chunks

问题 I have a spring-batch xml-based configuration that should be migrated to annotation-based configuration. but I can't find any solution to define a chunk into the tasklet definition. There are my xml and code base decleration: <step id="files2Memory"> <tasklet> <chunk reader="pointFileReader" processor="pointFileProcessor" writer="pointFileWriter" commit-interval="50000"/> </tasklet> </step> public Step files2Memory() { return stepBuilders.get("files2Memory") .tasklet(new Tasklet() { @Override

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 13 days ago . I have a list: first = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18] I want another list with mean of three values and so the new list be: new = [2,5,8,11,14,17] There will be only 6 values in the new list as there are only 18 elements in the first. I am looking for an elegant way to do this with

问题 I really appreciate some help here, in this case, I would Like to separate my vendor.js and my main.js at the final build operation. I've tried that before to loop through in my package.json devDependency for separate my third party libraries and put it into vendor.js, it is working correctly but it produces vendor.js that is unnecessary in building process since my third library already is in my main.js here is my weppack.config.js var config = { devtool: 'eval-source-map', cache: true,

问题 This question already has answers here : How do you split a list into evenly sized chunks? (62 answers) binning data in python with scipy/numpy (6 answers) Closed 2 years ago . I have a text file in which I have, for example, 1084 elements. I list them. import csv a = [] with open('example.txt', 'r') as csvfile: file_name = csv.reader(csvfile, delimiter='\t') for row in file_name: a.append(int(row[1])) print(a) [144, 67, 5, 23, 64...456, 78, 124] Next, I need to take the average of every one

问题 Situation I'm trying to load a library with Webpack. The library itself has been split up using Webpack into multiple chunks. Project A has a dependency on project B. Project B has been built with Webpack and consists of multiple chunks. Project A now loads project B through a dynamic import. When project A is built, I would like the chunks of project B to be created in the output folder of project A. Question How do I get the chunks of project B to persist as chunks in the final build of the

问题 I want to read the file f in chunks to a dataframe. Here is part of a code that I used. for i in range(0, maxline, chunksize): df = pandas.read_csv(f,sep=',', nrows=chunksize, skiprows=i) df.to_sql(member, engine, if_exists='append',index= False, index_label=None, chunksize=chunksize) I get the error: pandas.io.common.EmptyDataError: No columns to parse from file The code works only when the chunksize >= maxline (which is total lines in file f). However, in my case, the chunksize<=maxline.

问题 I want to read a log file in different chunks to make it multi threaded. The application is going to run in a serverside environment with multiple hard disks. After reading into chunks the app is going to process line per line of every chunk. I've accomplished the reading of every file line line with a bufferedreader and I can make chunks of my file with RandomAccessFile in combination with MappedByteBuffer, but combining these two isn't easy. The problem is that the chunk is just cutting

问题 I uploading zip file using chunk method. After some iteration completed in while loop TotalParts variable automatically changed to some value. When connected to debugger its works fine for some time, but when disconnected again value changed for some files. But, after some iteration finally it will upload.Value is changing in Jsonbody in http service. Actually TotalParts variable is final and also not declared inside while loop, although its changing to some value. public Boolean uploadFile

问题 I have 2 files with 38374732 lines in each and size 3.3 G each. I am trying to join them on the first column. For doing so I decided to use pandas with the following code that pulled from Stackoverflow: import pandas as pd import sys a = pd.read_csv(sys.argv[1],sep='\t',encoding="utf-8-sig") b = pd.read_csv(sys.argv[2],sep='\t',encoding="utf-8-sig") chunksize = 10 ** 6 for chunk in a(chunksize=chunksize): merged = chunk.merge(b, on='Bin_ID') merged.to_csv("output.csv", index=False,sep='\t')

问题 For the educational purposes, I wanted to create file chunks upload. How do you guys know when all of the chunks are uploaded? I tried to move chunks from temp and renaming them so they are in correct order, and then with the last chunk merge them together. However the last piece sent is not the last piece received, I guess. So fopen() on chunks fails since they're not created yet, and I get final file with the size exactly the size of the last chunk. I believe I could send chunks one by one