[
https://issues.apache.org/jira/browse/SPARK-28999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ruiliang updated SPARK-28999:
-----------------------------
Description:
Exception in thread "main" org.apache.spark.sql.AnalysisException: Multiple
mapGroupsWithStates are not supported on a streaming DataFrames/Datasets;;
How do you carry out a double digit operation?The first processing state and
the second summarizing the processed state data?Is there any good way not to
sink->kafka, kafka source->spark structured like this?thank you
{code:java}
//代码占位符
package org.roy.demo.streaming.bus
import java.sql.Timestamp
import org.apache.log4j.{Level, Logger}
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.functions.current_timestamp
import org.apache.spark.sql.streaming._
import streaming.StreamingExamples
object StructuredOrderStateListRturn {
Logger.getLogger("org.apache.spark").setLevel(Level.WARN)
StreamingExamples.setStreamingLogLevels()
def main(args: Array[String]): Unit = {
val spark = SparkSession
.builder.master("local[*]")
.appName("StructuredSessionization")
.getOrCreate()
import spark.implicits._
// Create DataFrame representing the stream of input lines from connection
to host:port
val lines = spark.readStream
.format("socket")
.option("host", "10.200.102.192")
.option("port", 9998)
.load().withColumn("current_timestamp", current_timestamp)
//100,1,10,20,2019-09-03
//1001,1,10,200,2019-09-03
//1001,1,10,2000,2019-09-03
val events = lines
.as[(String, Timestamp)]
.map { case (line, timestamp) => {
val orderInfo = line.split(",")
if (orderInfo != null && orderInfo.size > 4) {
val objEvent = NOEvent(orderInfo(0), orderInfo(1).toInt,
orderInfo(2), orderInfo(3).toDouble, orderInfo(4), timestamp)
objEvent
} else {
null
}
}
}.filter(obj => obj != null)
/**
* -次维护订单状态数据，返回最新的一个订单，并把上一个订单金额附加返回
*/
val orderUpdates = events
.groupByKey(event => event.orderId)
//orderInfoStore=输入的状态类型，orderInfoStoreUpdate=输出的状态类型
.mapGroupsWithState[orderInfoStore,
orderInfoStoreUpdate](GroupStateTimeout.ProcessingTimeTimeout) {
case (orderId: String, events: Iterator[NOEvent], state:
GroupState[orderInfoStore]) =>
// 如果时间超时，更新缓存
if (state.hasTimedOut) {
//时间过了，删除sotre里的数据，把expired=true,返回在线时间等信息 0:00-0:10可以设这个时间，不计算，干掉数据
val finalUpdate =
orderInfoStoreUpdate(orderId, state.get.otype, state.get.storeId,
state.get.money, 0.0, state.get.orderDate, state.get.timestamp, expired = true)
state.remove()
finalUpdate
} else {
//订单没有超时，如果id存在，则替换掉，使用新的订单数据，或作别的操作
var oldOrder = 0.0 //上一笔的金额
val lastEnvent = events.toSeq.last
val updatedSession = if (state.exists) {
oldOrder = state.get.money
//存在,算出旧的金额是多少
orderInfoStore(orderId, lastEnvent.otype, lastEnvent.storeId,
lastEnvent.money, oldOrder, lastEnvent.orderDate, lastEnvent.timestamp)
} else {
orderInfoStore(orderId, lastEnvent.otype, lastEnvent.storeId,
lastEnvent.money, 0, lastEnvent.orderDate, lastEnvent.timestamp)
}
//更新缓存里面的这条数据信息
state.update(updatedSession)
// Set timeout such that the session will be expired if no data
received for 10 seconds
state.setTimeoutDuration("3600 seconds")
orderInfoStoreUpdate(orderId, state.get.otype, state.get.storeId,
state.get.money, oldOrder, state.get.orderDate, state.get.timestamp, expired =
false)
}
}
/**
* 二次计算出门店的数据
*/
val storeUpdate = orderUpdates.groupByKey(order =>
order.storeId).mapGroupsWithState[g1InfoStore,
g1InfoStoreUpdate](GroupStateTimeout.ProcessingTimeTimeout) {
case (storeId: String, events: Iterator[orderInfoStoreUpdate], state:
GroupState[g1InfoStore]) =>
// 如果时间超时，更新缓存
if (state.hasTimedOut) {
//时间过了，删除sotre里的数据，把expired=true,返回在线时间等信息 0:00-0:10可以设这个时间，不计算，干掉数据
