streaming

问题 I am trying to do what should be a simple task: I need to convert a text file to upper case using Hadoop streaming with Python. I want to do it by using the TextInputFormat which passes file position keys and text values to the mappers. The problem is that Hadoop streaming automatically discards the file position keys, which are needed to preserve the ordering of the document. How can I retain the file position information of the input to the mappers? Or is there a better way to convert a

问题 I am trying to do what should be a simple task: I need to convert a text file to upper case using Hadoop streaming with Python. I want to do it by using the TextInputFormat which passes file position keys and text values to the mappers. The problem is that Hadoop streaming automatically discards the file position keys, which are needed to preserve the ordering of the document. How can I retain the file position information of the input to the mappers? Or is there a better way to convert a

问题 I have a webbrowser object on a winform that I would like to use to display a pdf. The pdf resides on a ftp server. I have been able to show the pdf by downloading it to the disk and pointing the webbrowser object to it (navigate), but I want to stream it for security reasons. Has anyone been able to stream a pdf to a webbrowser that is located on a .Net winform? Dim URI As String = host & targetFilename Dim ftp As System.Net.FtpWebRequest = CType(FtpWebRequest.Create(URI), FtpWebRequest) ftp

问题 I am new to Azure event hub. With the event hub, we receive data from IoT device and the data are partitioned into two streams by assigning partition number "0" and " 1". The reason why we need two streams is that one is needed for training the "deep learning model" and another one is needed for testing the model we trained with new data coming in from the other side. This is called "online learning". However, in the case where we do not have a training model yet, we are not able to test it

问题 I'm trying to develop a very simple proof-of-concept to retrieve and process data in a streaming manner. The server I'm requesting from will send data in chunks, which is good, but I'm having issues using httplib to iterate through the chunks. Here's what I'm trying: import httplib def getData(src): d = src.read(1024) while d and len(d) > 0: yield d d = src.read(1024) if __name__ == "__main__": con = httplib.HTTPSConnection('example.com', port='8443', cert_file='...', key_file='...') con

问题 I am trying to figure out why my NetTcpBinding Service is not maintaining state, as expected. (Perhaps I did it wrong) I have a WCF service with the following structure(simplified): Message Contract [MessageContract] public class StreamMetaData { [MessageHeader] public string Info {get; set;} [MessageBodyMember] public Stream Data { get; set; } } Contract ServiceContract(SessionMode = SessionMode.Allowed)] public interface IMyService { [OperationContract] void Init(StreamMetaData metaData);

问题 I am making screen share java based application. I am done with encoding frames into H264 using JCodec java Library. I have Picture data in Byte Buffer. How I will send these encoded frames to Wowza through rtmp client? Can Wowza recognize the H264 encoded frames, Encoded by Jcodec library? 回答1: Pretty much any of the "flash" media servers will understand h264 data in a stream. You'll need to encode your frames with baseline or main profile and then "package" the encoded bytes into flv

问题 I have a file to store in mongoDB. What I want is to avoid loading the whole file (which could be several MBs in size) instead I want to open the stream and direct it to mongoDB to keep the write operation performant. I dont mind storing the content in base64 encoded byte[]. Afterwards I want to do the same at the time of reading the file i.e. not to load the whole file in memory, instead read it in a stream. I am currently using hibernate-ogm with Vertx server but I am open to switch to a

问题 I have a file to store in mongoDB. What I want is to avoid loading the whole file (which could be several MBs in size) instead I want to open the stream and direct it to mongoDB to keep the write operation performant. I dont mind storing the content in base64 encoded byte[]. Afterwards I want to do the same at the time of reading the file i.e. not to load the whole file in memory, instead read it in a stream. I am currently using hibernate-ogm with Vertx server but I am open to switch to a

问题 I've got a large JSON Object which I need to return from an MVC ApiController. I can't simply return the JSON Object as the internal serializer barfs on the serialized contents being too long. I don't want to serialize to string and then return the string as we could be dealing 5-6MB of data and that seems like a waste of memory for no purpose. What I want to do is use the Newtonsoft JSON Serializer to write to the response stream directly. Dim Ret = Client.Search(Model) ''Get the results