Recent questions tagged big-data

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Checksum verification in Hadoop.

Oct 15, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,931 views
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How to start Hadoop daemons?

Oct 15, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,198 views
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Enable HA for ranger KMS.

Oct 15, 2020 in Big Data Hadoop by anonymous
 • 450 points • 2,019 views
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HA ranger KMS ,

Oct 15, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 1,986 views
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How to store datasets from Pig to HDFS?

Oct 15, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 3,199 views
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1 answer

How to load dataset in Pig?

Oct 14, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,254 views
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Execute the Pig script in Local mode.

Oct 14, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 1,839 views
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How to implement my clustering algorithm in pyspark (without using the ready library for example k-means)?

Oct 14, 2020 in Apache Spark by dani
 • 160 points • 4,136 views
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mkdir: cannot create directory `/var/run/hadoop': Permission denied.

Oct 14, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 5,066 views
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How to create an empty file in Hadoop?

Oct 13, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 16,701 views
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How to remove the directory from HDFS?

Oct 13, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 6,533 views
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org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://localhost:54310/user/hduser/input.

Oct 13, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 4,004 views
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1 answer

How to find the number of blocks for a file in Hadoop?

Oct 13, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 3,935 views
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How to check the name of the hadoop server?

Oct 13, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 4,077 views
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I was installing Hadoop for windows everything went smoothly but when I tried to format NameNode it displayed an error of failing to start NameNode. What should I do?

Oct 10, 2020 in Big Data Hadoop by alex
 • 120 points • 2,433 views
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1 answer

HI i was trying to install hadoop but i get these error....Format HDFS Namenode Error: Could not find or load main class ”-Djava.library.path=.home.hadoop.hadoop-3.2.1.lib"

Oct 7, 2020 in Big Data Hadoop by bezz
 • 120 points • 3,831 views
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1 answer

Ranger kms create key failed

Oct 5, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 3,597 views
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How to view contents of file in hadoop hdfs?

Oct 5, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 9,991 views
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How to find HDFS free space from command line?

Oct 5, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,200 views
0 votes
1 answer

Where does Hive store files in HDFS?

Oct 5, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,307 views
+1 vote
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How to check a HDFS directory size?

Oct 5, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,346 views
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How to change the default replication factor in Hadoop?

Oct 3, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 3,508 views
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1 answer

How to change default block size in Hadoop Cluster?

Oct 3, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 3,950 views
0 votes
1 answer

Change the owner and group of a file in Hadoop.

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 10,417 views
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1 answer

Change permissions of a file in HDFS.

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 3,838 views
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1 answer

How to create a group in Hadoop?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,456 views
0 votes
1 answer

How to append files from local system to HDFS?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 10,250 views
0 votes
1 answer

How to set replication factor in Hadoop?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 9,651 views
0 votes
1 answer

How to merge files in Hadoop?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,501 views
0 votes
1 answer

How to remove files from HDFS system?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 31,112 views
0 votes
1 answer

Copy files in different folders in Hadoop.

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 36,978 views
0 votes
1 answer

How to copy files from HDFS to local system?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 5,969 views
0 votes
1 answer

Setting up Hadoop Multi-node cluster on windows 10 systems

Oct 1, 2020 in Big Data Hadoop by Hassan
 • 120 points • 3,091 views
0 votes
1 answer

Ranger KMS - Curl command

Sep 28, 2020 in Apache Spark by Shilpa S
 • 450 points • 2,675 views
0 votes
1 answer

touchz: io.bytes.per.checksum(512) and blockSize(256) do not match. blockSize should be a multiple of io.bytes.per.checksum

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,256 views
0 votes
1 answer

touchz: java.io.IOException: java.lang.IllegalArgumentException: Unexpected value for the block size

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,012 views
0 votes
1 answer

How to change block size in Hadoop dynamically?

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,460 points • 4,640 views
0 votes
1 answer

How to configure Hadoop Client?

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 4,031 views
0 votes
1 answer

How to upload files in Hadoop Cluster?

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 3,367 views
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Usage: java FsShell [-put <localsrc> ... <dst>]

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 1,851 views
0 votes
1 answer

How to connect Hadoop WebUI?

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,169 views
0 votes
1 answer

How to see the report of Hadoop Cluster from command line?

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 5,236 views
0 votes
0 answers

Enable HA for mapreduce jobhistory server

Sep 23, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 2,793 views
0 votes
1 answer

How to insert data into Cassandra table using Spark DataFrame?

Sep 21, 2020 in Apache Spark by akhtar
 • 38,260 points • 5,324 views
0 votes
1 answer

How to format a Hadoop Master Node?

Sep 21, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 1,738 views
0 votes
1 answer

How to start Hadoop namenode service?

Sep 21, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,338 views
0 votes
1 answer

How to configure Hadoop namenode?

Sep 21, 2020 in Big Data Hadoop by MD
 • 95,460 points • 2,348 views
0 votes
1 answer

file /usr/bin from install of hadoop-1.2.1-1.x86_64 conflicts with file from package filesystem-3.8-2.el8.x86_64

Sep 21, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 2,728 views
0 votes
1 answer

Urgently Want dataset

Sep 18, 2020 in Big Data Hadoop by Amit
 • 120 points • 1,795 views
0 votes
1 answer

How to merge two Spark DataFrames?

Sep 17, 2020 in Big Data Hadoop by akhtar
 • 38,260 points • 3,249 views
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