cloudFiles.schemaEvolutionMode 指定为 addNewColumns,如果架构不匹配,则会添加新列,并将 mergeSchema 指定为 true。然后,按照上述任意一种方式对其进行重命名。 df = spark.readStream.format("cloudFiles") \ .option("cloudFiles.format", "csv") \ .option("cloudFiles.schemaEvolutionMode", "addNewColu...
我解决了这个问题。问题是我们在模式文件中错误地有重复的列。因为它显示了这个错误。但是，这个错误完全...
1.检查read location和write location的权限 1.检查schemaLocation路径是否正确 1.检查并更新spark和delta ...
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Open File Formats (Alphabetical) \n\n Proprietary File Formats (Alphabetical) \n \n avro \n\n db2 \n \n csv \n\n dbf \n \n delta \n\n mdf \n \n frm \n\n \n \n json \n\n \n \n pgdata (folder) \n\n \n
db2 \n \n csv \n\n dbf \n \n delta \n\n mdf \n \n frm \n\n \n \n json \n\n \n \n pgdata (folder) \n\n \n \n xml \n\n \n \n Streaming data source use case from streaming source (Event-based not like the RDBMS CDC example in...