Hi, My spark job writes into oracle db using:
df.coalesce(10).write.format("jdbc").option("url", url) .option("driver", driver).option("user", user) .option("batchsize", 2000) .option("password", password).option("dbtable", tableName).mode("append").save() It is much slow than writting into HDFS. The data to write is small. Is this expected? Thanks for any clue.