Trending questions in Big Data Hadoop

+1 vote
11 answers

hadoop fs -put command?

put syntax: put <localSrc> <dest> copy syntax: copyFr ...READ MORE

Dec 7, 2018 in Big Data Hadoop by Aditya
 • 25,982 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

18 hours ago in Big Data Hadoop by MD
 • 9,170 points • 12 views
0 votes
1 answer

Implementation in Hadoop

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

3 days ago in Big Data Hadoop by MD
 • 9,170 points • 25 views
0 votes
1 answer

8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused

Hi@Bhavesh,  You got connection refused. So, there may ...READ MORE

4 days ago in Big Data Hadoop by MD
 • 9,170 points • 36 views
0 votes
1 answer

nodetool: Failed to connect to '127.0.0.1:7199' - ConnectException: 'Connection refused (Connection refused)'.

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

5 days ago in Big Data Hadoop by MD
 • 9,170 points • 38 views
0 votes
2 answers

How to set properties for secondary namenode in Hadoop?

Secondary NameNode in HDFS Secondary NameNode in Hadoop ...READ MORE

6 days ago in Big Data Hadoop by anonymous
 • 38 views
0 votes
1 answer

How to create table in cassandra?

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

5 days ago in Big Data Hadoop by MD
 • 9,170 points • 17 views
0 votes
1 answer

How to set pssword based authentication in cassandra?

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

5 days ago in Big Data Hadoop by MD
 • 9,170 points • 13 views
0 votes
1 answer

SyntaxException: line 1:67 no viable alternative at input ',' (... University with replication={'class':[SimpleStrategy],...)

Hi@akhtar, It is showing syntax error in your ...READ MORE

5 days ago in Big Data Hadoop by MD
 • 9,170 points • 13 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

5 days ago in Big Data Hadoop by MD
 • 9,170 points • 11 views
0 votes
1 answer

configure Cassendra in Linux system?

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

5 days ago in Big Data Hadoop by MD
 • 9,170 points • 13 views
0 votes
1 answer

create table in Hbase using Java API

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

6 days ago in Big Data Hadoop by MD
 • 9,170 points • 52 views
0 votes
1 answer

ERROR org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper - ZooKeeper exists failed after 4 attempts

Hi@akhtar, This error shows, Hbase is not able ...READ MORE

6 days ago in Big Data Hadoop by MD
 • 9,170 points • 19 views
0 votes
1 answer

ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: ZooKeeper session expired

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

6 days ago in Big Data Hadoop by MD
 • 9,170 points • 12 views
0 votes
1 answer

ERROR: org.apache.hadoop.hbase.ipc.ServerNotRunningYetException: Server is not running yet!

Hi@akhtar, This error occurs if the hbase server ...READ MORE

Mar 30 in Big Data Hadoop by MD
 • 9,170 points • 20 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 in Big Data Hadoop by MD
 • 9,170 points • 19 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 in Big Data Hadoop by MD
 • 9,170 points • 18 views
+10 votes
11 answers

Hadoop “Unable to load native-hadoop library for your platform” warning

modify the glibc version.CentOS provides safe softwares ...READ MORE

Sep 10, 2018 in Big Data Hadoop by bug_seeker
 • 15,390 points • 20,492 views
0 votes
1 answer

How do you find an HDFS path URL?

Hi@akhtar, The Hadoop configuration file is default located ...READ MORE

Feb 28 in Big Data Hadoop by MD
 • 9,170 points • 259 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 in Big Data Hadoop by MD
 • 9,170 points • 125 views
0 votes
1 answer

FileStreamSink: Error while looking for metadata directory. java.lang.IllegalArgumentException: java.net.UnknownHostException: hive

Hi@akhtar, You tried to read file from your ...READ MORE

Feb 13 in Big Data Hadoop by MD
 • 9,170 points • 445 views
0 votes
1 answer

apache.spark.sql.AnalysisException: Text data source does not support int data type.;

Hi@akhtar, I think your output is in different ...READ MORE

Feb 13 in Big Data Hadoop by MD
 • 9,170 points • 119 views
0 votes
0 answers

Sentry: Grant role is getting error, while executing

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

Feb 13 in Big Data Hadoop by Mahboob
 • 140 points • 132 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 in Big Data Hadoop by MD
 • 9,170 points • 92 views
0 votes
0 answers

Grant role is getting error, while executing

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

Feb 13 in Big Data Hadoop by Mahboob
 • 140 points • 125 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 in Big Data Hadoop by MD
 • 9,170 points • 52 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 in Big Data Hadoop by Gitika
 • 26,390 points • 69 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 in Big Data Hadoop by syam
 • 120 points
edited Feb 12 by Gitika • 53 views
0 votes
0 answers

how to make an existing hadoop cluster self adaptive?

i have a hadoop cluster of 10 ...READ MORE

Feb 10 in Big Data Hadoop by Sanjana
 • 140 points • 70 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 in Big Data Hadoop by MD
 • 9,170 points • 139 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 in Big Data Hadoop by MD
 • 9,170 points • 113 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 in Big Data Hadoop by MD
 • 9,170 points • 56 views
0 votes
1 answer

What is ETL tool in Hadoop?

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

Feb 2 in Big Data Hadoop by MD
 • 9,170 points • 144 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 in Big Data Hadoop by Roshan
 • 83 views
+1 vote
1 answer

About Available Space Block Placement Policy

Hi, We know, In HDFS data is divided into ...READ MORE

Jan 29 in Big Data Hadoop by MD
 • 9,170 points • 86 views
+1 vote
1 answer

what is splunk?

Splunk is a software platform to search, ...READ MORE

Jan 24 in Big Data Hadoop by Vardhan
 • 62 views
+1 vote
1 answer

Streaming facebook data using Flume framework!!!

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

Jan 21 in Big Data Hadoop by anonymous
 • 100 views
+1 vote
1 answer

Information Unavailable:Running jps command in Hadoop

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

Jan 21 in Big Data Hadoop by anonymous
 • 96 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 in Big Data Hadoop by MD
 • 9,170 points • 71 views
+1 vote
1 answer

Unhandled internal error. Java heap space

Hi As your file size is too large, ...READ MORE

Jan 21 in Big Data Hadoop by anonymous
 • 48 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 in Big Data Hadoop by akhtar
 • 4,580 points • 71 views
+1 vote
0 answers

Hadoop Mapreduce : Null Pointer Exception

While running the below program, I got ...READ MORE

Dec 5, 2019 in Big Data Hadoop by Tarun
 • 160 points • 196 views
+1 vote
1 answer

Hadoop Learning Path

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

Nov 28, 2019 in Big Data Hadoop by Farheen
 • 217 views
0 votes
11 answers

What is the default Namenode port of HDFS. Is it 8020 or 9000 or 50070?

8020/9000 hadoop namenode metadata port number. or ...READ MORE

Dec 31, 2018 in Big Data Hadoop by SM
 • 20,068 views
+1 vote
1 answer

datanode decomissioning

You have set the replication factor to ...READ MORE

Nov 28, 2019 in Big Data Hadoop by Rahul
 • 147 views
+2 votes
0 answers

Hello, trying to install Hadoop on single node. Error: in screenshot

READ MORE

Nov 20, 2019 in Big Data Hadoop by faris
 • 140 points • 198 views
0 votes
1 answer

Sqoop could not load db driver class

Hello, Have you tried to put the both ...READ MORE

Dec 13, 2019 in Big Data Hadoop by Alexandru
 • 510 points • 235 views
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