本篇內容介紹了“Spark通訊錄相似度計算怎么實現(xiàn)”的有關知識，在實際案例的操作過程中，不少人都會遇到這樣的困境，接下來就讓小編帶領大家學習一下如何處理這些情況吧！希望大家仔細閱讀，能夠學有所成！
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需求：
Hive表中存有UserPhone跟LinkPhone 兩個字段。 通過SparkSQL計算出UserPhone之間通訊錄相似度>=80%的記錄數據。
相似度 = A跟B的交集/A的通訊錄大小。
pom文件
注意依賴之間的適配性，選擇合適的版本。同時一般可能會吧Hive中conf/hive-site.xml配置文件拷貝一份到 IDEA目錄
4.0.0
com.sowhat.demo
PhoneBookSimilaryCal
1.0-SNAPSHOT
2.11.8
2.11.8
2.2.0
2.7.2
1.0
org.scala-lang
scala-library
${scala.version}
org.apache.spark
spark-core_2.11
${spark.version}
org.apache.spark
spark-sql_2.11
${spark.version}
PhoneBookSimilaryCal
net.alchim31.maven
scala-maven-plugin
3.2.2
compile
testCompile
org.apache.maven.plugins
maven-assembly-plugin
com.sowhat.PhoneBookSimilaryCal
jar-with-dependencies
make-assembly
package
single
spark代碼：
package com.sowhat
/**
* @author sowhat
* @create 2020-07-02 16:30
*/
import java.security.MessageDigest
import java.text.SimpleDateFormat
import java.util.Calendar
import org.apache.spark.rdd.RDD
import org.apache.spark.sql.{DataFrame, Row, SparkSession}
import org.apache.spark.storage.StorageLevel
import org.slf4j.{Logger, LoggerFactory}
object PhoneBookSimilaryCal {
def MD5(input: String): String = {
var md5: MessageDigest = null
try {
md5 = MessageDigest.getInstance("MD5")
} catch {
case e: Exception => {
e.printStackTrace
println(e.getMessage)
}
}
val byteArray: Array[Byte] = input.getBytes
val md5Bytes: Array[Byte] = md5.digest(byteArray)
var hexValue: String = ""
for (i <- 0 to md5Bytes.length - 1) {
val str: Int = (md5Bytes(i).toInt) & 0xff
if (str < 16) {
hexValue = hexValue + "0"
}
hexValue = hexValue + Integer.toHexString(str)
}
return hexValue.toString
}
def Yesterday = {
val dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
val cal: Calendar = Calendar.getInstance()
cal.add(Calendar.DATE, -1)
dateFormat.format(cal.getTime)
}
def OneYearBefore = {
val dateFormat: SimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd")
var cal: Calendar = Calendar.getInstance()
cal.add(Calendar.YEAR, -1)
dateFormat.format(cal.getTime())
}
def SixMonthBefore = {
val dateFormat: SimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd")
var cal: Calendar = Calendar.getInstance()
cal.add(Calendar.MONTH, -6)
dateFormat.format(cal.getTime)
}
def ThreeMonthBefore = {
val dateFormat: SimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd")
var cal: Calendar = Calendar.getInstance()
cal.add(Calendar.MONTH, -3)
dateFormat.format(cal.getTime)
}
def OneMonthBefore = {
val dateFormat: SimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd")
var cal: Calendar = Calendar.getInstance()
cal.add(Calendar.MONTH, -1)
dateFormat.format(cal.getTime)
}
private val logger: Logger = LoggerFactory.getLogger(PhoneBookSimilaryCal.getClass)
def main(args: Array[String]): Unit = {
System.setProperty("HADOOP_USER_NAME", "yjy_research") // sparkSQL用到Hadoop的東西，所以權限用戶要注意哦
val spark: SparkSession = SparkSession.builder().appName("phoneBookSimilaryCal")
.config("spark.sql.shuffle.partitions", "1000")
.config("spark.default.parallelism", "3000")
.config("spark.driver.maxResultSize", "40g")
//.conf("spark.serializer", "org.apache.spark.serializer.KryoSerializer")
.config("spark.shuffle.io.maxRetries", "20")
.config("spark.shuffle.io.retryWait", "10s")
.config("spark.storage.memoryFraction", "0.5")
.config("spark.shuffle.memoryFraction", "0.5")
.config("executor-cores", "5")
.config("spark.executor.instances", "10")
.config("spark.executor.cores.config", "3000")
