Writing File into HDFS using spark scala

0 votes

Hi, I am trying to create a new file in HDFS and write some content into it. Here is my code snippet:

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import java.io.PrintWriter;

object App {

def main(args : Array[String]) {

val conf = new Configuration()
val fs= FileSystem.get(conf)
val output = fs.create(new Path("hdfs://quickstart.cloudera:8020/user/cloudera/sample.txt"))
val writer = new PrintWriter(output)
writer.write("Hellow World")
}
}

The file is getting created in the hdfs but the problem is I can't find the content that I was trying to write into the file sample.txt. Please tell me what is the problem.

Apr 6, 2018 in Big Data Hadoop by Shubham
• 13,490 points
17,366 views

1 answer to this question.

0 votes

The reason you are not able to find the content that you are trying to write into the file is because you are not closing the writer object. So, just add the following line in your code and you will be able to write the data as well:

writer.close()

Hope it helps!

If you want to know more about Apache Spark Scala, It's highly recommended to go for Apache Spark certification course today.

Thanks!!

answered Apr 6, 2018 by kurt_cobain
• 9,350 points

Related Questions In Big Data Hadoop

0 votes
1 answer

How to write a file in HDFS using Java Programming language?

Define the HADOOP_CONF_DIR environment variable to your Hadoop configuration ...READ MORE

answered Sep 28, 2018 in Big Data Hadoop by Frankie
• 9,830 points
2,874 views
0 votes
1 answer

Hadoop Hive Hbase: How to insert data into Hbase using Hive (JSON file)?

You can use the get_json_object function to parse the ...READ MORE

answered Nov 15, 2018 in Big Data Hadoop by Omkar
• 69,220 points
2,942 views
0 votes
1 answer

How to delete a file from Hadoop hdfs using java?

Try this: FileSystem fs = FileSystem.get(getConf()); fs.delete(new ...READ MORE

answered Nov 28, 2018 in Big Data Hadoop by Omkar
• 69,220 points
5,842 views
0 votes
1 answer

How to find the number of blocks a hdfs file is divided into?

Yes. you can use the hadoop fsck command to do ...READ MORE

answered Nov 30, 2018 in Big Data Hadoop by Omkar
• 69,220 points
5,941 views
–1 vote
1 answer

Hadoop dfs -ls command?

In your case there is no difference ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by kurt_cobain
• 9,350 points
4,631 views
+1 vote
1 answer
+1 vote
1 answer

Hadoop Mapreduce word count Program

Firstly you need to understand the concept ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 11,380 points
11,064 views
+2 votes
11 answers

hadoop fs -put command?

Hi, You can create one directory in HDFS ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by nitinrawat895
• 11,380 points
108,998 views
0 votes
1 answer

How does the HDFS Client knows the block size while writing?

HDFS is designed in a way where ...READ MORE

answered Mar 27, 2018 in Big Data Hadoop by kurt_cobain
• 9,350 points
1,111 views
0 votes
1 answer

How can I put file to HDFS directly without copying it local disk?

Can use pipe from wget to hdfs. You ...READ MORE

answered Apr 15, 2018 in Big Data Hadoop by kurt_cobain
• 9,350 points
4,625 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP