Trending questions in Big Data Hadoop

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can we add hadoop in docker or online server or cloud

Hi@Rajan, If you are asking, can we configure hadoop ...READ MORE

May 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,583 views
0 votes
2 answers

Load data into the hive table

Hi, We can use a normal insert query ...READ MORE

Oct 16, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,641 views
0 votes
1 answer

ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'oozie'

Hey, I got the same error and it ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 14,866 views
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1 answer

create table in Hbase using Java API

Hi@akhtar, You can use the below code to ...READ MORE

Mar 31, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,515 views
0 votes
1 answer

problem accessing /master-status. Reason: Master is initializing

Hi@akhtar, To avoid this error you have to ...READ MORE

Mar 30, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,477 views
+2 votes
1 answer

how to escape delimiter in hive?

Refer to the below code used to ...READ MORE

Oct 31, 2019 in Big Data Hadoop by Kiran
 • 8,926 views
+1 vote
1 answer

flume twitter data file not generated in HDFS

Seems like you've missed the source and ...READ MORE

Dec 2, 2019 in Big Data Hadoop by Esha
 • 8,952 views
0 votes
1 answer

ConfigurationException: replication_factor is an option for SimpleStrategy, not NetworkTopologyStrategy

Hi@akhtar, In cassandra there are two types of ...READ MORE

Apr 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,097 views
0 votes
1 answer

ERROR [main] client.ConnectionManager$HConnectionImplementation: The node /hbase is not in ZooKeeper.

Hi@akhtar, When you try to start hbase server, ...READ MORE

Mar 30, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,151 views
0 votes
1 answer

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

Jul 16, 2019 in Big Data Hadoop by Raj
 • 13,150 views
+1 vote
2 answers

Hadoop Learning Path

Hi! Since you have only 6 weeks, it's ...READ MORE

Nov 28, 2019 in Big Data Hadoop by Farheen
 • 2,474 views
0 votes
1 answer

while executing this iam getting this error can anyone please help me with the solution please

Hi@srija, It seems you have not provided complete ...READ MORE

Apr 6, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,584 views
0 votes
1 answer

How to create a parquet table in hive and store data in it from a hive table?

Please use the code attached below for ...READ MORE

Jan 28, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 20,267 views
0 votes
1 answer

configure Cassendra in Linux system?

Hi@akhtar, To install cassandra in your system, follow ...READ MORE

Apr 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,725 views
0 votes
1 answer

can we store hive output in hadoop hdfs

Hi, You can save your hive output to ...READ MORE

Feb 24, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,365 views
0 votes
1 answer

How to set pssword based authentication in cassandra?

Hi@akhtar, You can set password to your cassandra ...READ MORE

Apr 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,703 views
0 votes
1 answer

org.datanucleus.store.rdbms.exceptions.MissingTableException: Required table missing : "DBS" in Catalog "" Schema "".

Hi@akhtar, Here you have to add the below  ...READ MORE

Feb 5, 2020 in Big Data Hadoop by MD
 • 95,460 points • 4,107 views
0 votes
1 answer

What is ETL tool in Hadoop?

Hi@akhtar, ETL means extract, transform, load. It is ...READ MORE

Feb 2, 2020 in Big Data Hadoop by MD
 • 95,460 points • 4,198 views
0 votes
1 answer

HDFS on docker containers - is it possible?

Hi @judy, It is possible to Simplifying Hadoop deployments ...READ MORE

Feb 12, 2020 in Big Data Hadoop by Gitika
 • 65,730 points • 3,733 views
0 votes
1 answer

How to create table in cassandra?

Hi@akhtar, To create table in cassandra, you have ...READ MORE

Apr 1, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,527 views
0 votes
1 answer

How to select particular column In a table in hive?

Hive is a high-level language to analyze ...READ MORE

Jul 31, 2019 in Big Data Hadoop by Killian
 • 12,078 views
0 votes
0 answers

HIve sql multiple conditions in where cluase

Hi, My table has created_date, changed_date in datetime ...READ MORE

Feb 12, 2020 in Big Data Hadoop by syam
 • 120 points
edited Feb 12, 2020 by Gitika • 3,586 views
0 votes
1 answer

Implementation in Hadoop

Hi@pinal, You have already installed hadoop. Now you ...READ MORE

Apr 3, 2020 in Big Data Hadoop by MD
 • 95,460 points • 1,318 views
0 votes
1 answer

What is the main purpose of HDFS fsck command?

HDFS fsck is used to check the ...READ MORE

Apr 10, 2019 in Big Data Hadoop by Gitika
 • 65,730 points
edited Apr 12, 2019 by Gitika • 16,646 views
0 votes
1 answer

Bucketing vs Partitioning in HIve

Partition divides large amount of data into ...READ MORE

Jul 9, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 28,386 views
+1 vote
1 answer

Streaming facebook data using Flume framework!!!

