Most answered questions in Big Data Hadoop

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How to invoke the Grunt shell in MapReduce mode in Pig?

Hi@akhtar, You can invoke the Grunt shell in ...READ MORE

Oct 15, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,225 views
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1 answer

How to load dataset in Pig?

Hi@akhtar, You can run the load command in ...READ MORE

Oct 14, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,487 views
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1 answer

Execute the Pig script in Local mode.

Hi@akhtar, You can write an entire Pig Latin ...READ MORE

Oct 14, 2020 in Big Data Hadoop by MD
 • 95,460 points • 963 views
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1 answer

How to start Grunt shell in Local mode in Pig?

Hi@akhtar, You can invoke the Grunt shell in ...READ MORE

Oct 14, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,505 views
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1 answer

mkdir: cannot create directory `/var/run/hadoop': Permission denied.

Hi@akhtar, You need to set the path of ...READ MORE

Oct 14, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,956 views
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1 answer

How to create an empty file in Hadoop?

Hi@akhtar, You can create an empty file in ...READ MORE

Oct 13, 2020 in Big Data Hadoop by MD
 • 95,460 points • 14,665 views
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1 answer

How to remove the directory from HDFS?

Hi@akhtar, You can remove the directory using the ...READ MORE

Oct 13, 2020 in Big Data Hadoop by MD
 • 95,460 points • 5,201 views
0 votes
1 answer

org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://localhost:54310/user/hduser/input.

Hi@akhtar, It seems you are providing the wrong ...READ MORE

Oct 13, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,093 views
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1 answer

How to find the number of blocks for a file in Hadoop?

Hi@akhtar, You can use Hadoop file system command to ...READ MORE

Oct 13, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,775 views
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1 answer

How to check the name of the hadoop server?

Hi@akhtar, If you're running a pseudo-distributed setup, you ...READ MORE

Oct 13, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,108 views
0 votes
1 answer

I was installing Hadoop for windows everything went smoothly but when I tried to format NameNode it displayed an error of failing to start NameNode. What should I do?

Hi@alex, You may set the wrong IP in ...READ MORE

Oct 12, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,290 views
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1 answer

HI i was trying to install hadoop but i get these error....Format HDFS Namenode Error: Could not find or load main class ”-Djava.library.path=.home.hadoop.hadoop-3.2.1.lib"

Hi@bezz, Hadoop builds on top of Java. So ...READ MORE

Oct 7, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,214 views
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1 answer

Ranger kms create key failed

Hi@shllpa, I have checked your file. All seems ...READ MORE

Oct 6, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,319 views
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1 answer

How to view contents of file in hadoop hdfs?

Hi@akhtar, You can use the Hadoop filesystem command ...READ MORE

Oct 5, 2020 in Big Data Hadoop by MD
 • 95,460 points • 8,912 views
0 votes
1 answer

How to find HDFS free space from command line?

Hi@akhtar, You can find the free space from ...READ MORE

Oct 5, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,292 views
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1 answer

Where does Hive store files in HDFS?

Hi@akhtar, It depends on what you set in ...READ MORE

Oct 5, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,457 views
+1 vote
1 answer

How to check a HDFS directory size?

Hi@akhtar, You can check the size of the ...READ MORE

Oct 5, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,356 views
0 votes
1 answer

How to change the default replication factor in Hadoop?

Hi@akhtar, You can change the default replication factor from the ...READ MORE

Oct 3, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,260 views
0 votes
1 answer

How to change default block size in Hadoop Cluster?

Hi@akhtar, You can change the default block size ...READ MORE

Oct 3, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,011 views
0 votes
1 answer

Change the owner and group of a file in Hadoop.

Hi@akhtar, You can use the Chown command. This ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 9,035 views
0 votes
1 answer

Change permissions of a file in HDFS.

Hi@akhtar, You can use the Chmod command to ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,757 views
0 votes
1 answer

How to create a group in Hadoop?

Hi@akhtar, Generally, to create a group in the ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,505 views
0 votes
1 answer

How to append files from local system to HDFS?

Hi@akhtar, You can use appendToFile in your Hadoop ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 9,061 views
0 votes
1 answer

How to set replication factor in Hadoop?

Hi@akhtar, You can find setrep command in the ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 8,510 views
0 votes
1 answer

How to merge files in Hadoop?

Hi@akhtar, You can use getmerge command in Hadoop. ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,497 views
0 votes
1 answer

How to remove files from HDFS system?

