Most voted questions in Big Data Hadoop

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What are the properties that have to be mentioned in . properties in Oozie?

Hey, These are the listed properties that need ...READ MORE

Jun 26, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 301 views
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1 answer

What are the extra files we need to run when we run a Hive action in Oozie?

Hi, Below are the extra files that need ...READ MORE

Jun 26, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 337 views
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How to Execute job in oozie?

Can anyone explain how to execute Job ...READ MORE

Jun 26, 2019 in Big Data Hadoop by ritam
 • 209 views
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1 answer

How are HDFS and HBase different from each other?

Apache Hadoop project includes four key modules Hadoop ...READ MORE

Jun 25, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 335 views
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2 answers

What is the relationship between Hadoop and Database?

Hadoop software framework work is very well ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Dinesh
 • 651 views
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1 answer

What are the challenges we faced as Hadoop Admin?

Hey,  There are some of the key responsibilities ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 1,498 views
0 votes
1 answer

What is the process to integrate meta store for hive?

Hi. Here are the steps you can ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Jimmy
 • 448 views
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1 answer

How to change the status of Oozie state?

Hi, You can use the command below: $ oozie ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 255 views
0 votes
1 answer

What is the syntax for HiveQL SELECT Statement?

Hey,  You can use this  syntax below: SELECT [ALL ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 290 views
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1 answer

How to check the directory is present in shell script or not?

Hi, To check the directory is present in ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 303 views
0 votes
1 answer

ERROR: Stop Oozie first.

Hey, Actually the problem was that tomcat aborted abnormally and ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 381 views
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1 answer

Error: E0902: Exception occured: [User: oozie is not allowed to impersonate oozie]" when trying to execute sharelib command.

Hey, You can try this, Change the value ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 542 views
0 votes
1 answer

What will happen if the OOZIE_URL environment variable has not been set?

Hey, If the Oozie_URL environment variable has not ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 474 views
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2 answers

E0901: Namenode [localhost:8020] not allowed, not in Oozies whitelist

You can add this below property in oozie-site.xml: <property> <name>oozie.service.HadoopAccessorService.jobTracker.whitelist</name> <value>myaddress:8020</value> </property> Hope ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Shiva
 • 1,163 views
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1 answer

How can you change a column data type in Hive?

Hi, By using this command below one can ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 21,201 views
0 votes
1 answer

How can you enable buckets in Hive?

Hi, By using this command below bucket can be ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 647 views
0 votes
1 answer

Exception: Hadoop security GroupMappingServiceProvider. I have received this exception for running Spark job via Dataproc API

 I hope I understood your issue and ...READ MORE

Jun 24, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 181 views
0 votes
2 answers

What is ElasticSearch Hadoop?

it as a connector that allows data to flow bi-directionaly so ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Dinish
 • 808 views
0 votes
1 answer

What is Oozie Hive submit command?

Hi, You can use this example : oozie hive ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 303 views
0 votes
1 answer

What is Oozie Sqoop submit command?

Hey, This is the command you can use: oozie ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points
edited Jun 26, 2019 by Gitika • 331 views
0 votes
1 answer

How can you Check the xml definition of a Workflow, Coordinator or Bundle Job in Oozie?

Hey, You can use this example so that ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 325 views
0 votes
1 answer

How to Rerunning a Coordinator Action or Multiple Actions in Oozie?

Hey, The rerun option reruns a terminated (=TIMEDOUT=, SUCCEEDED, KILLED, ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 1,973 views
0 votes
1 answer

How to Suspending a Workflow, Coordinator or Bundle Job in Oozie?

Hey, The suspend option suspends a workflow job in RUNNING status. After ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 1,579 views
0 votes
1 answer

What Oozie CLI retries connection used for?

