Trending questions in Big Data Hadoop

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Mutliple Output Format in Hadoop

Each reducer uses an OutputFormat to write ...READ MORE

3 minutes ago in Big Data Hadoop by ravikiran
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How to fix corrupt files on HDFS

1 - Spark if following slave/master architecture. So ...READ MORE

23 hours ago in Big Data Hadoop by ravikiran
• 3,560 points
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Spark Vs Hive LLAP Question

While Apache Hive and Spark SQL perform ...READ MORE

3 days ago in Big Data Hadoop by Karan
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Copy file from local to hdfs from the spark job in yarn mode

Please refer to the below code: import org.apache.hadoop.conf.Configuration import ...READ MORE

3 days ago in Big Data Hadoop by Raj
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How does data gets split in Sqoop?

I will drop the answer in the ...READ MORE

3 days ago in Big Data Hadoop by ravikiran
• 3,560 points
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Output Splitting problem in Hadoop

When you are loading two different files, ...READ MORE

3 days ago in Big Data Hadoop by Sayni
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How to execute combiner and partitioning program without adding package name?

Yes, it is possible to do so ...READ MORE

3 days ago in Big Data Hadoop by Raman
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Sqoop export not working

The issue that you might be getting ...READ MORE

3 days ago in Big Data Hadoop by Tina
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how to store images and videos on to HDFS?

HDFS is capable to accept data in ...READ MORE

3 days ago in Big Data Hadoop by ravikiran
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Pig: Difference between inner bag and outer bag

Outer Bag: An outer bag is nothing but ...READ MORE

3 days ago in Big Data Hadoop by Firoz
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RDMBS integration with Hadoop

About integrating RDBMS with Hadoop, you can ...READ MORE

3 days ago in Big Data Hadoop by Nanda
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CSV integration with Hadoop

For integrating Hadoop with CSV, we can use ...READ MORE

3 days ago in Big Data Hadoop by Krish
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Which one is better MR or Spark?

The above difference clearly points out that ...READ MORE

4 days ago in Big Data Hadoop by Daniel
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Import JSON file into hive

There are two ways to load json ...READ MORE

4 days ago in Big Data Hadoop by Guru
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Error in running hdfs commands

The command you entered is incorrect. Run ...READ MORE

4 days ago in Big Data Hadoop by Guru
10 views
0 votes
1 answer

Pig script not dumping the data correctly

The first column is denoted by $0, ...READ MORE

4 days ago in Big Data Hadoop by George
9 views
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Exception in thread "main" java.lang.UnsupportedClassVersionError

Try removing the / before the input ...READ MORE

4 days ago in Big Data Hadoop by Kriti
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Sqoop: Dsqoop.export.records.per.statement option

Dsqoop.export.records.per.statement=1 is as the name suggests how many ...READ MORE

4 days ago in Big Data Hadoop by Krish
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Load data into teradata using sqoop

The general syntax to do this as ...READ MORE

4 days ago in Big Data Hadoop by Ritu
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0 votes
1 answer

How to Import the complete directory into HDFS?

First, need to create a directory in Hadoop: $ ...READ MORE

4 days ago in Big Data Hadoop by Hiran
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0 votes
1 answer

Creating a hive script and execute in the edureka cloudlab.

Please remove -f option from hive arguments and use hql extension ...READ MORE

5 days ago in Big Data Hadoop by Karan
10 views
0 votes
1 answer

Hive Query to sort data

If you are trying to sort first ...READ MORE

5 days ago in Big Data Hadoop by Tina
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How to set up Map and Reduce Tasks?

when using the basic FileInputFormat classes is just the ...READ MORE

Jul 12 in Big Data Hadoop by ravikiran
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27 views
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How to remove duplicate records from Hive table?

A record is duplicate if there are ...READ MORE

Jul 11 in Big Data Hadoop by Bhuvan
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Primary keys in apache Spark

from pyspark.sql.functions import monotonically_increasing_id df.withColumn("id", monotonically_increasing_id()).show() Verify the second ...READ MORE

Jul 11 in Big Data Hadoop by ravikiran
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Hive: ParseException line 5:20 missing EOF at '.' near

In the stored as parameter, you have specified the ...READ MORE

Jul 11 in Big Data Hadoop by Kim
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Unable to Locate WinUtils Library in Hadoop binary path.

