Use spark to interact with ElasticSearch

Use the elasticsearch-hadoop package to search for the item in github

example

import org.elasticsearch.spark._
import org.elasticsearch.spark.sql._

val conf = new SparkConf()
    .set("es.nodes","192.168.47.155")
    .set("es.port","9200")
    .setMaster("spark://...")
    .setAppName("es_hdfs")

val sc = new SparkConf(sc)

//查询合作方为abc的数据
val query = """{"query":{"match":{"activity.partnerCode": "abc"}}}"""

//将在es中的查询结果转化为rdd/dataFrame
val esRdd = sc.esRDD(s"index/type",query)
//直接读入全部数据
val esDf = sqlContext.esDF(s"index/type")

//对读入rdd/dataFrame进行操作
esRdd.map(r=>{...})
esDf.flatMap(r=>{......})

//将dataFrame/rdd写入es
esRdd.saveToEs("index/type")
resultDf.saveToEs("index/type")

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