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
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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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