Hi, Oozie CLI retries the connection to Oozie servers ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 257 views
0 votes
1 answer

What are the services running in Hadoop

Below are the services Running in Hadoop Hdfs  yarn mapreduce ozzie zookeeper hive hue hbase impala flume sqoop spark Depending ...READ MORE

Jun 24, 2019 in Big Data Hadoop by deepak
 • 891 views
0 votes
2 answers

Explain to me the difference between Name Node and Secondary Name Node

Secondary namenode is just a helper for ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Dhiman
 • 2,075 views
0 votes
1 answer

What is the use of Apache Kafka in a Big Data Cluster?

Kafka is a Distributed Messaging System which ...READ MORE

Jun 21, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 480 views
0 votes
1 answer

Code was tested successfully in Dev and Test. When deployed to Productions it is failing. As an admin, how do you track the issue?

Hey, In this case, you can do one ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 514 views
0 votes
2 answers

if HDFS threshold has been reached. What is the our approach to resolve this issue?

This was a fundamental issue in HDFS ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 723 views
0 votes
1 answer

How to change the default value and to alter a column in sql?

Hi, You can try this: ALTER TABLE foobar_data CHANGE ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 544 views
0 votes
1 answer

How to remove table scope operators in HBase?

Hi,  Using alter, you can set and remove ...READ MORE

Jun 21, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 441 views
0 votes
1 answer

How to delete a column family from table in HBase?

Hey, You can delete a column family from ...READ MORE

Jun 21, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 2,860 views
0 votes
1 answer

Difference b/w reduce and reduceLeft

The reduceLeft method takes an associative binary ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Kriti
 • 1,878 views
0 votes
2 answers

Error While Running Oozie Project

You need to add your current user ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Dhimanshu
 • 325 views
0 votes
1 answer

How to run PIG script?

Please follow the below screenshots for creating ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Dinesh
 • 632 views
0 votes
1 answer

SQOOP Import command failure

Try this command where the student table ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Suri
 • 189 views
0 votes
1 answer

Query regarding Parquet File type conversion

Suppose I have the below parquet file ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Stuart
 • 209 views
0 votes
1 answer

"Write successful" message from Data node to Name Node

What happens is namenode on the basis ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Quill
 • 287 views
0 votes
1 answer

Does NameNode provide with the IP address of data nodes where replication of data is to be stored?

No, the data node does not select ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Kim
 • 1,265 views
0 votes
1 answer

Is no of block equal no of i/p split, no of container, no of mapper ?

Split size is approximately equal to block ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Ron
 • 304 views
0 votes
1 answer

Multiple input for MapReduce job

We use MultipleInputs class which supports MapReduce ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Jim
 • 3,432 views
0 votes
1 answer

What happens when a datanode that is dead becomes active again?

When NameNode notices that it has not ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Rishi
 • 3,316 views
0 votes
1 answer

Heartbeat time interval for Datanode

The heartbeat interval is 3 seconds by ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Rajat
 • 630 views
0 votes
1 answer

What if Resource Manager fails?

Failure of the resource manager is serious ...READ MORE

Jun 20, 2019 in Big Data Hadoop by John
 • 2,408 views
0 votes
1 answer

Error: Failed to locate WinUtils binary in the Hadoop Binary Path

I will redirect you to a link ...READ MORE

Jun 20, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 8,447 views
0 votes
1 answer

Error: Container is running beyond Memory Limits

I had a similar problem while I was working ...READ MORE

Jun 20, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 5,503 views
0 votes
1 answer

In Which cluster(Dev or Prod) we test the job?

Well, that depends on what a particular ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Raj
 • 265 views
0 votes
1 answer

Help m setting up a multi node hadoop cluster

I can help you on this one. Requirement: ...READ MORE

Jun 20, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 358 views
0 votes
1 answer

Help me solve this error "Unable to load Hadoop Native library for your platform"

I hope I understood your query properly I ...READ MORE

Jun 20, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,233 views
0 votes
1 answer

How to use appnedToFile command in HDFS?

Hey, This Hadoop fs command appends single sources ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Gitika
 • 65,890 points • 1,819 views
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