Recent questions tagged hadoop

+1 vote
2 answers

Hadoop Learning Path

Nov 26, 2019 in Big Data Hadoop by anonymous
 • 130 points • 2,030 views
+1 vote
1 answer

datanode decomissioning

Nov 25, 2019 in Big Data Hadoop by Saif
 • 130 points • 1,248 views
+2 votes
0 answers

Hello, trying to install Hadoop on single node. Error: in screenshot

Nov 20, 2019 in Big Data Hadoop by faris
 • 140 points • 1,661 views
+1 vote
0 answers

Oozie filter all coordinator jobs based on nominalTime

Nov 12, 2019 in Big Data Hadoop by Thayanban
 • 130 points • 1,637 views
0 votes
1 answer

Sqoop could not load db driver class

Oct 25, 2019 in Big Data Hadoop by Ritu
 • 120 points • 4,037 views
+1 vote
2 answers

Unable to create external table on HIVE

Oct 14, 2019 in Big Data Hadoop by Ozer
 • 130 points • 5,544 views
+1 vote
0 answers

Class not found exception in wordcount program in mapreduce

Oct 3, 2019 in Big Data Hadoop by Tarun
 • 160 points • 2,570 views
+1 vote
1 answer

flume twitter data file not generated in HDFS

Sep 26, 2019 in Big Data Hadoop by chandanarora
 • 130 points • 6,973 views
+1 vote
1 answer

Client not able to connect to cluster

Sep 21, 2019 in Big Data Hadoop by raghavendra
 • 160 points • 1,509 views
+1 vote
1 answer

2 datanodes is slower ,how to get those details .what is your approach as hadoop admin

Sep 21, 2019 in Big Data Hadoop by raghavendra
 • 160 points • 2,494 views
+1 vote
2 answers

How to find the database daily refresh time / sync up time

Sep 17, 2019 in Big Data Hadoop by Hemanth
 • 250 points • 10,760 views
+1 vote
0 answers

Directory not found while using java -classpath

Sep 14, 2019 in Big Data Hadoop by shravanth
 • 1,070 views
0 votes
1 answer

How to run Hadoop 2.1.0 in Windows System?

Sep 11, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,657 views
+1 vote
1 answer

" org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Permissions incorrectly set for dir " problem

Sep 9, 2019 in Big Data Hadoop by Na
 • 6,202 views
+1 vote
1 answer

Namenode v/s Secondary namenode

Sep 9, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 6,048 views
0 votes
1 answer

Warning: unable to load hadoop native library

Sep 9, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,076 views
+1 vote
0 answers

hdfs namenode -format not working, not showing anything.

Sep 6, 2019 in Big Data Hadoop by nar
 • 2,014 views
0 votes
1 answer

Secondary Sorting in Hadoop MapReduce

Sep 5, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,407 views
0 votes
1 answer

How to call MapReduce program using a simple Java Program?

Sep 4, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,086 views
+1 vote
1 answer

sql exception when exporting

Sep 4, 2019 in Big Data Hadoop by Hemanth
 • 250 points • 3,881 views
+1 vote
0 answers

i tried to run hdfs namenode -format but i got this instead, -classpath and D:\Hadoop isn't recognized. Anyone can help? Thank you.

Sep 3, 2019 in Big Data Hadoop by Fuad
 • 2,169 views
0 votes
0 answers

HIve query data dates issue

Aug 22, 2019 in Big Data Hadoop by anonymous
 • 1,940 views
+1 vote
0 answers

Output of dump command has empty records

Aug 10, 2019 in Big Data Hadoop by Manju Bhargavi
 • 1,528 views
0 votes
1 answer

Sqoop - moving data from DB2 to HDFS ( hive partition table)

Aug 9, 2019 in Big Data Hadoop by Tina
 • 5,224 views
0 votes
1 answer

Exception in thread "main" java.lang.NoClassDefFoundError

Aug 9, 2019 in Big Data Hadoop by Reshma
 • 3,272 views
0 votes
1 answer

Unable to find Java and eclipse installation on my webconsole.

