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我有一堆这样创建的镶木地板文件:

dd.to_parquet(df, 'dir/of/parquet', partition_on=['month', 'day'], engine='fastparquet')

我曾经读过这样的列子集:

raw_data_view = dd.read_parquet('data/raw_data_fast_par.par', columns=['@timestamp', 'http_user','dst', 'dst_port', 'http_req_method', 'http_req_header_host', 'http_req_header_referer', 'http_req_header_useragent', 'http_req_secondleveldomain'],
                       engine='fastparquet', filters=[('@timestamp', '>=', np.datetime64(start)), ('@timestamp', '<', np.datetime64(end))])

在更新到dask 2.2.0最新的 fastparquet 之前,它可以正常工作。现在我收到了这些消息。在执行读取命令时:

RuntimeWarning: Multiple sorted columns found, cannot autodetect index
RuntimeWarning,

并在调用计算时:

ValueError: The columns in the computed data do not match the columns in the provided metadata
Expected: ['@timestamp', 'http_user', 'dst', 'dst_port', 'http_req_method', 'http_req_header_host', 'http_req_header_referer', 'http_req_header_useragent', 'http_req_secondleveldomain']
Actual:   ['@timestamp', 'http_user', 'dst', 'dst_port', 'http_req_method', 'http_req_header_host', 'http_req_header_referer', 'http_req_header_useragent', 'http_req_secondleveldomain', 'month', 'day']

有什么改变吗?

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