org.apache.phoenix.spark.SparkContextFunctions.scala Maven / Gradle / Ivy
/*
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.phoenix.spark
import org.apache.hadoop.conf.Configuration
import org.apache.spark.SparkContext
import org.apache.spark.rdd.RDD
class SparkContextFunctions(@transient val sc: SparkContext) extends Serializable {
/*
This will return an RDD of Map[String, AnyRef], where the String key corresponds to the column
name and the AnyRef value will be a java.sql type as returned by Phoenix
'table' is the corresponding Phoenix table
'columns' is a sequence of of columns to query
'predicate' is a set of statements to go after a WHERE clause, e.g. "TID = 123"
'zkUrl' is an optional Zookeeper URL to use to connect to Phoenix
'conf' is a Hadoop Configuration object. If zkUrl is not set, the "hbase.zookeeper.quorum"
property will be used
*/
def phoenixTableAsRDD(table: String, columns: Seq[String], predicate: Option[String] = None,
zkUrl: Option[String] = None, tenantId: Option[String] = None, conf: Configuration = new Configuration())
: RDD[Map[String, AnyRef]] = {
// Create a PhoenixRDD, but only return the serializable 'result' map
new PhoenixRDD(sc, table, columns, predicate, zkUrl, conf, tenantId = tenantId).map(_.result)
}
}