Trending questions in Big Data Hadoop

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Hadoop: Error: Could not find or load main class org.apache.hadoop.util.VersionInfo

This seems like a path issue. Add the ...READ MORE

Nov 16, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 13,191 views
0 votes
1 answer

Hadoop: Error: slave: bash: line 0: cd: /opt/hadoop-1.1.0/libexec/..: No such file or directory

Hi,   In this case, it is searching ...READ MORE

Aug 7, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,757 views
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1 answer

How to create znode in zookeeper?

Hey, Create a znode with the given path. The flag argument ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 4,799 views
0 votes
1 answer

Killing oozie Jobs by userid

Suppose you want to kill the jobs ...READ MORE

Jul 29, 2019 in Big Data Hadoop by Esha
 • 2,077 views
0 votes
1 answer

How to enable WebHDFS in the Datanodes?

In the datanodes, open the hdfs-site.xml file and add ...READ MORE

May 24, 2019 in Big Data Hadoop by Garima
 • 4,928 views
0 votes
2 answers

Difference between HDFS and NFS

In NFS, the data is stored only ...READ MORE

Feb 4, 2019 in Big Data Hadoop by Kumar
 • 15,470 views
0 votes
1 answer

FAILEDError: java.io.IOException: Type mismatch in key from map

This error is thrown when the parameters ...READ MORE

Jul 30, 2019 in Big Data Hadoop by Rishi
 • 2,024 views
0 votes
1 answer

Hadoop: ERROR: namenode.NameNode: Could not initialize shared edits dir java.io.IOException: Cannot start an HA namenode with name dirs that need recovery.

Hi, You can do one thing: Create namenode dir with ...READ MORE

Aug 8, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,664 views
0 votes
1 answer

How to find the default database in Hive?

Yes, you can find out which database ...READ MORE

May 20, 2019 in Big Data Hadoop by Shiro
 • 5,083 views
0 votes
1 answer

Exception in thread "main" java.lang.UnsupportedClassVersionError: has been compiled by a more recent version of the Java Runtime

Try removing the / before the input ...READ MORE

Aug 9, 2019 in Big Data Hadoop by Esha
 • 1,576 views
0 votes
1 answer

Hadoop:Error: Network is unreachable; Host Details : local host is: "localhost/127.0.0.1"; destination host is: "boss":32939;

Hey,  I guess there is no IP address ...READ MORE

Aug 7, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,654 views
0 votes
1 answer

How to install RHadoop packages (RMR, RHDFS, RHBase)?

With dev tools you can install directly ...READ MORE

Jul 5, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 3,085 views
0 votes
1 answer

Exporting of ORC file to RDBMS using SQOOP

We have to use Sqoop-HCatalog Integration here. ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Rishi
 • 2,885 views
0 votes
1 answer

Multiple Output format in Hadoop

Each reducer uses an OutputFormat to write ...READ MORE

Jul 26, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,092 views
0 votes
1 answer

Error: Hive show tables does not display table "sqooptest" , which was imported by SQOOP

Hi, You can follow the below-given solution. Just enter ...READ MORE

Aug 7, 2019 in Big Data Hadoop by Gitika
 • 65,770 points
edited Aug 7, 2019 by Gitika • 1,566 views
0 votes
1 answer

Sqoop ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option

If your dataset is in the FTP ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Kunal
 • 2,756 views
0 votes
1 answer

Error: Zookeeper address not found from MapRFilesystem

Hey, Yarn is configured with the "zero-configuration failover". So ...READ MORE

Aug 6, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,610 views
0 votes
2 answers

Error in running hdfs commands

Hey, You can check this command also  hadoop fs ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Rashi
 • 2,034 views
0 votes
0 answers

Cloudera Certification

Hi, I want to write CCA-175 (CCA Spark ...READ MORE

Aug 23, 2019 in Big Data Hadoop by Nagajyothi
 • 160 points • 871 views
0 votes
1 answer

Issue with Python Read file as stream from HDFS.

The easiest way is using the following ...READ MORE

Jun 26, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 3,311 views
0 votes
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
 • 2,379 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
 • 65,770 points • 3,358 views
0 votes
1 answer

The total number of Data Nodes running in this operation are 0 and note that there are no nodes excluded in this process.