Hi You can find the facebook 'API' from ...READ MORE

Jan 21, 2020 in Big Data Hadoop by anonymous
 • 4,095 views
+1 vote
2 answers

Hadoop Hive: Not recognizing alias named in select part?

You can not use column aliases in ...READ MORE

Nov 26, 2019 in Big Data Hadoop by anonymous
 • 14,572 views
0 votes
1 answer

How to groupBy/count then filter on count in Scala

I think the exception is caused because ...READ MORE

Apr 19, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 31,800 views
0 votes
1 answer

Error: org.apache.thrift.transport.TTransportException (state=08S01,code=0)

This error usually occurs when the HiveServer2 ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Ram
 • 13,948 views
+1 vote
0 answers

Job failed as tasks failed. failedMaps

Hello All, I am new to hadoop, i ...READ MORE

Aug 1, 2019 in Big Data Hadoop by Hemanth
 • 250 points
edited Aug 1, 2019 by Omkar • 11,203 views
0 votes
1 answer

SOURCE $HIVE_HOME/scripts/metastore/upgrade/mysql/hive-schema-0.14.0.mysql.sql; ERROR:

Hi@akhtar, I think mysql is not able to ...READ MORE

Feb 13, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,728 views
0 votes
1 answer

How to install Hive on Windows Operating System?

First, download Hive from the following link: http://www.apache.org/dyn/closer.cgi/hive/ Next, ...READ MORE

Feb 27, 2019 in Big Data Hadoop by Kirti
 • 17,882 views
0 votes
1 answer

How to convert a string to timestamp with milliseconds in Hive?

 concatenation of substrings using the following code: select ...READ MORE

Oct 31, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 22,898 views
0 votes
1 answer

Exception in thread "main" java.lang.RuntimeException: Hive metastore database is not initialized.

Hi@akhtar, In this scenario, first you check if ...READ MORE

Feb 5, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,934 views
+1 vote
1 answer

Information Unavailable:Running jps command in Hadoop

Hi, I think this is because the process ...READ MORE

Jan 21, 2020 in Big Data Hadoop by anonymous
 • 3,520 views
0 votes
2 answers

Not Able to read the file from hdfs location

Please make sure you connect to spark2-shell ...READ MORE

Jul 14, 2020 in Big Data Hadoop by Shantanu
 • 190 points • 3,613 views
0 votes
1 answer

How can I append data to an existing file in HDFS?

You have to do some configurations as ...READ MORE

Jul 25, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 11,199 views
+1 vote
1 answer

How to append data to a parquet file?

Try using Spark API to append the ...READ MORE

Jan 11, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 19,570 views
0 votes
1 answer

ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

Hi@akhtar, Before setting password in mysql, check the ...READ MORE

Feb 13, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,348 views
+1 vote
2 answers

How to find previous records from a data set in Pig??

Hi, You can use ToDate() and SubtractDuration() function ...READ MORE

Jan 23, 2020 in Big Data Hadoop by MD
 • 95,460 points • 3,174 views
0 votes
0 answers

Sentry: Grant role is getting error, while executing

Hi, Sentry: I am trying to grant a ...READ MORE

Feb 14, 2020 in Big Data Hadoop by Mahboob
 • 140 points • 2,043 views
0 votes
1 answer

How to remove duplicate records from Hive table?

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

Jul 11, 2019 in Big Data Hadoop by Bhuvan
 • 11,343 views
+1 vote
1 answer

Does sqoop 1.4.6 version on HDP 2.6.4 support SSL

Hi, Is your "JDBC location" string connect?  If ...READ MORE

Jan 29, 2020 in Big Data Hadoop by Roshan
 • 2,500 views
0 votes
1 answer

Namespace in HDFS?

Basically when we say Namespace we mean ...READ MORE

Apr 8, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 15,293 views
+1 vote
2 answers

Unable to create external table on HIVE

Hi @Ozer, This error occurred because there is ...READ MORE

Nov 7, 2019 in Big Data Hadoop by Richa
 • 6,471 views
0 votes
1 answer

Difference between Cluster and nodes?

In Hadoop distributed system, Node is a single ...READ MORE

Apr 9, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 15,089 views
0 votes
0 answers

Grant role is getting error, while executing

Hi, I am trying to grant a role ...READ MORE

Feb 14, 2020 in Big Data Hadoop by Mahboob
 • 140 points • 1,684 views
0 votes
2 answers

Function of “hadoop namenode -format” command

Namenode is the node in the Hadoop ...READ MORE

Feb 4, 2019 in Big Data Hadoop by Kanika
 • 24,094 views
0 votes
3 answers

Sqoop: java.lang.RuntimeException: Could not load db driver class: com.mysql.jdbc.Driver

I add mysql driver for sqoop and it ...READ MORE

Mar 1, 2020 in Big Data Hadoop by Manh Quang
 • 180 points • 9,379 views
+2 votes
0 answers

MapReduce Job is failed: "Job failed as tasks failed. failed Maps:1 failed Reduces:0"

Hi everyone This is an error that I'm ...READ MORE

Jan 17, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,501 views
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