Unanswered questions in Big Data Hadoop

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hadoop cluster Unable to start standby Namenode

we have HDP Hadoop cluster with two ...READ MORE

Feb 4, 2024 in Big Data Hadoop by koko
edited Mar 5 • 126 views
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hadoop cluster + Unable to start standby Namenode

we have HDP Hadoop cluster with two ...READ MORE

Feb 4, 2024 in Big Data Hadoop by anonymous
edited Mar 5 • 110 views
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I am getting this below error in cloudera environment when executing the batch processing code

java.lang.IllegalStateException: Received event is not valid: Closed at ...READ MORE

Jun 27, 2023 in Big Data Hadoop by syedsalahuddin
edited Mar 5 • 174 views
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0 answers

Dj djdd dbd dbd jd dj dj dj dj

Jus eeiger eeiger ec hg hg hg ...READ MORE

May 26, 2023 in Big Data Hadoop by anonymous
edited Mar 5 • 136 views
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namenode not running

when i execute command start-all.sh it does ...READ MORE

Jan 25, 2023 in Big Data Hadoop by Pramod
edited Mar 4 • 111 views
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sqoop export --connect jdbc:oracle:thin:@//dbtx07-scan7:9444/mydb --username nathan --P --table my_table --export-dir "/data/scoop_data/" -m -8 . I get the error attached.

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Jan 17, 2023 in Big Data Hadoop by Nathan
 • 110 points
edited Mar 4 • 127 views
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when i try to install hadoop 3.3.1 on ubuntu VM base on https://youtu.be/03uyN3WquIc

when i type cd /usr/local/hadoop/ in command i ...READ MORE

Nov 24, 2022 in Big Data Hadoop by Farah
edited Mar 4 • 33 views
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Which is better linen or polyester?

Polyester, a synthetic, is a warmer fabric, ...READ MORE

Nov 16, 2022 in Big Data Hadoop by qiansifang
edited Mar 4 • 33 views
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Sqoop error while trying to connect to MySql

Hello, I am running the below sqoop command ...READ MORE

Oct 2, 2022 in Big Data Hadoop by stepnabz
edited Mar 4 • 31 views
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Cleaning Requirements for Hospital Curtain Fabric

Generally, hospital curtains are different from household ...READ MORE

Sep 26, 2022 in Big Data Hadoop by qiansifang
edited Mar 4 • 32 views
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while deploying single node hadoop cluster, on final step of formatting namenode its showing command not found?

i have entered command hdfs dfs namenode ...READ MORE

Sep 5, 2022 in Big Data Hadoop by user
edited Mar 4 • 26 views
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The characteristics of flame retardant curtain fabric

Flame retardant curtain fabric is a product ...READ MORE

Jul 29, 2022 in Big Data Hadoop by qiansifang
edited Mar 4 • 23 views
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the location of chunks aren't stored in non-volatile memory of GFS, how much time would it take for master to receive heartbeat messages and build the chunk locations table?

Since in GFS, we assume hardware fails ...READ MORE

Jul 23, 2022 in Big Data Hadoop by narayanan
edited Mar 4 • 25 views
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how to remove this erroe

on every execution of commands  this error ...READ MORE

May 23, 2022 in Big Data Hadoop by anonymous
edited Mar 4 • 103 views
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hiv table data load using .csv

this is my data in csv file ...READ MORE

May 21, 2022 in Big Data Hadoop by Srinivas
 • 120 points
edited Mar 4 • 110 views
0 votes
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EXCEL: How to automatically add serial number in Excel Table using formula that is immune to filtering / sorting?

I want to create an Excel Table ...READ MORE

Mar 24, 2022 in Big Data Hadoop by Edureka
 • 13,690 points • 3,843 views
0 votes
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keyword and sentiment analysis. map reduce mapper combiner and reducer program

task is to  analyse a range of ...READ MORE

Mar 23, 2022 in Big Data Hadoop by anonymous
edited Mar 4 • 26 views
0 votes
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Big Data Hadoop Course worth it or not?

Big Data Hadoop course is used for ...READ MORE

Feb 23, 2022 in Big Data Hadoop by qtsinfo
edited Mar 4 • 28 views
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what are the five v's of big data

Feb 4, 2022 in Big Data Hadoop by surbhi
 • 3,820 points • 761 views
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what is big data with examples

what is big data with examples READ MORE

Feb 1, 2022 in Big Data Hadoop by surbhi
 • 3,820 points • 618 views
0 votes
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I want to move from Network support engineer to Talend etl tool.

I have experience of 2years of networking ...READ MORE

Jan 11, 2022 in Big Data Hadoop by anonymous
edited Mar 4 • 26 views
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what are the problems associated with big data

what are the problems associated with big ...READ MORE

Jan 7, 2022 in Big Data Hadoop by surbhi
 • 3,820 points • 742 views
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what are the characteristics of big data?

Jan 5, 2022 in Big Data Hadoop by Edureka
 • 13,620 points • 493 views
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what is big data technology?

Dec 17, 2021 in Big Data Hadoop by Edureka
 • 13,620 points • 682 views
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What is Big Data Analytics?

Dec 10, 2021 in Big Data Hadoop by surbhi
 • 3,820 points • 742 views
0 votes
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Which of the following platforms does hadoop run on?

