Trending questions in Big Data Hadoop

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What Oozie CLI retries connection used for?

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

Jun 24 in Big Data Hadoop by Gitika
• 25,340 points
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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 in Big Data Hadoop by deepak
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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 in Big Data Hadoop by Gitika
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21 views
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1 answer

Can we use LIKE operator in Hive?

Hey, Yes, Hive supports LIKE operator, but it ...READ MORE

Jun 18 in Big Data Hadoop by Gitika
• 25,340 points
191 views
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1 answer

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

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

Jun 20 in Big Data Hadoop by ravikiran
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110 views
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1 answer

How to delete a column family from table in HBase?

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

Jun 20 in Big Data Hadoop by Gitika
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74 views
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Difference b/w reduce and reduceLeft

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

Jun 20 in Big Data Hadoop by Kriti
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1 answer

How to remove table scope operators in HBase?

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

Jun 20 in Big Data Hadoop by Gitika
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57 views
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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 in Big Data Hadoop by ravikiran
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23 views
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1 answer

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

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

Jun 20 in Big Data Hadoop by Rishi
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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 in Big Data Hadoop by Gitika
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96 views
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1 answer

How can create the dynamic partition table with data in Hive?

Hi, We can see some steps to do ...READ MORE

Jun 19 in Big Data Hadoop by Gitika
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85 views
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1 answer

Error: Container is running beyond Memory Limits

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

Jun 20 in Big Data Hadoop by ravikiran
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56 views
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1 answer
0 votes
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How to use appnedToFile command in HDFS?

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

Jun 19 in Big Data Hadoop by Gitika
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72 views
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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 19 in Big Data Hadoop by ravikiran
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64 views
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1 answer

What if Resource Manager fails?

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

Jun 20 in Big Data Hadoop by John
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1 answer

Heartbeat time interval for Datanode

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

Jun 20 in Big Data Hadoop by Rajat
30 views
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1 answer

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

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

Jun 20 in Big Data Hadoop by Raj
33 views
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1 answer

Multiple input for MapReduce job

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

Jun 20 in Big Data Hadoop by Jim
21 views
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1 answer

SQOOP Import command failure

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

Jun 20 in Big Data Hadoop by Suri
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1 answer

What is Shared Edit Logs in case of Stand By Name Node in Hadoop 2.x?

Yes, Shared Edit Logs exist in case ...READ MORE

Jun 19 in Big Data Hadoop by Hansini
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1 answer

How to run PIG script?

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

Jun 20 in Big Data Hadoop by Dinesh
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1 answer

"Write successful" message from Data node to Name Node

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

Jun 20 in Big Data Hadoop by Quill
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1 answer
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 in Big Data Hadoop by Ron
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1 answer

Query regarding Parquet File type conversion

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

Jun 20 in Big Data Hadoop by Stuart
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11 answers

How to check size of HDFS directory?

It is the same syntax. Use the ...READ MORE

Jun 6 in Big Data Hadoop by Sowmya
8,840 views
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1 answer

Help m setting up a multi node hadoop cluster

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

Jun 19 in Big Data Hadoop by ravikiran
• 4,560 points
33 views
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13 answers

What is the difference between Hadoop/HDFS & HBase?

HDFS is a distributed file system whereas ...READ MORE

Apr 26 in Big Data Hadoop by Arihar
• 160 points
9,583 views
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1 answer

Is it possible to change the default location of a managed table?

Hi, Yes, you can do it by using ...READ MORE

Jun 18 in Big Data Hadoop by Gitika
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78 views
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1 answer

How setrep command is used and what is the description to this?

Hi, This HDFS command is used to change ...READ MORE

Jun 19 in Big Data Hadoop by Gitika
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33 views
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1 answer

Difference between root of hdfs and local machine

The command hdfs dfs -put command is used to ...READ MORE

Jun 19 in Big Data Hadoop by Mahi
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1 answer

Differentiate between FileSink and FileRollSink

Hey, The major difference between HDFS FileSink and ...READ MORE

Jun 19 in Big Data Hadoop by Gitika
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19 views
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1 answer

Is StandBy NameNode a daemon?

StandBy NameNode is not a separate daemon. ...READ MORE

Jun 19 in Big Data Hadoop by Raman
22 views
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1 answer

Regarding unstructured data handling

There are multiple ways to import unstructured ...READ MORE

Jun 19 in Big Data Hadoop by Ranjitha
21 views
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1 answer

Sqoop Job not working

I have made a little change to ...READ MORE

Jun 19 in Big Data Hadoop by Vishwa
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1 answer

Hdfs cluster and Master/standby Machine

Client submits job to Namenode. To achieve this, Client ...READ MORE

Jun 19 in Big Data Hadoop by Raj
19 views
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1 answer

Custom setting of MapReduce tasks in HIVE

When we set number of mappers to ...READ MORE

Jun 19 in Big Data Hadoop by Ferry
16 views
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1 answer

Unable to go to Hbase Shell

Open the hbase shell using the command hbase ...READ MORE

Jun 19 in Big Data Hadoop by Hiran
15 views
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1 answer

How can we use IN/EXIST operator in Hive?

Hey, Yes, now Hive supports IN or EXIST, ...READ MORE

Jun 19 in Big Data Hadoop by Gitika
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25 views
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1 answer

Hive Connection issue

You are getting the issues probably because ...READ MORE

Jun 19 in Big Data Hadoop by Karan
11 views
0 votes
1 answer

Oozie exception error handling.

Hi, We can set Hive Action configuration using ...READ MORE

Jun 18 in Big Data Hadoop by Gitika
• 25,340 points
48 views
0 votes
1 answer

Differences between Cassandra and Hadoop, Real-time Processing v/s Batch Processing

Hadoop is basically designed including HDFS loaded with ...READ MORE

Jun 18 in Big Data Hadoop by ravikiran
• 4,560 points
60 views
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1 answer

How can we configure remote metastore mode in Hive?

Hey,  Basically, hive-site.xml file has to be configured ...READ MORE

Jun 18 in Big Data Hadoop by Gitika
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39 views
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Command to allows polling the Oozie server for an Oozie job?

Hey, You can use this command to see polling ...READ MORE

Jun 18 in Big Data Hadoop by Gitika
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43 views
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1 answer

Where is table data stored in Apache HIve by default?

Hi, yes, you can do it by using  ...READ MORE

Jun 18 in Big Data Hadoop by Gitika
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31 views
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1 answer
0 votes
1 answer

Error: Tasktracker is not starting

Hey, From the master node, you can start ...READ MORE

Jun 18 in Big Data Hadoop by Gitika
• 25,340 points
21 views