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import org.apache.spark.sql.DataFrameReader | |
def configureReaderWithElasticSearch(options: Map[String,String]) : DataFrameReader = { | |
val fr = spark.read.format("es") | |
def go(fr: DataFrameReader, optMap: Map[String, String]) = | |
optMap.foldLeft(fr)((reader, c) => reader.option(c._1, c._2)) | |
go(fr, options) | |
} | |
def loadDataFromElasticSearch(index: String)(reader: DataFrameReader) : DataFrame = | |
reader.load(s"$index/$index") | |
def loadDataFromES2(cluster: String) : Map[String,String] => DataFrame = | |
(loadDataFromElasticSearch(cluster) _) compose configureReaderWithElasticSearch | |
def loadClusters2(issueTypeId: String): DataFrame = { | |
val esConfigOptions = Map( | |
ConfigurationOptions.ES_NODES_WAN_ONLY -> Settings.esWanOnly, | |
ConfigurationOptions.ES_PORT -> Settings.esPort, | |
ConfigurationOptions.ES_NODES -> Settings.esNodes, | |
"es.read.metadata" -> "true" | |
) | |
val clusters = loadDataFromES2("cluster")(esConfigOptions) | |
.withColumn("id", $"_metadata._id") | |
.drop("_metadata", "changeRequestIds", "comments", "rate", "clusterId", "originalId") | |
.filter($"issueTypeId" === issueTypeId) | |
addColumnsToDataframe(clusters, joinColumns.toArray) | |
} | |
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