How to Overwrite the existing files using hadoop fs -copyToLocal command
Is there any way we can overwrite existing files, while coping from
hadoop fs -copyToLocal <HDFS PATH> <local path>
How to trigger a jar working on Hadoop from a simple jar, so that it uses HDFS, Actully, I am manually running this command bin/hadoop jar ~/wordcount_classes/word.jar org.myorg.WordCount ~/hadoop-0.2
I am looking for an example which is using the new API to read and write Sequence Files. Effectively I need to know how to use these functions createWriter(Configuration conf, org.apache.hadoop.io.Se
I have submitted a file with size 1 GB and I want to split this file in files with size 100MB. How can I do that from the command line. I'm searching for a command like: hadoop fs -split --bytes=100m
i need to run hadoop command in bash script, which go through bunch of folders on amazon S3, then write those folder names into a txt file, then do further process. but the problem is when i ran the s
In node application i need to get all the files in the directory except that hidden files. I have tried fs.readdir but it displaying hidden files also.
A fast method for inspecting files on HDFS is to use tail: ~$ hadoop fs -tail /path/to/file This displays the last kilobyte of data in the file, which is extremely helpful. However, the opposite comm
I'm thinking about using hadoop to process large text files on my existing windows 2003 servers (about 10 quad core machines with 16gb of RAM) The questions are: Is there any good tutorial on how to
I have saved my crawled data by nutch in Hbase whose file system is hdfs. Then I copied my data (One table of hbase) from hdfs directly to some local directory by command hadoop fs -CopyToLocal /hbase
I am building a Java application to process files on a local FS (NTFS, but a solution that would allow an easy extension to Linux filesystems in future would be nice). The problem is that a single fil
I'm using Cloudera VM (cdh3u2) as a simulated distributed file system. In order to perform file creation and writing from a web server I changed the fs.http.address property to point to the VM IP. Thi
I have added Products.Reflecto 2.5.1 in my Plone 4.1 on linux debian. Hence the files on the File system are directly accessible, But I cannot access these files for editing.For example Products.Image
I need to move the files from one HDFS directory to another HDFS directory. I wanted to check if there's some easier way (some HDFS API) to achieve the same task, other than InputStream/OutputStream ?
This is driving me nuts... I have been trying to pass a variable to a custom resolver, but it seems impossible to do. I am currently using the following approach, but the value that is passed to the
I uesd to manage a cluster of only 3 Centos machines running Hadoop. So scp is enough for me to copy the configuration files to the other 2 machines. However, I have to setup a Hadoop cluster to more
I've created PHPStorm project based on existing files (Web server is on remote host, files are accessible via mounted drive). I've included some folders and excluded some ones. How to add existing fol
I have a python program which I then compile with cx_freeze that updates itself by downloading a zip file and then overwriting files. Thing is, whenever I execute it, this happens: Traceback (most rec
We have a Hadoop cluster (Hadoop 0.20) and I want to use Nutch 1.2 to import some files over HTTP into HDFS, but I couldn't get Nutch running on the cluster. I've updated the $HADOOP_HOME/bin/hadoop s
i am new to learning hdfs and have single node hadoop(version 2.2.0) set up over centos box. after start-all command i am trying to run some of the hdfs commands but below mentioned is not working. b
I want set this configuration textinputformat.record.delimiter=; to the hadoop. Right now i use the following code to run pig script on ami. Anyone knows how to set this configuration by using the f
I'm trying to upload a file to SkyDrive using Live SDK. It works well except overwriting existing files. Whenever I try to overwrite an existing file I get the error message The resource file_name al
I am new to Map Reduce, I have done indexing documents in solr by using Map Reducing. Now i would like to know how to index a HBase table in solr by using Hadoop Map Reduce program.
I can't seem to find a way to copy an existing file but I do not want to let the previous file with the same name get overwritten. Let say I want to copy data.txt from various pc's by using batch file
I'm using the command fs -put to copy a huge 100GB file into HDFS. My HDFS block size is 128MB. The file copy takes a long time. My question is while the file copy is in progress, the other users are
When I use the cp command in the bash shell with the --update options, which copy only when the source file is newer than the destination file. I don't know how to get the already copied files list. A
I want to run the following command: hadoop fs -copyToLocal FILE_IN_HDFS | ssh REMOTE_HOST dd of=TARGET_FILE However, when I try, all it does, is create an empty file on the target host and copy i
I run hadoop map red jobs from a remote machine ( windows ) using the command java -jar XMLDriver.jar -files junkwords.txt -libjars XMLInputFormat.jar and submit job to a linux box which runs hadoop.