Which of the following platforms does hadoop ...READ MORE

Dec 10, 2021 in Big Data Hadoop by Kavya
 • 700 points • 1,091 views
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What is Hadoop Cluster?

Cluster is a collection of something, a ...READ MORE

Dec 9, 2021 in Big Data Hadoop by Kavya
 • 700 points • 877 views
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What is Hadoop Cluster?

What is Hadoop Cluster? READ MORE

Dec 2, 2021 in Big Data Hadoop by Kavya
 • 700 points • 646 views
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What is Hadoop?

What is Hadoop? READ MORE

Dec 2, 2021 in Big Data Hadoop by Kavya
 • 700 points • 637 views
0 votes
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What was Hadoop named after?

Nov 25, 2021 in Big Data Hadoop by Edureka
 • 12,690 points • 741 views
0 votes
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WARNING: Use of this script to execute namenode is deprecated. WARNING:

am getting the following errot when i ...READ MORE

Nov 10, 2021 in Big Data Hadoop by anonymous
 • 140 points • 1,202 views
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hadoop namenode ~format

When i type  hadoop namenode ~format WARNING: Use ...READ MORE

Nov 10, 2021 in Big Data Hadoop by anonymous
 • 140 points • 1,151 views
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trying to execute python wordcount program but command stuck

HI  I am learning Hadoop, I have tried ...READ MORE

Oct 10, 2021 in Big Data Hadoop by Yogeshwar
 • 120 points • 460 views
0 votes
0 answers

Failed to retrieve connection info for urlid "inputfile".Cause :please set up authentication file '/home/hduser/sqltool.rc'

i am trying to run a jar ...READ MORE

Aug 19, 2021 in Big Data Hadoop by tasneem
edited Mar 4 • 28 views
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0 answers

hi, When I run hdfs namenode -format to format namenode, I am getting this error:

2021-08-13 17:50:25,851 ERROR namenode.NameNode: Failed to start ...READ MORE

Aug 14, 2021 in Big Data Hadoop by anonymous
edited Mar 4 • 25 views
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0 answers

All datanodes are running but cannot see as live node in Ui portal

Hi I am deploying hdfs in K8s ...READ MORE

Jul 20, 2021 in Big Data Hadoop by sayali
edited Mar 4 • 26 views
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Need help to solve unrecognized arg in sqoop

//command sqoop job \ --create myjob \ --import \ --connect jdbc:mysql://localhost/sqoop ...READ MORE

Jun 5, 2021 in Big Data Hadoop by Nirav
edited Mar 4 • 26 views
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The following pairs are supposed to have one component that stores data in a distributed fashion and another component that performs computations in a distributed manner.

Choose the incorrect pair HDFS, MapReduce HBase, MapReduce HBase, Spark HDFS, ...READ MORE

Apr 10, 2021 in Big Data Hadoop by anonymous
edited Mar 4 • 52 views
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How to Find Specific Column in Hadoop?

First let me say I am super ...READ MORE

Apr 8, 2021 in Big Data Hadoop by Brianne
edited Mar 4 • 27 views
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Hadoop : command not found

Hello people... I can access hadoop webui ...READ MORE

Mar 11, 2021 in Big Data Hadoop by talal
edited Mar 4 • 41 views
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0 answers

hdfs dfs -count -h hdfs://sandbox.hortonworks.com/demo/

I want to do the same with ...READ MORE

Mar 8, 2021 in Big Data Hadoop by 1 bihari
edited Mar 4 • 29 views
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0 answers

hdfs dfs -count -h /user/isdoc/tmcss/all_ttc_custome_list/*

I want to do the same with ...READ MORE

Mar 8, 2021 in Big Data Hadoop by 1 bihari
edited Mar 4 • 29 views
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0 answers

hdfs dfs -count -h /user/isdoc/tmcss/all_ttc_custome_list/*

I want to do the same with ...READ MORE

Mar 8, 2021 in Big Data Hadoop by 1 bihari
edited Mar 4 • 31 views
0 votes
0 answers

How to provide read-only access to hive views to end users?

I have created some hive tables in ...READ MORE

Feb 18, 2021 in Big Data Hadoop by Jnanaranjan
edited Mar 4 • 26 views
0 votes
0 answers

Hadoop MapReduce - Join of two files and Computation on grouped values

I am fairly new to Hadoop and ...READ MORE

Jan 20, 2021 in Big Data Hadoop by anonymous
edited Mar 4 • 30 views
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0 answers

Hadoop Datanode runs only once and then does not start again on Windows 10

I was trying to install Hadoop and ...READ MORE

Jan 7, 2021 in Big Data Hadoop by Mueez
edited Mar 4 • 31 views
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0 answers

What are the pros and cons of parquet format compared to other formats?

Hi Team, I am new to Hadoop I ...READ MORE

Dec 21, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,303 views
0 votes
0 answers

What is the difference between partitioning and bucketing a table in Hive ?

Hi Team, I am new to Hive. I ...READ MORE

Dec 20, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 1,711 views
+1 vote
0 answers

How to export all collections in MongoDB?

Hi Team, I have one database in MongoDB. ...READ MORE

Dec 17, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 736 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 • 1,489 views

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