使用hudi-spark-client写数据到hudi表中
时间: 2024-01-17 16:13:13 浏览: 142
使用hudi-spark-client写数据到hudi表的步骤如下:
1. 首先,创建一个SparkSession对象,并配置相关的Spark和Hudi属性。例如:
```scala
val spark = SparkSession.builder()
.appName("HudiSparkClientExample")
.config("spark.serializer", "org.apache.spark.serializer.KryoSerializer")
.config("spark.sql.hive.convertMetastoreParquet", "false")
.config("spark.sql.sources.partitionColumnTypeInference.enabled", "false")
.config("spark.sql.hive.verifyPartitionPath", "false")
.config("spark.hadoop.hive.exec.dynamic.partition.mode", "nonstrict")
.config("spark.hadoop.hive.exec.dynamic.partition", "true")
.config("spark.sql.warehouse.dir", "hdfs://localhost:9000/user/hive/warehouse")
.config("spark.sql.catalogImplementation", "hive")
.enableHiveSupport()
.getOrCreate()
```
2. 创建一个DataFrame对象,用于存储要写入Hudi表的数据。
```scala
val data = Seq(
(1, "John Doe", 25),
(2, "Jane Smith", 30)
)
val df = spark.createDataFrame(data).toDF("id", "name", "age")
```
3. 使用`HoodieSparkSqlWriter`将DataFrame写入Hudi表。指定要写入的表名、要使用的主键列以及要使用的分区列。
```scala
df.write
.format("org.apache.hudi")
.option("hoodie.table.name", "my_hudi_table")
.option("hoodie.datasource.write.precombine.field", "id")
.option("hoodie.datasource.write.recordkey.field", "id")
.option("hoodie.datasource.write.partitionpath.field", "age")
.mode(SaveMode.Append)
.save("hdfs://localhost:9000/path/to/hudi_table")
```
4. 最后,关闭SparkSession对象。
```scala
spark.stop()
```
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