.config("spark.executor.instances", "20")
.config("spark.executor.memory", "40g")
.config("spark.driver.memory", "40g")
.config("spark.sql.warehouse.dir", "/user/hive/warehouse")
.enableHiveSupport().getOrCreate() // 開啟Hive table
spark.sql("use dm_kg")
val sqlText: String = "select user_phone,phone from user_phone_with_phone_message where user_phone not in( '59400a197e9bf5fbb2fbee0456b66cd6','f7e82e195810a01688db2eeecb8e56c9') and etl_date>'" + SixMonthBefore + "'"
println(sqlText)
val df: DataFrame = spark.sql(sqlText)
val rdd: RDD[Row] = df.rdd
def getUserPhoneAndPhone(iter: Iterator[Row]) = {
var res: List[(String, String)] = List[(String, String)]()
while (iter.hasNext) {
val row: Row = iter.next()
res = res.::(row.getString(0), row.getString(1))
}
res.iterator
}
val userPhone_Phone: RDD[(String, String)] = rdd.mapPartitions(getUserPhoneAndPhone)
userPhone_Phone.persist(StorageLevel.MEMORY_AND_DISK_SER)
val userPhone_num: RDD[(String, Long)] = userPhone_Phone.map(x => (x._1, 1L)).reduceByKey(_ + _, 3000)
def dealUserPhoneNum(iter: Iterator[(String, Long)]) = {
var res: List[(String, String)] = List[(String, String)]()
while (iter.hasNext) {
val row: (String, Long) = iter.next()
res.::=(row._1, row._1.concat("_").concat(row._2.toString))
}
res.iterator
}
val userPhone_userPhoneNum: RDD[(String, String)] = userPhone_num.mapPartitions(dealUserPhoneNum)
val userPhone_Phone_userPhoneNum: RDD[(String, (String, String))] = userPhone_Phone.join(userPhone_userPhoneNum, 3000)
val userPhone_Phone_userPhoneNum_filter: RDD[(String, (String, String))] = userPhone_Phone_userPhoneNum.filter(x => x._2._2.split("_")(1).toLong != 1)
def getSecondTuple(iter: Iterator[(String, (String, String))]) = {
var res = List[(String, String)]()
while (iter.hasNext) {
val tuple: (String, (String, String)) = iter.next()
res.::=(tuple._2)
}
res.iterator
}
val phone_userPhoneNum: RDD[(String, String)] = userPhone_Phone_userPhoneNum_filter.mapPartitions(getSecondTuple)
val phone_userPhoneListWithSize: RDD[(String, (List[String], Int))] = phone_userPhoneNum.combineByKey(
(x: String) => (List(x), 1),
(old: (List[String], Int), x: String) => (x :: old._1, old._2 + 1),
(par1: (List[String], Int), par2: (List[String], Int)) => (par1._1 ::: par2._1, par1._2 + par2._2)
) // 結果 (聯(lián)系電話,(對應用戶電話List,List大小))
val userPhoneList: RDD[List[String]] = phone_userPhoneListWithSize.filter(x => (x._2._2 < 1500 && x._2._2 > 1)).map(_._2._1)
// 通訊錄大小 (1,1500) 篩查出來
val userPhone_userPhone: RDD[List[String]] = userPhoneList.flatMap(_.sorted.combinations(2))
// https://blog.csdn.net/aomao4913/article/details/101274895
val userPhone_userPhone_Num: RDD[((String, String), Int)] = userPhone_userPhone.map(x => ((x(0), x(1)), 1)).reduceByKey(_ + _, 3000)
// 獲得 (UserPhone1,UserPhone2),LinkNum
def dealData(iter: Iterator[((String, String), Int)]) = {
var res = List[(String, String, Int)]()
while (iter.hasNext) {
val row: ((String, String), Int) = iter.next()
val line = row._1.toString.split(",") // (userPhone_num,userPhone_num)
res.::=(line(0).replace("(", ""), line(1).replace(")", ""), row._2)
}
res.iterator
}
val userPhone_num_with_userPhone_num_with_commonNum: RDD[(String, String, Int)] = userPhone_userPhone_Num.mapPartitions(dealData)
def FirstToSecond(iter: Iterator[(String, String, Int)]) = {
var res = List[(String, String, Long, Int)]()
while (iter.hasNext) {
val cur: (String, String, Int) = iter.next
