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Tag
Mapreduce
Recent questions tagged mapreduce
0
votes
1
answer
What is the purpose of shuffling and sorting phase in the reducer in Map Reduce?
Dec 20, 2020
in
Big Data Hadoop
by
akhtar
•
38,120
points
•
82
views
hadoop
big-data
mapreduce
0
votes
1
answer
How input splits are done when 2 blocks are spread across different nodes?
Dec 7, 2020
in
Big Data Hadoop
by
Rajiv
•
8,880
points
•
31
views
hadoop
big-data
bigdata
mapreduce
0
votes
1
answer
How does Hadoop process records split across block boundaries?
Dec 7, 2020
in
Big Data Hadoop
by
Roshni
•
10,400
points
•
29
views
hadoop
big-data
mapreduce
0
votes
1
answer
Moving historyserver to another instance using curl command
Nov 9, 2020
in
Big Data Hadoop
by
Shilpa S
•
450
points
•
57
views
hadoop
big-data
mapreduce-java
mapreduce
0
votes
1
answer
Map reduce history moving instance using curl .
Nov 6, 2020
in
Big Data Hadoop
by
Shilpa S
•
450
points
•
47
views
mapreduce
hadoop
big-data
job-history-server
0
votes
1
answer
How to find the status of MapReduce Job?
Oct 16, 2020
in
Big Data Hadoop
by
akhtar
•
38,120
points
•
40
views
hadoop
big-data
mapreduce
hadoop-admin
0
votes
0
answers
Enable HA for mapreduce jobhistory server
Sep 23, 2020
in
Big Data Hadoop
by
Shilpa S
•
450
points
•
78
views
big-data
hadoop
mapreduce
devops
devops-tools
0
votes
0
answers
How I can kill the jobs using jobID running in local mode with Hadoop
Aug 26, 2020
in
Big Data Hadoop
by
kamboj
•
140
points
•
248
views
hadoop
big-data
mapreduce
mapreduce-java
hadoop-java
0
votes
0
answers
Unable to get the Job status and Group ID java- spark standalone program with databricks
Jul 23, 2020
in
Apache Spark
by
kamboj
•
140
points
•
349
views
apache-spark
big-data
mapreduce
hadoop
0
votes
1
answer
Exception in createBlockOutputStream java.net.SocketTimeoutException: 69000 millis timeout while waiting for channel to be ready for connect.[connection-pending remote=/ xxx:50010]
Apr 30, 2020
in
Big Data Hadoop
by
akhtar
•
38,120
points
•
461
views
big-data
mapreduce
hadoop
0
votes
1
answer
kernel: java: page allocation failure. order:4, mode:0x20
Apr 30, 2020
in
Big Data Hadoop
by
akhtar
•
38,120
points
•
187
views
big-data
hadoop
mapreduce
0
votes
1
answer
Error mapreduce.Job: Task Id : attempt_1475517800829_0009_m_000000_0, Status : FAILED Error: Java heap space
Apr 17, 2020
in
Big Data Hadoop
by
Hasid
•
370
points
•
516
views
hadoop
big-data
mapreduce
mapreduce-java
+2
votes
0
answers
MapReduce Job is failed: "Job failed as tasks failed. failed Maps:1 failed Reduces:0"
Jan 17, 2020
in
Big Data Hadoop
by
akhtar
•
38,120
points
•
217
views
hadoop
big-data
mapreduce
+1
vote
0
answers
Class not found exception in wordcount program in mapreduce
Oct 3, 2019
in
Big Data Hadoop
by
Tarun
•
160
points
•
248
views
mapreduce
hadoop
big-data
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
•
281
views
java
big-data
mapreduce
hadoop
+1
vote
1
answer
sql exception when exporting
Sep 4, 2019
in
Big Data Hadoop
by
Hemanth
•
240
points
•
689
views
big-data
hadoop
mapreduce
sqoop
apache-hive
0
votes
1
answer
Exception in thread "main" java.lang.NoClassDefFoundError
Aug 9, 2019
in
Big Data Hadoop
by
Reshma
•
814
views
hadoop
big-data
mapreduce
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
•
390
views
hadoop
big-data
mapreduce
0
votes
0
answers
Job failed as tasks failed. failedMaps
Aug 1, 2019
in
Big Data Hadoop
by
Hemanth
•
240
points
•
2,726
views
hadoop
big-data
apache-sqoop
mapreduce
0
votes
1
answer
FAILEDError: java.io.IOException: Type mismatch in key from map
Jul 30, 2019
in
Big Data Hadoop
by
Will
•
438
views
mapreduce
hadoop
big-data
0
votes
1
answer
Explanation to outputcollector vs context
Jul 26, 2019
in
Big Data Hadoop
by
Jai
•
326
views
mapreduce
hadoop
big-data
0
votes
1
answer
Classes implementing InputFormat frequently
Jul 24, 2019
in
Big Data Hadoop
by
Piyush
•
71
views
mapreduce
hadoop
big-data
0
votes
1
answer
Mapreduce: custom Input format
Jul 24, 2019
in
Big Data Hadoop
by
Ritu
•
286
views
mapreduce
hadoop
big-data
0
votes
1
answer
Index LZO files
Jul 24, 2019
in
Big Data Hadoop
by
Wasim
•
144
views
apache-hive
hadoop
big-data
mapreduce
0
votes
1
answer
Produce compressed data from map reduce
Jul 24, 2019
in
Big Data Hadoop
by
sanjeev
•
76
views
mapreduce
hadoop
big-data
0
votes
1
answer
Running Mapreduce on compressed data
Jul 24, 2019
in
Big Data Hadoop
by
Vidya
•
74
views
mapreduce
hadoop
big-data
0
votes
1
answer
How to Compress Map output?