Hi@akhtar, You will find rm command in your ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 27,772 views
0 votes
1 answer

Copy files in different folders in Hadoop.

Hi@akhtar, You can use the cp command in ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 34,558 views
0 votes
1 answer

How to copy files from HDFS to local system?

Hi@akhtar, You can use the put command in ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 4,799 views
0 votes
1 answer

Setting up Hadoop Multi-node cluster on windows 10 systems

Hi@Hassan, You can do it windows system as ...READ MORE

Oct 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,218 views
0 votes
1 answer

Adding Ranger KMS server using ambari

Hi@Shllpa, It is asking for admin credentials. Did ...READ MORE

Sep 28, 2020 in Big Data Hadoop by MD
 • 95,460 points • 984 views
0 votes
1 answer

touchz: io.bytes.per.checksum(512) and blockSize(256) do not match. blockSize should be a multiple of io.bytes.per.checksum

Hi@akhtar, The default the block size is 64MB ...READ MORE

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,344 views
0 votes
1 answer

touchz: java.io.IOException: java.lang.IllegalArgumentException: Unexpected value for the block size

Hi@akhtar, You are trying to create a block ...READ MORE

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,194 views
0 votes
1 answer

How to change block size in Hadoop dynamically?

Hi@akhtar, By default, the block size is 64MB ...READ MORE

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 3,504 views
0 votes
1 answer

How to configure Hadoop Client?

Hi@akhtar, To configure the Hadoop Client, you need ...READ MORE

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,073 views
0 votes
1 answer

How to upload files in Hadoop Cluster?

Hi@akhtar, To upload a file in Hadoop Cluster, ...READ MORE

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,506 views
0 votes
1 answer

Usage: java FsShell [-put <localsrc> ... <dst>]

Hi@akhtar, You are trying to upload your file ...READ MORE

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,125 views
0 votes
1 answer

How to connect Hadoop WebUI?

Hi@akhtar, You can connect your Hadoop Cluster with ...READ MORE

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,204 views
0 votes
1 answer

How to see the report of Hadoop Cluster from command line?

Hi@akhtar, You can see the report of Hadoop Cluster ...READ MORE

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,799 views
0 votes
1 answer

How to format a Hadoop Master Node?

Hi@akhtar, To start the Hadoop NameNode, you need ...READ MORE

Sep 21, 2020 in Big Data Hadoop by MD
 • 95,460 points • 977 views
0 votes
1 answer

How to start Hadoop namenode service?

Hi@akhtar, If you configured your Hadoop master successfully, ...READ MORE

Sep 21, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,437 views
0 votes
1 answer

How to configure Hadoop namenode?

Hi@MD, To configure the Hadoop master node, you ...READ MORE

Sep 21, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 1,335 views
0 votes
1 answer

file /usr/bin from install of hadoop-1.2.1-1.x86_64 conflicts with file from package filesystem-3.8-2.el8.x86_64

Hi@akhtar, Your Hadoop rpm is conflicting with some ...READ MORE

Sep 21, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,745 views
0 votes
1 answer

Urgently Want dataset

Hi, @Amit, Regarding your query on Datasets on (merchant ...READ MORE

Sep 21, 2020 in Big Data Hadoop by Gitika
 • 65,730 points • 1,078 views
0 votes
1 answer

How to merge two Spark DataFrames?

Hi@akhtar, You can perform join operation in spark. ...READ MORE

Sep 17, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,251 views
0 votes
1 answer

How to get resource utilized(memory and CPU) by each hive query which is running under single application Id?

Hi@sivachandran, You can monitor the metrics of your ...READ MORE

Sep 18, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,121 views
0 votes
1 answer

Can't Pass Java Agent in Hive

Hi@Som, You may forget to set the below ...READ MORE

Sep 15, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,147 views
0 votes
1 answer

I went to datadir/hdfs/nn/current but no folder called current

Hi@Wlssam, I am not able to understand your ...READ MORE

Sep 14, 2020 in Big Data Hadoop by MD
 • 95,460 points • 819 views
0 votes
1 answer

Monitoring Hadoop with Prometheus JMX

Hi@Som, This error is not related to Prometheus ...READ MORE

Sep 14, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,303 views
0 votes
1 answer

which version of sqoop should i use for hadoop 3.3.0?

Hi@shresht, This is just a warning. Did you ...READ MORE

Sep 7, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,047 views
0 votes
1 answer

Multiple rows to columns in hive

Hi, You need to create your own customize ...READ MORE

Sep 4, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,446 views
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