Trending questions in Big Data Hadoop

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How I can kill the jobs using jobID running in local mode with Hadoop

I am Running hadoop jobs in local ...READ MORE

Aug 26, 2020 in Big Data Hadoop by kamboj
 • 140 points • 4,378 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 • 2,151 views
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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 • 2,260 views
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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 • 2,096 views
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How to start Hadoop daemons?

Hi@MD, Before starting with the HDFS command, you have ...READ MORE

Oct 15, 2020 in Big Data Hadoop by akhtar
 • 38,260 points
edited Oct 16, 2020 by akhtar • 2,060 views
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Drop a table in Hive.

Hi@akhtar, When you drop a table from Hive ...READ MORE

Oct 19, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,877 views
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How to write Reducer code for Hadoop?

Hi@akhtar, You can create a reducer code for ...READ MORE

Oct 16, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,882 views
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How to find the status of MapReduce Job?

Hi@akhtar, You can run the Hadoop Job command ...READ MORE

Oct 16, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,876 views
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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 • 3,117 views
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Enable HA for ranger KMS.

Hi, If you have installed Ranger through Ambari ...READ MORE

Oct 15, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,881 views
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1 answer

HA ranger KMS ,

Hi@Shilpa, If you have installed Ranger through Ambari ...READ MORE

Oct 15, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,871 views
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1 answer

How to write mapper code for Hadoop in Python?

Hi@akhtar, Any job in Hadoop must have two ...READ MORE

Oct 16, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,802 views
+1 vote
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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 • 2,186 views
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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 • 2,374 views
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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 • 2,186 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 • 2,325 views
0 votes
0 answers

Enable HA for mapreduce jobhistory server

Hi Team, From past few days I am ...READ MORE

Sep 23, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 2,689 views
0 votes
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 • 1,713 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 • 2,059 views
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1 answer

Create hive table with location.

Hi@MD, We can also create a hive table ...READ MORE

Oct 16, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 1,542 views
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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 • 2,564 views
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1 answer

org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /try.txt._COPYING_ could only be replicated to 0 nodes instead of minReplication (=1).

Hi@akhtar, This error may occur if your datanode ...READ MORE

Apr 7, 2020 in Big Data Hadoop by MD
 • 95,460 points • 9,682 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 • 2,130 views
0 votes
1 answer

Error: FUNCTION 'NUCLEUS_ASCII' already exists.

Hi@akhtar, This error occurs when hive-shell started before ...READ MORE

Feb 5, 2020 in Big Data Hadoop by MD
 • 95,460 points • 12,179 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 • 2,066 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 • 2,215 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 • 2,203 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 • 1,906 views
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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 • 1,702 views
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1 answer

Hello all! I try to install hadoop but I have a problem when trying to format data folder with command "hdfs namenode -format". Error: Could not find or load main class Username

Hi, @Kamaraj, It looks like a path issue, ...READ MORE

Aug 13, 2020 in Big Data Hadoop by Gitika
 • 65,730 points • 3,640 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 • 1,732 views
0 votes
1 answer

Hive: ParseException line 5:20 missing EOF at '.' near

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

Jul 11, 2019 in Big Data Hadoop by Kim
 • 20,772 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 • 1,944 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 • 1,685 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