val itemList1: Array[String] = cur._1.toString.split("_")
val itemList2: Array[String] = cur._2.toString.split("_")
res.::=(itemList1(0), itemList2(0), itemList1(1).toLong, cur._3)
}
res.iterator
} // userPhone1,userPhone2,userPhone1BookNum,CommonNum
def SecondToFirst(iter: Iterator[(String, String, Int)]) = {
var res = List[(String, String, Long, Int)]()
while (iter.hasNext) {
val cur: (String, String, Int) = iter.next
val itemList1: Array[String] = cur._1.toString.split("_")
val itemList2: Array[String] = cur._2.toString.split("_")
res.::=(itemList2(0), itemList1(0), itemList2(1).toLong, cur._3)
}
res.iterator
} // userPhone2,userPhone1,userPhone2BookNum,CommonNum
val userPhone1_userPhone2_userPhone1BookNum_CommonNum_1: RDD[(String, String, Long, Int)] = userPhone_num_with_userPhone_num_with_commonNum.mapPartitions(FirstToSecond).filter(_._3 > 1)
val userPhone2_userPhone1_userPhone2BookNum_CommonNum_2: RDD[(String, String, Long, Int)] = userPhone_num_with_userPhone_num_with_commonNum.mapPartitions(SecondToFirst).filter(_._3 > 1)
val userPhone1_userPhone2_userPhone1BookNum_CommonNum: RDD[(String, String, Long, Int)] = userPhone2_userPhone1_userPhone2BookNum_CommonNum_2.union(userPhone1_userPhone2_userPhone1BookNum_CommonNum_1)
def finalDeal(iter: Iterator[(String, String, Long, Int)]) = {
var res = List[(String, Long, String, String, Long, String)]()
while (iter.hasNext) {
val cur: (String, String, Long, Int) = iter.next()
res.::=(cur._1.toString, cur._4 * 100 / cur._3, cur._2.toString, "Similar_phoneBook", cur._3, Yesterday)
}
res.iterator
} // user_phone1,percent,user_phone2,label,userPhone1BookNum,CalDate
val userPhone1_percent_userPhone2_Label_UserPhone1BookNum_CalDate: RDD[(String, Long, String, String, Long, String)] = userPhone1_userPhone2_userPhone1BookNum_CommonNum.mapPartitions(finalDeal)
val userPhone1_percent_userPhone2_Label_UserPhone1BookNum_CalDate_Filter: RDD[(String, Long, String, String, Long, String)] = userPhone1_percent_userPhone2_Label_UserPhone1BookNum_CalDate.filter(_._2 >= 80)
import spark.implicits._
val finalResult: DataFrame = userPhone1_percent_userPhone2_Label_UserPhone1BookNum_CalDate_Filter.toDF()
printf("·:" + userPhone1_percent_userPhone2_Label_UserPhone1BookNum_CalDate_Filter.collect().length)
spark.sql("drop table if exists sowhat_similar_phonebook_result")
spark.sql("CREATE TABLE IF NOT EXISTS sowhat_similar_phonebook_result" +
"(startId string comment '起始節(jié)點ID'," +
"similar_percent string comment '相似度'," +
"endId string comment '終止節(jié)點ID'," +
"type string comment '邊的類型'," +
"telbook_num long comment '通訊錄個數'," +
"etl_date Date comment 'etl日期') " +
"row format delimited fields terminated by ',' ")
logger.info("created table similar_phonebook_result")
finalResult.createOrReplaceTempView("resultMessage")
spark.sql("insert into sowhat_similar_phonebook_result select * from resultMessage")
spark.sql("select count(1) from sowhat_similar_phonebook_result").show()
spark.stop()
}
}spark集群啟動腳本命令：
time sshpass -p passpwrd ssh user@ip " nohup
spark-submit --name "sowhatJob" --master yarn --deploy-mode client \
--conf spark.cleaner.periodicGC.interval=120 --conf spark.executor.memory=20g \
--conf spark.num.executors=20 --conf spark.driver.memory=20g --conf spark.sql.shuffle.partitions=1500 \
--conf spark.network.timeout=100000000 --queue root.kg \ (Hadoop集群中YARN隊列)
--class com.sowhat.PhoneBookSimilaryCal PhoneBookSimilaryCal1.jar "
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