val finalUpdate =
g1InfoStoreUpdate(storeId, state.get.num, state.get.money,
state.get.timestamp, expired = true)
state.remove()
finalUpdate
} else {
var storeNum = events.map(_.orderId).size
var storeMoney = events.map(_.money).reduce(_ + _) //其实只会一个
val updatedStore = if (state.exists) { //门店存在，
val old_order_moneys = events.map(_.oldMoney).reduce(_ + _) //其实只会一个
//门店总客+=新订单金额-旧订单
storeMoney = state.get.money + storeMoney - old_order_moneys
g1InfoStore(storeId, state.get.num + events.map(_.orderId).size,
storeMoney, state.get.timestamp)
} else {
g1InfoStore(storeId, storeNum, storeMoney, state.get.timestamp)
}
//更新缓存里面的这条数据信息
state.update(updatedStore)
// Set timeout such that the session will be expired if no data
received for 10 seconds
state.setTimeoutDuration("3600 seconds")
g1InfoStoreUpdate(storeId, state.get.num, state.get.money,
state.get.timestamp, expired = true)
}
}
//门店统计好的数据在汇总
// storeUpdate.createOrReplaceTempView("update_tmp")
// spark.sql("select storeId,otype, count(1) num,sum(money) as moneys
,sum(oldMoney) as oldMoney from update_tmp group by storeId,otype ")
val query = storeUpdate
.writeStream
.outputMode("update")
.format("console")
.start()
query.awaitTermination()
}
}
/** User-defined data type representing the input events */
case class NOEvent(orderId: String, otype: Int, storeId: String, money: Double,
orderDate: String, timestamp: Timestamp)
case class orderInfoStore(orderId: String, otype: Int, storeId: String, money:
Double, oldMoney: Double, orderDate: String, timestamp: Timestamp)
case class orderInfoStoreUpdate(orderId: String, otype: Int, storeId: String,
money: Double, oldMoney: Double, orderDate: String, timestamp: Timestamp,
expired: Boolean)
/** 第一个分组信息 */
case class g1InfoStore(storeid: String,/* otype: Int,*/ num: Int, money:
Double, timestamp: Timestamp)
case class g1InfoStoreUpdate(storeid: String,/* otype: Int,*/ num: Int, money:
Double, timestamp: Timestamp, expired: Boolean)
{code}
I changed the way to maintain a list of orders in the store, and then to
maintain the list and re-operate the calculation. However, in this way, I will
maintain the details of the first-line data, and I will temporarily use many
resources. I wonder if there is any other way to deal with this kind of data.
{code:java}
package org.roy.demo.streaming.bus
import java.sql.Timestamp
import org.apache.log4j.{Level, Logger}
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.functions.current_timestamp
import org.apache.spark.sql.streaming._
import streaming.StreamingExamples
/**
* create by Roy 2019/09/06
* Counting day order number and amount
*/
object StructuredStoreOrderState {
Logger.getLogger("org.apache.spark").setLevel(Level.WARN)
StreamingExamples.setStreamingLogLevels()
def main(args: Array[String]): Unit = {
val spark = SparkSession
.builder.master("local[*]")
.appName("StructuredSessionization")
.getOrCreate()
import spark.implicits._
// Create DataFrame representing the stream of input lines from connection
to host:port
val lines = spark.readStream
.format("socket")
.option("host", "10.200.102.192")
.option("port", 9998)
.load().withColumn("current_timestamp", current_timestamp)
//100,1,10,20,2019-09-03
//1001,1,10,200,2019-09-03
//1001,1,10,2000,2019-09-03
val events = lines
.as[(String, Timestamp)]
.map { case (line, timestamp) => {
val orderInfo = line.split(",")
if (orderInfo != null && orderInfo.size > 4) {
val objEvent = dataEvent(orderInfo(0), orderInfo(1).toInt,
orderInfo(2), orderInfo(3).toDouble, orderInfo(4), timestamp)
objEvent
} else {
null
}
}
}.filter(obj => obj != null)
