如何将Spark结构化流数据写入Hive? [英] How to write Spark Structured Streaming Data into Hive?
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问题描述
如何将Spark结构化流数据写入Hive?
有 df.write()。saveAsTable(tablename)
但是我不确定这是否写入流数据
我通常做 df.writeStream()。trigger(new ProcessingTime(1000))。foreach(new KafkaSink())。start()
将流式数据写入Kafka,但我没有看到类似于将流式数据写入Hive数据仓库的内容。任何想法?
解决方案
df.createOrReplaceTempView(mytable)
spark .sql(将table mytable as select * from mytable);
或
<$ 。C $ C> df.write()模式(SaveMode.Overwrite).saveAsTable( dbName.tableName);
How to write Spark Structured Streaming Data into Hive?
There is df.write().saveAsTable(tablename)
however I am not sure if this writes streaming data
I normally do df.writeStream().trigger(new ProcessingTime(1000)).foreach(new KafkaSink()).start()
to write streaming data into Kafka but I don't see anything similar to write streaming data into Hive data warehouse. any ideas?
解决方案
df.createOrReplaceTempView("mytable")
spark.sql("create table mytable as select * from mytable");
or
df.write().mode(SaveMode.Overwrite).saveAsTable("dbName.tableName");
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