Most voted questions in Big Data Hadoop

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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 in Big Data Hadoop by Gitika
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31 views
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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 in Big Data Hadoop by Gitika
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98 views
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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 in Big Data Hadoop by Gitika
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124 views
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1 answer

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
26 views
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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
36 views
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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 in Big Data Hadoop by Dhiman
68 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
• 4,560 points
26 views
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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 in Big Data Hadoop by Gitika
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59 views
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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
• 25,340 points
22 views
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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
• 25,340 points
63 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 20 in Big Data Hadoop by Gitika
• 25,340 points
109 views
0 votes
1 answer

Difference b/w reduce and reduceLeft

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

Jun 20 in Big Data Hadoop by Kriti
132 views
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2 answers

Error While Running Oozie Project

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

Aug 6 in Big Data Hadoop by Dhimanshu
40 views
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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
20 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
21 views
0 votes
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
15 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 in Big Data Hadoop by Quill
20 views
0 votes
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
16 views
0 votes
1 answer

Multiple input for MapReduce job

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

Jun 20 in Big Data Hadoop by Jim
27 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 in Big Data Hadoop by Rishi
100 views
0 votes
1 answer

Heartbeat time interval for Datanode

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

Jun 20 in Big Data Hadoop by Rajat
39 views
0 votes
1 answer

What if Resource Manager fails?

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

Jun 20 in Big Data Hadoop by John
60 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 in Big Data Hadoop by ravikiran
• 4,560 points
197 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 in Big Data Hadoop by ravikiran
• 4,560 points
148 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 in Big Data Hadoop by Raj
35 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 19 in Big Data Hadoop by ravikiran
• 4,560 points
37 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 19 in Big Data Hadoop by ravikiran
• 4,560 points
93 views
0 votes
1 answer

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
• 25,340 points
85 views
0 votes
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
• 25,340 points
103 views
0 votes
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
• 25,340 points
20 views
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1 answer

ERROR 1142 (42000): SELECT command denied to user ''@'localhost' for table 'user'

Hey, This is a mysql command line error ...READ MORE

Jun 19 in Big Data Hadoop by Gitika
• 25,340 points
889 views
0 votes
1 answer

ERROR 1227 (42000): Access denied; you need (at least one of) the CREATE USER privilege(s) for this operation.

Hi, You can follow some steps to remove ...READ MORE

Jun 19 in Big Data Hadoop by Gitika
• 25,340 points
147 views
0 votes
1 answer

Is StandBy NameNode a daemon?

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

Jun 19 in Big Data Hadoop by Raman
25 views
0 votes
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
70 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
• 25,340 points
43 views
0 votes
1 answer

Regarding unstructured data handling

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

Jun 19 in Big Data Hadoop by Ranjitha
27 views
0 votes
1 answer

Sqoop Job not working

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

Jun 19 in Big Data Hadoop by Vishwa
23 views
0 votes
1 answer

Hive Connection issue

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

Jun 19 in Big Data Hadoop by Karan
14 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 in Big Data Hadoop by Gitika
• 25,340 points
187 views
0 votes
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
16 views
0 votes
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
34 views
0 votes
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
18 views
0 votes
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
21 views
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0 answers

Hive data load error

I have table in hive with below ...READ MORE

Jun 19 in Big Data Hadoop by Rishi
17 views
0 votes
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
• 25,340 points
32 views
0 votes
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
365 views
0 votes
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
• 25,340 points
50 views
0 votes
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
• 25,340 points
37 views