val orderUpdates = events
.groupByKey(event => event.storeId)
.mapGroupsWithState[storeOrderInfoState,
storeOrderInfoStateUpdate](GroupStateTimeout.ProcessingTimeTimeout) {
case (key: String, values: Iterator[dataEvent], state:
GroupState[storeOrderInfoState]) =>
val seqs = values.toSeq
val times = seqs.map(_.timestamp).seq
val max_time = new Timestamp(System.currentTimeMillis())
if (state.hasTimedOut) {
val finalUpdate =
storeOrderInfoStateUpdate(key, state.get.orderNum,
state.get.orderMoney, max_time, expired = true)
state.remove()
finalUpdate
} else {
val updatedSession = if (state.exists) {
val stateMap = state.get.orderInfoStoreMap
var norderMap2: Map[String, Double] = Map()
var num = 0
var money = 0.0
seqs.foreach(e => {
if (stateMap.contains(e.orderId)) {
//新订单-旧订单，再进行+总合
money += e.money - stateMap.get(e.orderId).get
} else {
num += 1
money += e.money
}
norderMap2 += (e.orderId -> e.money)
})
//取出所有的订单+流进来的订单，需要判断是否有重复订单
storeOrderInfoState(key, state.get.orderNum + num,
state.get.orderMoney + money, stateMap ++ norderMap2, max_time)
} else {
var norderMap2: Map[String, Double] = Map()
var money = 0.0
seqs.foreach(e => {
money += e.money
norderMap2 += (e.orderId -> e.money)
})
storeOrderInfoState(key, norderMap2.size, money, norderMap2,
max_time)
}
//更新缓存里面的这条数据信息
println("updatedSession" + updatedSession)
println(updatedSession.orderMoney)
state.update(updatedSession)
// Set timeout such that the session will be expired if no data
received for 10 seconds
state.setTimeoutDuration("3600 seconds")
storeOrderInfoStateUpdate(key, state.get.orderNum,
state.get.orderMoney, max_time, expired = false)
}
}
val query = orderUpdates
.writeStream
.outputMode("update")
.format("console")
.start()
query.awaitTermination()
}
}
/** User-defined data type representing the input events */
case class dataEvent(orderId: String, otype: Int, storeId: String, money:
Double, orderTime: String, timestamp: Timestamp)
//最一个订单状态
case class orderEnventInfo(orderId: String, otype: Int, storeId: String, money:
Double, orderTime: String, timestamp: Timestamp)
//门店里面，维护一张所有订单，sotre orderInfoStoreMap: Map[String, orderEnventInfo]
Seq[orderEnventInfo]
case class storeOrderInfoState(storeId: String, orderNum: Int, orderMoney:
Double, orderInfoStoreMap: Map[String, Double], timestamp: Timestamp)
//返回计算后的结果
case class storeOrderInfoStateUpdate(storeId: String, orderNum: Int,
orderMoney: Double, timestamp: Timestamp,
expired: Boolean)
{code}
was:
Exception in thread "main" org.apache.spark.sql.AnalysisException: Multiple
mapGroupsWithStates are not supported on a streaming DataFrames/Datasets;;
How do you carry out a double digit operation?The first processing state and
the second summarizing the processed state data?Is there any good way not to
sink->kafka, kafka source->spark structured like this?thank you
{code:java}
//代码占位符
package org.roy.demo.streaming.bus
import java.sql.Timestamp
import org.apache.log4j.{Level, Logger}
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.functions.current_timestamp
import org.apache.spark.sql.streaming._
import streaming.StreamingExamples
object StructuredOrderStateListRturn {
Logger.getLogger("org.apache.spark").setLevel(Level.WARN)
StreamingExamples.setStreamingLogLevels()
def main(args: Array[String]): Unit = {
val spark = SparkSession
.builder.master("local[*]")
.appName("StructuredSessionization")
.getOrCreate()
import spark.implicits._
// Create DataFrame representing the stream of input lines from connection
to host:port
val lines = spark.readStream
.format("socket")
.option("host", "10.200.102.192")