Aug 9, 2019 in Big Data Hadoop by Nisha
 • 1,190 views
0 votes
1 answer

Load data into teradata using sqoop export

Aug 9, 2019 in Big Data Hadoop by Prateek
 • 4,827 views
0 votes
1 answer

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

Aug 9, 2019 in Big Data Hadoop by Sushma
 • 1,968 views
0 votes
1 answer

When do Reduce tasks start in Hadoop?

Aug 9, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,210 views
0 votes
1 answer

Fastest way to load bulk data in to HBase through a program

Aug 8, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,252 views
0 votes
1 answer

Difference between Text and String in Hadoop

Aug 8, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,802 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.

Aug 8, 2019 in Big Data Hadoop by Ramisha
 • 2,023 views
0 votes
1 answer

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

Aug 7, 2019 in Big Data Hadoop by Sheena
 • 1,946 views
0 votes
1 answer

Error: ERROR security.UserGroupInformation: PriviledgedActionException as:root (auth:SIMPLE)

Aug 7, 2019 in Big Data Hadoop by Nashima
 • 2,243 views
0 votes
1 answer

Hadoop: ERROR1070: Could not resolve count using imports: [, java.lang., org.apache.pig.builtin., org.apache.pig.impl.builtin.]

Aug 7, 2019 in Big Data Hadoop by Nikitha
 • 3,232 views
0 votes
1 answer

Hadoop: Error: Exception in thread "main" java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected

Aug 7, 2019 in Big Data Hadoop by Tanurima
 • 2,515 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;

Aug 7, 2019 in Big Data Hadoop by Shrinivash
 • 2,005 views
0 votes
1 answer

Hadoop: Error: Hadoop Master cannot start the Slave with different user (or) Slave with different user failed to start by Hadoop Master node.

Aug 7, 2019 in Big Data Hadoop by Karthik
 • 2,261 views
0 votes
1 answer

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

Aug 7, 2019 in Big Data Hadoop by Sunny
 • 2,286 views
0 votes
0 answers

ava.sql.SQLException: Error while processing statement:

Aug 7, 2019 in Big Data Hadoop by Hemanth
 • 250 points • 3,191 views
0 votes
1 answer

Zookeeper: client.HConnnectionManager HConbectionImplementation: Cant get connection to Zookeeper:KeeperErrorCode

Aug 6, 2019 in Big Data Hadoop by Banshee
 • 1,249 views
0 votes
1 answer

Unable to create table in Hive

Aug 6, 2019 in Big Data Hadoop by Tina
 • 1,276 views
0 votes
1 answer

Error: Zookeeper address not found from MapRFilesystem

Aug 5, 2019 in Big Data Hadoop by Risha
 • 2,070 views
+1 vote
2 answers

Error: com/eng/mr/WordCountDriver : Unsupported major.minor version 52.0

Aug 5, 2019 in Big Data Hadoop by Disha
 • 1,314 views
+1 vote
2 answers

Hadoop: Error: Exception in thread “main” java.lang.UnsupportedClassVersionError: a

Aug 5, 2019 in Big Data Hadoop by Trina
 • 2,610 views
0 votes
1 answer

How to assign server access to client(s) through NFS export file?

Aug 5, 2019 in Big Data Hadoop by Ratan
 • 1,180 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

Aug 5, 2019 in Big Data Hadoop by pavitra
 • 1,694 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

Aug 5, 2019 in Big Data Hadoop by Sudarshan
 • 1,732 views
0 votes
1 answer

Hadoop: ERROR datanode.DataNode: All directories in dfs.data.dir are invalid.

Aug 5, 2019 in Big Data Hadoop by Jigar
 • 2,483 views
0 votes
1 answer

ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed. java.io.FileNotFoundException: /app/hadoop/tmp/dfs/name/in_use.lock

Aug 5, 2019 in Big Data Hadoop by Rashmi
 • 2,476 views
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