Here I make a database system which uses the git as a content addressable filesystem. In the git repository, we only use low level command for adding blob objects, and then we will save the file name
I am learning Python and Hadoop. I completed the setup and basic examples provided in official site using pythong+hadoop streaming. I considered implementing join of 2 files. I completed equi-join whi
I'am are trying to implement a Web SSO with claim based identity using WIF and AD FS 2.0 right now. Right now I have a existing ASP.Net application which delegates authentification to the AD FS 2.0 se
I have constructed a single-node Hadoop environment on CentOS using the Cloudera CDH repository. When I want to copy a local file to HDFS, I used the command: sudo -u hdfs hadoop fs -put /root/MyHadoo
It is the first time I'm running a job on hadoop and started from WordCount example. To run my job, I', using this command hduser@ubuntu:/usr/local/hadoop$ bin/hadoop jar hadoop*examples*.jar wordcoun
I am a newbie trying to understand how will mahout and hadoop be used for collaborative filtering. I m having single node cassandra setup. I want to fetch data from cassandra Where can I find clear i
I have a bunch of files deleted from the fs and listed as deleted in git status. How can I stage this changes faster then running git rm for each file?
I am using hadoop for processing the files, presently i am trying to copy the files from local file system to HDFS using the command below hadoop fs -put d:\hadoop\weblogs /so/data/weblogs Got the er
Given a +350MB file online ETOPO1_Ice_g_geotiff.zip Within a script, the following curl command is currently used for downloading : curl -o ../data/ETOPO1/ETOPO1.zip \ 'http://www.ngdc.noaa.gov/mgg/gl
I'm using processing.js 1.4.1 and have code like this: new Processing($('canvas'), $('texarea').val()); How can I overwrite print function (without modifing the code of the library) so it display
I am using Mezzanine + cartridge and want to customize it. I can overwrite the templates by placing them in our project template folder. But I have no idea how to overwrite views and models.Because I
Is there an easy way to use Hadoop other than with the command line? Which tools are you using and which one is the best?
-put and -copyFromLocal are documented as identical, while most examples use the verbose variant -copyFromLocal. Why? Same thing for -get and -copyToLocal
Typically in a the input file is capable of being partially read and processed by Mapper function (as in text files). Is there anything that can be done to handle binaries (say images, serialized obje
I know that , we can copy files from host to another from mac using finder/smb protocol. But I would like to copy files from mac to windows machine using command line. so that, I can call the same pro
The file new.txt is available for sure; I dunno why when I'm trying to move into directory of hdfs, it's saying file doesn't exist. deepak@deepak:/$ cd $HOME/fs deepak@deepak:~/fs$ ls new.txt deepak@d
When I create branch in git, all the created files are added to the new branch. How can I create a branch without adding all the existing files?
How to pass arguments and process for .command files in mac? I am using below in windows for batch files cmd /c start F:\\startDriver.bat username In bat file @fake-command /u %1 %1 will hold userna
I don't understand why when I add files to my project using add existing files from project try it does not copy the file to my project, it just copies the reference to the file.
I want to verify the answer for following sample questions Question 1 You use the hadoop fs -put command to add sales.txt to HDFS. This file is small enough that it fits into a single block, which is
Using pig or hadoop streaming, has anyone loaded and uncompressed a zipped file? The original csv file was compressed using pkzip.
I have a file in hadoop: /home/hduser/IH/input/imageslocalpaths.txt (I've checked it is there using hadoop fs -ls IH/input/imageslocalpaths.txt). When I run: hadoop jar IH.jar IH/input/imageslocalpath
I want to learn Hadoop. However, I don't have access to a cluster now. Is it possible for me to learn it and use it for writing programs and learn it properly? Would it be helpful to run multiple Linu
I use the java Api as client to upload files ,but it always set the dfs.replication to 3,as a result when I use command (hadoop dfsadmin -report) to check the situation,all blocks are under replicatio