.option("port", 9998)
.load().withColumn("current_timestamp", current_timestamp)
//100,1,10,20,2019-09-03
//1001,1,10,200,2019-09-03
//1001,1,10,2000,2019-09-03
val events = lines
.as[(String, Timestamp)]
.map { case (line, timestamp) => {
val orderInfo = line.split(",")
if (orderInfo != null && orderInfo.size > 4) {
val objEvent = NOEvent(orderInfo(0), orderInfo(1).toInt,
orderInfo(2), orderInfo(3).toDouble, orderInfo(4), timestamp)
objEvent
} else {
null
}
}
}.filter(obj => obj != null)
/**
* -次维护订单状态数据，返回最新的一个订单，并把上一个订单金额附加返回
*/
val orderUpdates = events
.groupByKey(event => event.orderId)
//orderInfoStore=输入的状态类型，orderInfoStoreUpdate=输出的状态类型
.mapGroupsWithState[orderInfoStore,
orderInfoStoreUpdate](GroupStateTimeout.ProcessingTimeTimeout) {
case (orderId: String, events: Iterator[NOEvent], state:
GroupState[orderInfoStore]) =>
// 如果时间超时，更新缓存
if (state.hasTimedOut) {
//时间过了，删除sotre里的数据，把expired=true,返回在线时间等信息 0:00-0:10可以设这个时间，不计算，干掉数据
val finalUpdate =
orderInfoStoreUpdate(orderId, state.get.otype, state.get.storeId,
state.get.money, 0.0, state.get.orderDate, state.get.timestamp, expired = true)
state.remove()
finalUpdate
} else {
//订单没有超时，如果id存在，则替换掉，使用新的订单数据，或作别的操作
var oldOrder = 0.0 //上一笔的金额
val lastEnvent = events.toSeq.last
val updatedSession = if (state.exists) {
oldOrder = state.get.money
//存在,算出旧的金额是多少
orderInfoStore(orderId, lastEnvent.otype, lastEnvent.storeId,
lastEnvent.money, oldOrder, lastEnvent.orderDate, lastEnvent.timestamp)
} else {
orderInfoStore(orderId, lastEnvent.otype, lastEnvent.storeId,
lastEnvent.money, 0, lastEnvent.orderDate, lastEnvent.timestamp)
}
//更新缓存里面的这条数据信息
state.update(updatedSession)
// Set timeout such that the session will be expired if no data
received for 10 seconds
state.setTimeoutDuration("3600 seconds")
orderInfoStoreUpdate(orderId, state.get.otype, state.get.storeId,
state.get.money, oldOrder, state.get.orderDate, state.get.timestamp, expired =
false)
}
}
/**
* 二次计算出门店的数据
*/
val storeUpdate = orderUpdates.groupByKey(order =>
order.storeId).mapGroupsWithState[g1InfoStore,
g1InfoStoreUpdate](GroupStateTimeout.ProcessingTimeTimeout) {
case (storeId: String, events: Iterator[orderInfoStoreUpdate], state:
GroupState[g1InfoStore]) =>
// 如果时间超时，更新缓存
if (state.hasTimedOut) {
//时间过了，删除sotre里的数据，把expired=true,返回在线时间等信息 0:00-0:10可以设这个时间，不计算，干掉数据
val finalUpdate =
g1InfoStoreUpdate(storeId, state.get.num, state.get.money,
state.get.timestamp, expired = true)
state.remove()
finalUpdate
} else {
var storeNum = events.map(_.orderId).size
var storeMoney = events.map(_.money).reduce(_ + _) //其实只会一个
val updatedStore = if (state.exists) { //门店存在，
val old_order_moneys = events.map(_.oldMoney).reduce(_ + _) //其实只会一个
//门店总客+=新订单金额-旧订单
storeMoney = state.get.money + storeMoney - old_order_moneys
g1InfoStore(storeId, state.get.num + events.map(_.orderId).size,
storeMoney, state.get.timestamp)
} else {
g1InfoStore(storeId, storeNum, storeMoney, state.get.timestamp)
}
//更新缓存里面的这条数据信息
state.update(updatedStore)
// Set timeout such that the session will be expired if no data
received for 10 seconds
state.setTimeoutDuration("3600 seconds")
g1InfoStoreUpdate(storeId, state.get.num, state.get.money,
state.get.timestamp, expired = true)
}
}
//门店统计好的数据在汇总
// storeUpdate.createOrReplaceTempView("update_tmp")
// spark.sql("select storeId,otype, count(1) num,sum(money) as moneys
,sum(oldMoney) as oldMoney from update_tmp group by storeId,otype ")
val query = storeUpdate
.writeStream
.outputMode("update")
.format("console")
.start()
query.awaitTermination()
}
}
/** User-defined data type representing the input events */
