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在hadoop中,我只想在每个节点上执行自己的自定义程序(In hadoop, I just want to execute my own custom program on each node)
在hadoop中,我只想在每个节点上执行自己的自定义程序(In hadoop, I just want to execute my own custom program on each node)
是的,我想在每个hadoop节点上运行我的自定义程序。 我想部署No mapper和reducer。 它就像分布式计算系统不像mapreduce(但在内部使用hdfs)。 我应该怎么做?
Yes, I want to run my custom program on each hadoop node. I want to deploy No mapper and reducer. It is just like distributed computing system that doesn't works like mapreduce(but which uses hdfs internally). How should I do?
原文:https://stackoverflow.com/questions/39460414
更新时间:2024-02-07 11:02
最满意答案
您应该发布一些关于您尝试过的内容。 也许给我们一些示例代码和您遇到的问题。 话虽如此,请参阅下文。 在没有看到您的解决方案细节的情况下,有很多不同的方法。
SET DATEFIRST 2; DECLARE @SalesData TABLE (ID INT PRIMARY KEY IDENTITY(1,1), SalesDate DATETIME, Price MONEY) INSERT INTO @SalesData (SalesDate,Price) VALUES ('1/1/2013',12.00), ('1/2/2013',14.00), ('1/3/2013',11.28), ('5/3/2013',11.64), ('5/3/2013',18.00) ;WITH SalesInfo AS ( SELECT sd.id, YEAR(sd.SalesDate) AS TheYear, DATEPART(week,sd.SalesDate) AS TheWeek FROM @SalesData sd ) SELECT SI.TheYear, SI.TheWeek, SUM(SD.Price) AS TotalForWeek FROM @SalesData AS SD INNER JOIN SalesInfo AS SI ON (SD.ID = SI.ID) GROUP BY SI.TheYear,SI.TheWeek SET DATEFIRST 7
You should post a bit more about what you've tried. Maybe give us some sample code and problems you are having. That being said please see below. Without seeing your solutions specifics there's a lot of different approaches to this.
SET DATEFIRST 2; DECLARE @SalesData TABLE (ID INT PRIMARY KEY IDENTITY(1,1), SalesDate DATETIME, Price MONEY) INSERT INTO @SalesData (SalesDate,Price) VALUES ('1/1/2013',12.00), ('1/2/2013',14.00), ('1/3/2013',11.28), ('5/3/2013',11.64), ('5/3/2013',18.00) ;WITH SalesInfo AS ( SELECT sd.id, YEAR(sd.SalesDate) AS TheYear, DATEPART(week,sd.SalesDate) AS TheWeek FROM @SalesData sd ) SELECT SI.TheYear, SI.TheWeek, SUM(SD.Price) AS TotalForWeek FROM @SalesData AS SD INNER JOIN SalesInfo AS SI ON (SD.ID = SI.ID) GROUP BY SI.TheYear,SI.TheWeek SET DATEFIRST 7
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试试这个,它可能对你有帮助
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