sink

问题 I have a very very big table of correlation values that i would like to save in a file. That actually do: sink("/to/path/file.csv") cor(total) sink() that writes something like in the file: a b c d r 0.635391844 0.316249555 0.715476998 0.138705124 y 1.000000000 0.245008313 0.927208342 0.109602263 z 0.245008313 1.000000000 0.239142304 0.080837639 t 0.927208342 0.239142304 1.000000000 0.131402452 h 0.109602263 0.080837639 0.131402452 1.000000000 e 0.996816365 0.247379819 0.930169663 0.108444557

问题 I have a very very big table of correlation values that i would like to save in a file. That actually do: sink("/to/path/file.csv") cor(total) sink() that writes something like in the file: a b c d r 0.635391844 0.316249555 0.715476998 0.138705124 y 1.000000000 0.245008313 0.927208342 0.109602263 z 0.245008313 1.000000000 0.239142304 0.080837639 t 0.927208342 0.239142304 1.000000000 0.131402452 h 0.109602263 0.080837639 0.131402452 1.000000000 e 0.996816365 0.247379819 0.930169663 0.108444557

问题 The text_with_headers serializer (HDFS sink serializer) allows to save the Flume event headers rather than discarding them. The output format consists of the headers, followed by a space, then the body payload. We would like to drop the body and retain the headers only. For the HBase sink, the "RegexHbaseEventSerializer" allows us to transform the events. But I am unable to find such a provision for the HDFS sink. 回答1: You can set serializer property to header_and_text , which outputs both

问题 As a step in switching from NLog to Serilog, I want to redirect the standard wiring underlying standard invocations of NLog's LogManager.GetLogger(name) to Bridge any code logging to NLog to forward immediately to the ambient Serilog Log.Logger - i.e. I want to just one piece of config that simply forwards the message, without buffering as Log4net.Appender.Serilog does for Log4net. Can anyone concoct or point me to a canonical snippet that does this correctly and efficiently please?

问题 I have the following request library(RCurl) res=getURL("http://www.google.com/search?hl=en&lr=&ie=ISO-8859-1&q=RCurl&btnG=Search", .opts=list(verbose = TRUE) ) and would like to capture the verbose output of the call (i.e., what is printed in red in the R console). I thought that the output lines are messages and are therefore printed to stderr() . The following works for messages sink(textConnection("test","w"),type="message") message("test message") sink(stderr(),type="message") test #[1]

问题 I currently have this configuration in Flume : # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://www.apache.org/licenses

问题 I'm rather new to R and I guess there's more than one thing inadequate practice in my code (like, using a for loop). I think in this example, it could be solved better with something from the apply-family, but I would have no idea how to do it in my original problem - so, if possible, please let the for-loop be a for-loop. If something else is bad, I'm happy to hear your opinion. But my real problem is this. I have: name <- c("a", "a", "a", "a", "a", "a","a", "a", "a", "b", "b", "b","b", "b",

问题 i'm in a project using spark 2.2 struct streaming to read kafka msg into oracle database. the message flow into kafka is about 4000-6000 messages per second . when using hdfs file system as sink destination ,it just works fine. when using foreach jdbc writer,it will have a huge delay over time . I think the lag is caused by foreach loop . the jdbc sink class(stand alone class file): class JDBCSink(url: String, user: String, pwd: String) extends org.apache.spark.sql.ForeachWriter[org.apache

问题 I am in the middle of generating a HTML report in Rstudio via pandoc for a collaborator. However pander is hitting the sink limit in R when trying to generate the output for the following summary of a lm() object. My R instance: version _ platform x86_64-apple-darwin13.1.0 arch x86_64 os darwin13.1.0 system x86_64, darwin13.1.0 status major 3 minor 1.0 year 2014 month 04 day 10 svn rev 65387 language R version.string R version 3.1.0 (2014-04-10) nickname Spring Dance The lm I am trying to

问题 I am trying to write a series of characters and numerical values using sprintf and sink: sink("sample.txt", append=TRUE, split=TRUE) sprintf("Hello World") of course, the above is an example, so I don't have the numerical values from a data frame above, but I need to use sprintf. The output in the text file (sample.txt) looks like this: [1] Hello World How do I remove the [1] from the line? Is there a way so the [1] won't write to the file? 回答1: Two options spring to mind, using cat() or