case class NOEvent(orderId: String, otype: Int, storeId: String, money: Double,
orderDate: String, timestamp: Timestamp)
case class orderInfoStore(orderId: String, otype: Int, storeId: String, money:
Double, oldMoney: Double, orderDate: String, timestamp: Timestamp)
case class orderInfoStoreUpdate(orderId: String, otype: Int, storeId: String,
money: Double, oldMoney: Double, orderDate: String, timestamp: Timestamp,
expired: Boolean)
/** 第一个分组信息 */
case class g1InfoStore(storeid: String,/* otype: Int,*/ num: Int, money:
Double, timestamp: Timestamp)
case class g1InfoStoreUpdate(storeid: String,/* otype: Int,*/ num: Int, money:
Double, timestamp: Timestamp, expired: Boolean)
{code}
> Exception in thread "main" org.apache.spark.sql.AnalysisException: Multiple
> mapGroupsWithStates are not supported on a streaming DataFrames/Datasets;;
> ------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-28999
> URL: https://issues.apache.org/jira/browse/SPARK-28999
> Project: Spark
> Issue Type: Question
> Components: Spark Core
> Affects Versions: 2.3.0
> Reporter: ruiliang
> Priority: Major
> Attachments: 微信图片_20190906170459.png
>
>
> Exception in thread "main" org.apache.spark.sql.AnalysisException: Multiple
> mapGroupsWithStates are not supported on a streaming DataFrames/Datasets;;
>
> How do you carry out a double digit operation?The first processing state and
> the second summarizing the processed state data?Is there any good way not to
> sink->kafka, kafka source->spark structured like this?thank you
> {code:java}
> //代码占位符
> package org.roy.demo.streaming.bus
> import java.sql.Timestamp
> import org.apache.log4j.{Level, Logger}
> import org.apache.spark.sql.SparkSession
> import org.apache.spark.sql.functions.current_timestamp
> import org.apache.spark.sql.streaming._
> import streaming.StreamingExamples
> object StructuredOrderStateListRturn {
> Logger.getLogger("org.apache.spark").setLevel(Level.WARN)
> StreamingExamples.setStreamingLogLevels()
> def main(args: Array[String]): Unit = {
> val spark = SparkSession
> .builder.master("local[*]")
> .appName("StructuredSessionization")
> .getOrCreate()
> import spark.implicits._
> // Create DataFrame representing the stream of input lines from
> connection to host:port
> val lines = spark.readStream
> .format("socket")
> .option("host", "10.200.102.192")
> .option("port", 9998)
> .load().withColumn("current_timestamp", current_timestamp)
> //100,1,10,20,2019-09-03
> //1001,1,10,200,2019-09-03
> //1001,1,10,2000,2019-09-03
> val events = lines
> .as[(String, Timestamp)]
> .map { case (line, timestamp) => {
> val orderInfo = line.split(",")
> if (orderInfo != null && orderInfo.size > 4) {
> val objEvent = NOEvent(orderInfo(0), orderInfo(1).toInt,
> orderInfo(2), orderInfo(3).toDouble, orderInfo(4), timestamp)
> objEvent
> } else {
> null
> }
> }
> }.filter(obj => obj != null)
> /**
> * -次维护订单状态数据，返回最新的一个订单，并把上一个订单金额附加返回
> */
> val orderUpdates = events
> .groupByKey(event => event.orderId)
> //orderInfoStore=输入的状态类型，orderInfoStoreUpdate=输出的状态类型
> .mapGroupsWithState[orderInfoStore,
> orderInfoStoreUpdate](GroupStateTimeout.ProcessingTimeTimeout) {
> case (orderId: String, events: Iterator[NOEvent], state:
> GroupState[orderInfoStore]) =>
> // 如果时间超时，更新缓存
> if (state.hasTimedOut) {
> //时间过了，删除sotre里的数据，把expired=true,返回在线时间等信息 0:00-0:10可以设这个时间，不计算，干掉数据
> val finalUpdate =
> orderInfoStoreUpdate(orderId, state.get.otype, state.get.storeId,
> state.get.money, 0.0, state.get.orderDate, state.get.timestamp, expired =
> true)
> state.remove()
> finalUpdate
> } else {
> //订单没有超时，如果id存在，则替换掉，使用新的订单数据，或作别的操作