Jul 24, 2019
in
Big Data Hadoop
by
karan
•
221
views
mapreduce
hadoop
big-data
0
votes
1
answer
Input file name in the mapper in a Hadoop program
Jul 23, 2019
in
Linux Administration
by
Upasana
•
8,620
points
•
1,006
views
hadoop
big-data
mapreduce
0
votes
1
answer
Can we use different input and output format classes?
Jul 22, 2019
in
Big Data Hadoop
by
Tilak
•
103
views
mapreduce
hadoop
big-data
0
votes
1
answer
Why do we use job.waitForCompletion(true) ?
Jul 22, 2019
in
Big Data Hadoop
by
Raghu
•
261
views
mapreduce
hadoop
big-data
0
votes
1
answer
Mapreduce: What is the use of setting the name of the job?
Jul 22, 2019
in
Big Data Hadoop
by
Quil
•
168
views
mapreduce
hadoop
big-data
0
votes
1
answer
Output types of mapper and reducer does not match
Jul 22, 2019
in
Big Data Hadoop
by
Karan
•
1,100
views
mapreduce
hadoop
big-data
0
votes
1
answer
Which one is better MR or Spark?
Jul 15, 2019
in
Big Data Hadoop
by
Lohit
•
397
views
mapreduce
hadoop
big-data
apache-spark
0
votes
2
answers
Exception in thread "main" java.lang.UnsupportedClassVersionError
Jul 15, 2019
in
Big Data Hadoop
by
KS
•
333
views
mapreduce
hadoop
big-data
0
votes
2
answers
How to set up Map and Reduce Tasks?
Jul 12, 2019
in
Big Data Hadoop
by
nitinrawat895
•
11,380
points
•
539
views
hadoop
big-data
map
reduce
bigdata
mapreduce
0
votes
1
answer
Working of map function on data
Jul 11, 2019
in
Apache Spark
by
Medha
•
118
views
apache-spark
big-data
mapreduce
hadoop
0
votes
1
answer
Can we use different i/p and o/p format classes in mapreduce code?
Jul 9, 2019
in
Big Data Hadoop
by
Joshua
•
132
views
mapreduce
hadoop
big-data
0
votes
1
answer
What is the use of setting the name of the job in mapreduce?
Jul 9, 2019
in
Big Data Hadoop
by
Quill
•
103
views
mapreduce
hadoop
big-data
0
votes
1
answer
How to solve error caused due to output types of mapper and reducer not matching?
Jul 9, 2019
in
Big Data Hadoop
by
Karan
•
201
views
mapreduce
hadoop
big-data
0
votes
1
answer
How does Hadoop process data which is split across multiple boundaries in an HDFS?
Jul 1, 2019
in
Big Data Hadoop
by
nitinrawat895
•
11,380
points
•
170
views
hadoop
big-data
mapreduce
0
votes
1
answer
What are the challenges we faced as Hadoop Admin?
Jun 25, 2019
in
Big Data Hadoop
by
deepak
•
598
views
hadoop
big-data
yarn
apache-sqoop
mapreduce
apache-spark
flume
hive
cloud-computing
cloudera
0
votes
1
answer
Code was tested successfully in Dev and Test. When deployed to Productions it is failing. As an admin, how do you track the issue?
Jun 21, 2019
in
Big Data Hadoop
by
Deepak P
•
183
views
hdfs
hadoop
big-data
yarn
mapreduce
namenode
hbase
aws
devops-tools
devops
0
votes
2
answers
if HDFS threshold has been reached. What is the our approach to resolve this issue?
Jun 21, 2019
in
Big Data Hadoop
by
Manish
•
280
views
hadoop
big-data
hdfs
yarn
mapreduce
namenode
0
votes
1
answer
Difference b/w reduce and reduceLeft
Jun 20, 2019
in
Big Data Hadoop
by
Keshav
•
1,042
views
hadoop
big-data
mapreduce
0
votes
1
answer
Multiple input for MapReduce job
Jun 20, 2019
in
Big Data Hadoop
by
Kunal
•
473
views
big-data
hadoop
mapreduce
0
votes
1
answer
Error: Container is running beyond Memory Limits
Jun 20, 2019
in
Big Data Hadoop
by
nitinrawat895
•
11,380
points
•
3,064
views
mapreduce
hadoop
big-data
0
votes
1
answer
In Which cluster(Dev or Prod) we test the job?
Jun 20, 2019
in
Big Data Hadoop
by
Manish
•
95
views
hadoop
big-data
hive
sqoop
mapreduce
0
votes
1
answer
Explain how the MongoDB MapReduce and Hadoop MapReduce are similar to each other and explain the differences if there are any.
Jun 18, 2019
in
Big Data Hadoop
by
nitinrawat895
•
11,380
points
•
110
views
hadoop
big-data
mapreduce
mongodb
0
votes
1
answer
Command use to kill the job in MapReduce.
Jun 14, 2019
in
Big Data Hadoop
by
rajiv
•
103
views
mapreduce
hadoop
big-data
0
votes
1
answer
How to see the history of Job output-dir in MapReduce?
Jun 14, 2019
in
Big Data Hadoop
by
sahit
•
211
views
mapreduce
hadoop
big-data
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