Most answered questions in Big Data Hadoop

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

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

Mar 31, 2020 in Big Data Hadoop by MD
• 95,440 points
3,533 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
• 95,440 points
1,334 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
• 95,440 points
1,092 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, 2020 in Big Data Hadoop by MD
• 95,440 points
5,092 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, 2020 in Big Data Hadoop by MD
• 95,440 points
19,482 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
• 95,440 points
2,248 views
+2 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, 2020 in Big Data Hadoop by MD
• 95,440 points
10,768 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, 2020 in Big Data Hadoop by MD
• 95,440 points
5,639 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
• 95,440 points
1,335 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
• 95,440 points
1,043 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
• 65,910 points
2,698 views
0 votes
1 answer

how to make an existing hadoop cluster self adaptive?

Hey, @Sanjana, You can't shrink or expand nodes ...READ MORE

Jul 16, 2020 in Big Data Hadoop by Gitika
• 65,910 points
575 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
• 95,440 points
2,544 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
• 95,440 points
8,971 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
• 95,440 points
1,407 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
• 95,440 points
2,777 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
1,102 views
+1 vote
1 answer

what is splunk?

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

Jan 24, 2020 in Big Data Hadoop by Vardhan
514 views
+1 vote
1 answer

About Available Space Block Placement Policy

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

Jan 29, 2020 in Big Data Hadoop by MD
• 95,440 points
849 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
1,660 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
2,130 views
+1 vote
1 answer

Unhandled internal error. Java heap space

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

Jan 21, 2020 in Big Data Hadoop by anonymous
829 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
586 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
7,314 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
2,905 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
3,143 views
+1 vote
1 answer

Client not able to connect to cluster

There could be multiple reasons: Make sure you ...READ MORE

Sep 23, 2019 in Big Data Hadoop by Rishi
718 views
+1 vote
1 answer

2 datanodes is slower ,how to get those details .what is your approach as hadoop admin

First, enable the detection of slow nodes. ...READ MORE

Sep 23, 2019 in Big Data Hadoop by Riya
1,584 views
+1 vote
1 answer

bash: sbin/hadoop: No such file or directory

The hadoop command is not present in ...READ MORE

Sep 18, 2019 in Big Data Hadoop by Omkar
• 69,230 points
3,752 views
0 votes
1 answer

How to run Hadoop 2.1.0 in Windows System?

Same problem but with recent Hadoop v. ...READ MORE

Sep 11, 2019 in Big Data Hadoop by ravikiran
• 4,620 points
1,938 views
+1 vote
1 answer

" org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Permissions incorrectly set for dir " problem

This error is caused when hadoop tries ...READ MORE

Sep 9, 2019 in Big Data Hadoop by Kumar
4,355 views
+1 vote
1 answer

Namenode v/s Secondary namenode

Name Node is a primary node in ...READ MORE

Sep 9, 2019 in Big Data Hadoop by ravikiran
• 4,620 points
4,451 views
0 votes
1 answer

Warning: unable to load hadoop native library

Just append word native to your HADOOP_OPTS lik ...READ MORE

Sep 9, 2019 in Big Data Hadoop by ravikiran
• 4,620 points
1,319 views
0 votes
1 answer

Secondary Sorting in Hadoop MapReduce

Grouping Comparator Once the data reaches a reducer, ...READ MORE

Sep 5, 2019 in Big Data Hadoop by ravikiran
• 4,620 points
1,665 views
0 votes
1 answer

How to call MapReduce program using a simple Java Program?

Because map and reduce run on different ...READ MORE

Sep 4, 2019 in Big Data Hadoop by ravikiran
• 4,620 points
1,047 views
+1 vote
1 answer

sql exception when exporting

Hello @Hemanth, the error String or binary data ...READ MORE

Sep 4, 2019 in Big Data Hadoop by Ramya
2,502 views
+1 vote
1 answer

What are all the Data quality checks we do in our real time Big Data projects.

You can use a checksum to compare ...READ MORE

Sep 4, 2019 in Big Data Hadoop by Tina
1,786 views
0 votes
1 answer

which one is better bigdata or devops for career

I think Big Data will be good ...READ MORE

Aug 26, 2019 in Big Data Hadoop by Karan
2,357 views
0 votes
1 answer

I want to change the string datatype to timestamp, can anyone help me??

I am not sure if you want ...READ MORE

Aug 22, 2019 in Big Data Hadoop by Karan
481 views
0 votes
1 answer
0 votes
1 answer

Sqoop - moving data from DB2 to HDFS ( hive partition table)

sqoop import --driver com.ibm.db2.jcc.DB2Driver --connect jdbc:db2://db2.my.com:50000/databaseName --username ...READ MORE

Aug 9, 2019 in Big Data Hadoop by Payal
4,406 views
0 votes
1 answer

Exception in thread "main" java.lang.NoClassDefFoundError

As far I can make out from ...READ MORE

Aug 9, 2019 in Big Data Hadoop by Arpit
2,193 views
0 votes
1 answer

Unable to find Java and eclipse installation on my webconsole.

You can either install java and eclipse ...READ MORE

Aug 9, 2019 in Big Data Hadoop by Isha
553 views
0 votes
1 answer

Load data into teradata using sqoop export

The general syntax to do this as ...READ MORE

Aug 9, 2019 in Big Data Hadoop by Kunal
3,887 views
0 votes
1 answer

When do Reduce tasks start in Hadoop?

As much I understand Reduce phase start ...READ MORE

Aug 9, 2019 in Big Data Hadoop by ravikiran
• 4,620 points
569 views
0 votes
1 answer

Fastest way to load bulk data in to HBase through a program

I've gone through a process that is ...READ MORE

Aug 8, 2019 in Big Data Hadoop by ravikiran
• 4,620 points
1,500 views
0 votes
1 answer

Difference between Text and String in Hadoop

The binary representation of a Text object ...READ MORE

Aug 8, 2019 in Big Data Hadoop by ravikiran
• 4,620 points
2,019 views