Follow these steps: STEP 1 : stop hadoop ...READ MORE

Jul 31, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,750 views
0 votes
1 answer

Cassandra: time out when using select * or copy command

If we get the TimeOut Exception, then ...READ MORE

Aug 1, 2019 in Big Data Hadoop by Esha
 • 1,704 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 • 3,532 views
0 votes
1 answer

Explanation to outputcollector vs context

Both codes contain different API of Map ...READ MORE

Jul 26, 2019 in Big Data Hadoop by Rasheed
 • 1,939 views
0 votes
1 answer

Sqoop import error with sqoop job

Please try the below command: sqoop job -create ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Rina
 • 2,636 views
0 votes
1 answer

How to Sqoop in a Java Program?

You can use the following sample code for ...READ MORE

Jul 22, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,067 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
 • 741 views
0 votes
1 answer

What is the significance of ‘IF EXISTS” clause while dropping a table in Hive?

Hi, Since the table being dropped does not ...READ MORE

Jun 26, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 3,169 views
0 votes
1 answer

Load data into teradata using sqoop

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

Jul 15, 2019 in Big Data Hadoop by Ritu
 • 2,344 views
0 votes
1 answer

Can't seem to read files: "Invalid container ID"

You will have to start pig first ...READ MORE

Aug 2, 2019 in Big Data Hadoop by TIna
 • 1,557 views
+1 vote
0 answers

Output of dump command has empty records

this is my input file output_pig_group_education_comma/input_load.txt and its ...READ MORE

Aug 10, 2019 in Big Data Hadoop by Manju Bhargavi
 • 1,227 views
0 votes
2 answers

Exception in thread "main" java.lang.UnsupportedClassVersionError

Hi, keep in mind do not forget to ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Rashi
 • 1,792 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
 • 3,359 views
0 votes
1 answer

HBase shell failed to connect

Enter the below command in the terminal ...READ MORE

Jul 23, 2019 in Big Data Hadoop by Joshua
 • 1,875 views
0 votes
1 answer

Load data from HDFS to hive

You can't directly create a parquet table. ...READ MORE

Feb 8, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 9,029 views
0 votes
1 answer

Hadoop: ERROR: datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in /app/hadoop/tmp/dfs/data: namenode namespaceID = 1580775695; datanode namespaceID = 1494801914

Hi, Namenode generates new namespaceID every time you ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,284 views
0 votes
0 answers

How to replicate task so that a task will be computed by two mappers? Or each task will be done twice.

i want replicate task of mapper but ...READ MORE

Aug 21, 2019 in Big Data Hadoop by dodo aly
 • 649 views
0 votes
1 answer

How to subtract month from Impala time stamp?

You don't need another method, you can ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Tina
 • 3,856 views
0 votes
1 answer

Hadoop: ERROR: datanode.DataNode: java.io.IOException: Datanode state: LV = -32 CTime = 1377582559943 is newer than the namespace state: LV = -32 CTime = 0

Hey, You can do one thing, open the file ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,260 views
0 votes
1 answer

failed to start the Namenode format in hadoop generation 2

Hi, You can check this out: 1. Delete all ...READ MORE

Jul 2, 2019 in Big Data Hadoop by Ria
edited Jul 2, 2019 by Gitika • 2,722 views
0 votes
1 answer

Command to stop the zookeeper server?

Hey, After connecting the server and performing all ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 4,249 views
0 votes
2 answers

Namenode is not getting started

Hi, You can do one thing, first delete all ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Namisha
 • 1,494 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
 • 65,770 points • 3,042 views
0 votes
1 answer

How to set Hive Server port?

You can set the port in the hive-site.xml file. ...READ MORE

May 31, 2019 in Big Data Hadoop by Aisha
 • 4,062 views
0 votes
1 answer

Unable to Locate WinUtils Library in Hadoop binary path.

If you are facing this problem while running a ...READ MORE

Jul 11, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,288 views
0 votes
1 answer

Error while Loading data to Hive.

Your data node is not running that ...READ MORE

Jul 29, 2019 in Big Data Hadoop by Quill
 • 1,506 views
+1 vote
2 answers

Hadoop Administration

Make the following changes to your configuration ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Simran
 • 1,164 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, 2019 in Big Data Hadoop by Hansini
 • 3,208 views
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