> var oldOrder = 0.0 //上一笔的金额
> val lastEnvent = events.toSeq.last
> val updatedSession = if (state.exists) {
> oldOrder = state.get.money
> //存在,算出旧的金额是多少
> orderInfoStore(orderId, lastEnvent.otype, lastEnvent.storeId,
> lastEnvent.money, oldOrder, lastEnvent.orderDate, lastEnvent.timestamp)
> } else {
> orderInfoStore(orderId, lastEnvent.otype, lastEnvent.storeId,
> lastEnvent.money, 0, lastEnvent.orderDate, lastEnvent.timestamp)
> }
> //更新缓存里面的这条数据信息
> state.update(updatedSession)
> // Set timeout such that the session will be expired if no data
> received for 10 seconds
> state.setTimeoutDuration("3600 seconds")
> orderInfoStoreUpdate(orderId, state.get.otype, state.get.storeId,
> state.get.money, oldOrder, state.get.orderDate, state.get.timestamp, expired
> = false)
> }
> }
> /**
> * 二次计算出门店的数据
> */
> val storeUpdate = orderUpdates.groupByKey(order =>
> order.storeId).mapGroupsWithState[g1InfoStore,
> g1InfoStoreUpdate](GroupStateTimeout.ProcessingTimeTimeout) {
> case (storeId: String, events: Iterator[orderInfoStoreUpdate], state:
> GroupState[g1InfoStore]) =>
> // 如果时间超时，更新缓存
> if (state.hasTimedOut) {
> //时间过了，删除sotre里的数据，把expired=true,返回在线时间等信息 0:00-0:10可以设这个时间，不计算，干掉数据
> val finalUpdate =
> g1InfoStoreUpdate(storeId, state.get.num, state.get.money,
> state.get.timestamp, expired = true)
> state.remove()
> finalUpdate
> } else {
> var storeNum = events.map(_.orderId).size
> var storeMoney = events.map(_.money).reduce(_ + _) //其实只会一个
> val updatedStore = if (state.exists) { //门店存在，
> val old_order_moneys = events.map(_.oldMoney).reduce(_ + _)
> //其实只会一个
> //门店总客+=新订单金额-旧订单
> storeMoney = state.get.money + storeMoney - old_order_moneys
> g1InfoStore(storeId, state.get.num + events.map(_.orderId).size,
> storeMoney, state.get.timestamp)
> } else {
> g1InfoStore(storeId, storeNum, storeMoney, state.get.timestamp)
> }
> //更新缓存里面的这条数据信息
> state.update(updatedStore)
> // Set timeout such that the session will be expired if no data
> received for 10 seconds
> state.setTimeoutDuration("3600 seconds")
> g1InfoStoreUpdate(storeId, state.get.num, state.get.money,
> state.get.timestamp, expired = true)
> }
> }
> //门店统计好的数据在汇总
> // storeUpdate.createOrReplaceTempView("update_tmp")
> // spark.sql("select storeId,otype, count(1) num,sum(money) as moneys
> ,sum(oldMoney) as oldMoney from update_tmp group by storeId,otype ")
> val query = storeUpdate
> .writeStream
> .outputMode("update")
> .format("console")
> .start()
> query.awaitTermination()
> }
> }
> /** User-defined data type representing the input events */
> case class NOEvent(orderId: String, otype: Int, storeId: String, money:
> Double, orderDate: String, timestamp: Timestamp)
> case class orderInfoStore(orderId: String, otype: Int, storeId: String,
> money: Double, oldMoney: Double, orderDate: String, timestamp: Timestamp)
> case class orderInfoStoreUpdate(orderId: String, otype: Int, storeId: String,
> money: Double, oldMoney: Double, orderDate: String, timestamp: Timestamp,
> expired: Boolean)
> /** 第一个分组信息 */
> case class g1InfoStore(storeid: String,/* otype: Int,*/ num: Int, money:
> Double, timestamp: Timestamp)
> case class g1InfoStoreUpdate(storeid: String,/* otype: Int,*/ num: Int,
> money: Double, timestamp: Timestamp, expired: Boolean)
> {code}
>
>
>
> I changed the way to maintain a list of orders in the store, and then to
> maintain the list and re-operate the calculation. However, in this way, I
> will maintain the details of the first-line data, and I will temporarily use
> many resources. I wonder if there is any other way to deal with this kind of
> data.
