本文簡要介紹 python 語言中 pyflink.datastream.OutputTag
的用法。
用法:
class pyflink.datastream.OutputTag(tag_id: str, type_info: Union[pyflink.common.typeinfo.TypeInformation, list, None] = None)
基礎:
object
OutputTag
是一個類型化且命名的標簽,用於標記操作符的側麵輸出。例子:
# Explicitly specify output type >>> info = OutputTag("late-data", Types.TUPLE([Types.STRING(), Types.LONG()])) # Implicitly wrap list to Types.ROW >>> info_row = OutputTag("row", [Types.STRING(), Types.LONG()]) # Implicitly use pickle serialization >>> info_side = OutputTag("side") # ERROR: tag id cannot be empty string (extra requirement for Python API) >>> info_error = OutputTag("")
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注:本文由純淨天空篩選整理自apache.org大神的英文原創作品 pyflink.datastream.OutputTag。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。