Trending questions in Big Data Hadoop

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whenever i trying to put the data file on hdfs then this types or error ate encountered.

Try -copyFromLocal command READ MORE

Aug 23, 2019 in Big Data Hadoop by Nagajyothi
 • 160 points • 1,371 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
 • 15,679 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
 • 65,730 points • 1,870 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
 • 5,237 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
 • 5,056 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
 • 2,172 views
0 votes
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
 • 65,730 points • 4,884 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
 • 65,730 points • 1,749 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
 • 2,104 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
 • 1,663 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 • 3,177 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
 • 65,730 points • 1,729 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
 • 2,955 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
 • 2,178 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 • 2,174 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
 • 65,730 points
edited Aug 7, 2019 by Gitika • 1,650 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
 • 65,730 points • 1,719 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
 • 2,844 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
 • 2,508 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 • 938 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 • 3,384 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 • 1,866 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
 • 65,730 points • 3,455 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 • 3,642 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
 • 1,794 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
 • 2,034 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 • 2,170 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
 • 2,718 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
 • 817 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
 • 65,730 points • 3,258 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
 • 2,425 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
 • 1,643 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
 • 1,283 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
 • 1,890 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
 • 3,454 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
 • 65,730 points • 1,391 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
 • 3,969 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
 • 1,946 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
 • 69,180 points • 9,104 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 • 2,854 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
 • 65,730 points • 1,371 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
 • 4,224 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
 • 1,630 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
 • 65,730 points • 4,375 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 • 2,408 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
 • 708 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
 • 1,271 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
 • 65,730 points • 3,130 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
 • 1,590 views
0 votes
1 answer

Name node RAM metadata

For the above requirement, the memory consumption ...READ MORE

Jul 23, 2019 in Big Data Hadoop by Reshma
 • 1,834 views
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