If you are facing this problem while running a ...READ MORE

Jul 11 in Big Data Hadoop by ravikiran
• 3,560 points
14 views
0 votes
1 answer

Not able to upload files to hdfs: No such file or directory

The reason for this error is that ...READ MORE

Jul 11 in Big Data Hadoop by Srujan
14 views
0 votes
1 answer

Command to copy file from desktop to hdfs

You can use either of the below ...READ MORE

Jul 11 in Big Data Hadoop by Firoz
13 views
0 votes
1 answer

How to retrieve/get complete HQL hive query from hive,spark and tez?

To get full query running for the ...READ MORE

Jul 11 in Big Data Hadoop by Yogi
14 views
0 votes
1 answer

HDFS: Upload file from local file system to Edureka cloud lab

Step 1: Go to My Lab and ...READ MORE

Jul 11 in Big Data Hadoop by Zora
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1 answer

Is data sent to some other location to be processed in pig?

With pig, we are not taking data ...READ MORE

Jul 10 in Big Data Hadoop by Adi
17 views
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Pig: Does these jar files run in NodeManager to produce result?

Below is what happens with the map-reduce ...READ MORE

Jul 10 in Big Data Hadoop by Lucy
14 views
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1 answer

How to import data to hbase database?

There are 3 Ways to Load Data ...READ MORE

Jul 10 in Big Data Hadoop by Karan Reddy
14 views
0 votes
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Use of Group ALL in Pig

Suppose we have a data set as ...READ MORE

Jul 10 in Big Data Hadoop by Roshan
12 views
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1 answer
0 votes
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When and when not to use PigStore?

The Pig storage is not used only ...READ MORE

Jul 10 in Big Data Hadoop by Rushil
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How can we ignore header line while loading data into Pig?

Suppose you need to load this in ...READ MORE

Jul 10 in Big Data Hadoop by Kiran
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Syntax to mention that the data is enclosed in double quotes in pig

So, we will execute the below command, new_A_2 ...READ MORE

Jul 10 in Big Data Hadoop by Esha
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+1 vote
0 answers

Hadoop Installation error [closed]

Pls help on below error..on MAC OS WARN ...READ MORE

Jul 9 in Big Data Hadoop by Anshuman
• 130 points

closed Jul 10 by Omkar 12 views
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Can we use different i/p and o/p format classes in mapreduce code?

Yes, InputFormatClass and OutputFormatClass are independent of ...READ MORE

Jul 9 in Big Data Hadoop by Jimmy
17 views
0 votes
1 answer

How to solve error caused due to output types of mapper and reducer not matching?

job.setOutputValueClass will set the types expected as ...READ MORE

Jul 9 in Big Data Hadoop by Rishab
17 views
0 votes
1 answer

Integration of hbase

For HBase Pig integration, you can refer to ...READ MORE

Jul 9 in Big Data Hadoop by Kiran
17 views
0 votes
1 answer

Why do we use job.waitForCompletion(true)?

The main reason for job.waitForCompletion exists is ...READ MORE

Jul 9 in Big Data Hadoop by Josh
16 views
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1 answer

What is the use of setting the name of the job in mapreduce?

Job job = new Job(conf,"job_name") is just used ...READ MORE

Jul 9 in Big Data Hadoop by Umesh
14 views
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1 answer

Regarding unstructured data handling in hadoop

There are multiple ways to import unstructured ...READ MORE

Jul 9 in Big Data Hadoop by Jishan
18 views
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Merging Files using PIG

In order to merge two or more ...READ MORE

Jul 9 in Big Data Hadoop by Tina
12 views
0 votes
1 answer

Query regarding temporary File type conversion of parquet to text

Suppose I have the below parquet file ...READ MORE

Jul 9 in Big Data Hadoop by Janan
11 views
0 votes
1 answer

Pdf to csv file format conversions

You can convert the pdf files with ...READ MORE

Jul 9 in Big Data Hadoop by Esha
13 views
0 votes
1 answer

Sqoop import error with sqoop job

Please try the below command: sqoop job -create ...READ MORE

Jul 9 in Big Data Hadoop by Rina
14 views