Scala CSV file to Save data into HBase

+1 vote
I want to Create Schema in Hbase. Develop code to connect to Hbase, Read Data and Write Data. How to do this?
Jul 25, 2019 in Apache Spark by Lohit
678 views

1 answer to this question.

0 votes

Check the reference code mentioned below:

def main(args: Array[String]): Unit = {


    val spark = SparkSession.builder().appName("sparkToHive").enableHiveSupport().getOrCreate()

    import spark.implicits._


    val config = HBaseConfiguration.create()

    config.set("hbase.zookeeper.quorum", "ip's")

    config.set("hbase.zookeeper.property.clientPort","2181")

    config.set(TableInputFormat.INPUT_TABLE, "tableName")


    val newAPIJobConfiguration1 = Job.getInstance(config)

    newAPIJobConfiguration1.getConfiguration().set(TableOutputFormat.OUTPUT_TABLE, "tableName")

    newAPIJobConfiguration1.setOutputFormatClass(classOf[TableOutputFormat[ImmutableBytesWritable]])


    val df: DataFrame = Seq(("foo", "1", "foo1"), ("bar", "2", "bar1")).toDF("key", "value1", "value2")


    val hbasePuts= df.rdd.map((row: Row) => {

      val put = new Put(Bytes.toBytes(row.getString(0)))

      put.addColumn(Bytes.toBytes("cf1"), Bytes.toBytes("value1"), Bytes.toBytes(row.getString(1)))

      put.addColumn(Bytes.toBytes("cf2"), Bytes.toBytes("value2"), Bytes.toBytes(row.getString(2)))

      (new ImmutableBytesWritable(), put)

    })


    hbasePuts.saveAsNewAPIHadoopDataset(newAPIJobConfiguration1.getConfiguration())

    }
answered Jul 25, 2019 by Hari

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