> {code:java}
> package org.roy.demo.streaming.bus
> import java.sql.Timestamp
> import org.apache.log4j.{Level, Logger}
> import org.apache.spark.sql.SparkSession
> import org.apache.spark.sql.functions.current_timestamp
> import org.apache.spark.sql.streaming._
> import streaming.StreamingExamples
> /**
> * create by Roy 2019/09/06
> * Counting day order number and amount
> */
> object StructuredStoreOrderState {
> Logger.getLogger("org.apache.spark").setLevel(Level.WARN)
> StreamingExamples.setStreamingLogLevels()
> def main(args: Array[String]): Unit = {
> val spark = SparkSession
> .builder.master("local[*]")
> .appName("StructuredSessionization")
> .getOrCreate()
> import spark.implicits._
> // Create DataFrame representing the stream of input lines from
> connection to host:port
> val lines = spark.readStream
> .format("socket")
> .option("host", "10.200.102.192")
> .option("port", 9998)
> .load().withColumn("current_timestamp", current_timestamp)
> //100,1,10,20,2019-09-03
> //1001,1,10,200,2019-09-03
> //1001,1,10,2000,2019-09-03
> val events = lines
> .as[(String, Timestamp)]
> .map { case (line, timestamp) => {
> val orderInfo = line.split(",")
> if (orderInfo != null && orderInfo.size > 4) {
> val objEvent = dataEvent(orderInfo(0), orderInfo(1).toInt,
> orderInfo(2), orderInfo(3).toDouble, orderInfo(4), timestamp)
> objEvent
> } else {
> null
> }
> }
> }.filter(obj => obj != null)
> val orderUpdates = events
> .groupByKey(event => event.storeId)
> .mapGroupsWithState[storeOrderInfoState,
> storeOrderInfoStateUpdate](GroupStateTimeout.ProcessingTimeTimeout) {
> case (key: String, values: Iterator[dataEvent], state:
> GroupState[storeOrderInfoState]) =>
> val seqs = values.toSeq
> val times = seqs.map(_.timestamp).seq
> val max_time = new Timestamp(System.currentTimeMillis())
> if (state.hasTimedOut) {
> val finalUpdate =
> storeOrderInfoStateUpdate(key, state.get.orderNum,
> state.get.orderMoney, max_time, expired = true)
> state.remove()
> finalUpdate
> } else {
> val updatedSession = if (state.exists) {
> val stateMap = state.get.orderInfoStoreMap
> var norderMap2: Map[String, Double] = Map()
> var num = 0
> var money = 0.0
> seqs.foreach(e => {
> if (stateMap.contains(e.orderId)) {
> //新订单-旧订单，再进行+总合
> money += e.money - stateMap.get(e.orderId).get
> } else {
> num += 1
> money += e.money
> }
> norderMap2 += (e.orderId -> e.money)
> })
> //取出所有的订单+流进来的订单，需要判断是否有重复订单
> storeOrderInfoState(key, state.get.orderNum + num,
> state.get.orderMoney + money, stateMap ++ norderMap2, max_time)
> } else {
> var norderMap2: Map[String, Double] = Map()
> var money = 0.0
> seqs.foreach(e => {
> money += e.money
> norderMap2 += (e.orderId -> e.money)
> })
> storeOrderInfoState(key, norderMap2.size, money, norderMap2,
> max_time)
> }
> //更新缓存里面的这条数据信息
> println("updatedSession" + updatedSession)
> println(updatedSession.orderMoney)
> state.update(updatedSession)
> // Set timeout such that the session will be expired if no data
> received for 10 seconds
> state.setTimeoutDuration("3600 seconds")
> storeOrderInfoStateUpdate(key, state.get.orderNum,
> state.get.orderMoney, max_time, expired = false)
> }
> }
> val query = orderUpdates
> .writeStream
> .outputMode("update")
> .format("console")
> .start()
> query.awaitTermination()
> }
> }
> /** User-defined data type representing the input events */
> case class dataEvent(orderId: String, otype: Int, storeId: String, money:
> Double, orderTime: String, timestamp: Timestamp)
> //最一个订单状态
> case class orderEnventInfo(orderId: String, otype: Int, storeId: String,
> money: Double, orderTime: String, timestamp: Timestamp)
> //门店里面，维护一张所有订单，sotre orderInfoStoreMap: Map[String, orderEnventInfo]
> Seq[orderEnventInfo]
> case class storeOrderInfoState(storeId: String, orderNum: Int, orderMoney:
> Double, orderInfoStoreMap: Map[String, Double], timestamp: Timestamp)
> //返回计算后的结果
> case class storeOrderInfoStateUpdate(storeId: String, orderNum: Int,
> orderMoney: Double, timestamp: Timestamp,
> expired: Boolean)
> {code}
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