c7b\u7684\u5b8c\u5168\u9650\u5b9a\u540d\u548c\u8f93\u5165\u6587\u4ef6\u7684\u540d\u79f0\u3002\u4e00\u65e6\u8fd9\u4e2a\u547d\u4ee4\u6267\u884c\u5b8c\u6210\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u6211\u4eec\u7684\u9879\u76ee\u4e2d\u770b\u5230\u4e00\u4e2a\u65b0\u7684\u76ee\u5f55\u88ab\u521b\u5efa\uff1a \u9879\u76ee\u8f93\u51fa\u76ee\u5f55 \u5f53\u6211\u4eec\u6253\u5f00\u8fd9\u4e2a\u76ee\u5f55\uff0c\u5e76\u6253\u5f00\u5176\u4e2d\u7684\u540d\u4e3a\u201cpart-00000.txt\u201d\u7684\u6587\u4ef6\u65f6\uff0c\u5b83\u7684\u5185\u5bb9\u5982\u4e0b\uff1a \u5355\u8bcd\u7edf\u8ba1\u8f93\u51fa<\/p>\n
\u7ed3\u8bba<\/h2>\n
\u5728\u8fd9\u8282\u8bfe\u4e2d\uff0c\u6211\u4eec\u5b66\u4e60\u4e86\u5982\u4f55\u5728\u57fa\u4e8eMaven\u7684\u9879\u76ee\u4e2d\u4f7f\u7528Apache Spark\u6765\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u4f46\u6709\u6548\u7684\u5355\u8bcd\u8ba1\u6570\u7a0b\u5e8f\u3002\u9605\u8bfb\u66f4\u591a\u5173\u4e8e\u5927\u6570\u636e\u7684\u6587\u7ae0\uff0c\u4ee5\u6df1\u5165\u4e86\u89e3\u53ef\u7528\u7684\u5927\u6570\u636e\u5de5\u5177\u548c\u5904\u7406\u6846\u67b6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Apache Spark \u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5206\u5e03\u5f0f\u8ba1\u7b97\u7cfb\u7edf\uff0c\u4e3b\u8981\u7528\u4e8e\u5927\u89c4\u6a21\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u3002 Apache Spark […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50735","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
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