Most voted questions in Big Data Hadoop

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How to Import the complete directory into HDFS?

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

Jul 15 in Big Data Hadoop by Hiran
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1 answer

Which one is better MR or Spark?

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

Jul 15 in Big Data Hadoop by Daniel
45 views
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1 answer

Sqoop: Dsqoop.export.records.per.statement option

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

Jul 15 in Big Data Hadoop by Krish
90 views
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1 answer

Load data into teradata using sqoop

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

Jul 15 in Big Data Hadoop by Ritu
94 views
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2 answers

Exception in thread "main" java.lang.UnsupportedClassVersionError

Hi, keep in mind do not forget to ...READ MORE

Aug 5 in Big Data Hadoop by Rashi
72 views
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1 answer

Import JSON file into hive

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

Jul 15 in Big Data Hadoop by Guru
572 views
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1 answer

Hive Query to sort data

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

Jul 14 in Big Data Hadoop by Tina
31 views
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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

Jul 14 in Big Data Hadoop by Karan
26 views
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2 answers

How to set up Map and Reduce Tasks?

Hi, The number of map tasks for a ...READ MORE

Aug 5 in Big Data Hadoop by Rashi
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1 answer

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
• 4,560 points
88 views
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1 answer

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
• 4,560 points
112 views
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1 answer

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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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
849 views
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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
77 views
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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
68 views
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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
48 views
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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
180 views
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1 answer

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
31 views
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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
27 views
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1 answer

When and when not to use PigStore?

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

Jul 10 in Big Data Hadoop by Rushil
23 views
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1 answer

Use of Group ALL in Pig

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

Jul 10 in Big Data Hadoop by Roshan
42 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
96 views
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1 answer
0 votes
1 answer

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
30 views
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1 answer

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
117 views
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1 answer

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
32 views
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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
258 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
33 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
35 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
40 views
0 votes
1 answer

Merging Files using PIG

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

Jul 9 in Big Data Hadoop by Tina
31 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
68 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
45 views
0 votes
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
57 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
56 views
0 votes
1 answer

Sending hdfs file to a non hadoop cluster

There are different ways to do this. ...READ MORE

Jul 9 in Big Data Hadoop by Tarun
30 views
0 votes
1 answer

Exporting of ORC file to RDBMS using SQOOP

We have to use Sqoop-HCatalog Integration here. ...READ MORE

Jul 9 in Big Data Hadoop by Rishi
82 views
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1 answer

Amazon AWS Web Services

If you want to limit your hadoop ...READ MORE

Jul 8 in Big Data Hadoop by ravikiran
• 4,560 points
32 views
0 votes
1 answer

Install Hadoop On Ubuntu

I guess it should be at /hadoop/hadoop-common-project/hadoop-common/sr ...READ MORE

Jul 8 in Big Data Hadoop by ravikiran
• 4,560 points
30 views
0 votes
1 answer

Creating testjob in sqoop for incremental load

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

Jul 5 in Big Data Hadoop by Umar
38 views
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1 answer

How to set rep to particular user in hdfs?

HDFS does not allocate capacity separately based ...READ MORE

Jul 5 in Big Data Hadoop by Leena
32 views
0 votes
1 answer

How to resolve corrupted blocks in Hadoop?

You can use hdfs fsck / to ...READ MORE

Jul 5 in Big Data Hadoop by Nandini
171 views
0 votes
1 answer

Unable to instantiate hive metastore

To resolve this issue, follow the steps ...READ MORE

Jul 5 in Big Data Hadoop by Ritu
54 views
0 votes
1 answer

Hive complex data types

There are three complex types in hive, arrays: ...READ MORE

Jul 5 in Big Data Hadoop by Gani
561 views
0 votes
1 answer

How does decreasing the block size make more space on Datanode?

When there is space in data nodes ...READ MORE

Jul 5 in Big Data Hadoop by Krish
33 views
0 votes
1 answer

Getting error while using sqoop import.

You are trying to execute the sqoop ...READ MORE

Jul 5 in Big Data Hadoop by Reshma
65 views
0 votes
1 answer

How to install RHadoop packages (RMR, RHDFS, RHBase)?

With dev tools you can install directly ...READ MORE

Jul 5 in Big Data Hadoop by ravikiran
• 4,560 points
192 views
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1 answer

How to install Hadoop on Ubuntu?

You can manually create a file hadoop-env.sh ...READ MORE

Jul 5 in Big Data Hadoop by ravikiran
• 4,560 points
44 views
0 votes
1 answer

Merging Files using PIG

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

Jul 4 in Big Data Hadoop by Tina
167 views
0 votes
1 answer

Explain to me how to transfer data between Azure tables and Hadoop on Azure

I shall redirect you to a link ...READ MORE

Jul 4 in Big Data Hadoop by ravikiran
• 4,560 points
46 views