Recent questions tagged big-data

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Checksum verification in Hadoop.

Oct 15, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 1,420 views
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How to start Hadoop daemons?

Oct 15, 2020 in Big Data Hadoop by MD
 • 95,440 points • 646 views
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Enable HA for ranger KMS.

Oct 15, 2020 in Big Data Hadoop by anonymous
 • 450 points • 533 views
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HA ranger KMS ,

Oct 15, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 591 views
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How to store datasets from Pig to HDFS?

Oct 15, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 1,499 views
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1 answer

How to load dataset in Pig?

Oct 14, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 832 views
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Execute the Pig script in Local mode.

Oct 14, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 334 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 • 1,372 views
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mkdir: cannot create directory `/var/run/hadoop': Permission denied.

Oct 14, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 2,841 views
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1 answer

How to create an empty file in Hadoop?

Oct 13, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 12,468 views
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How to remove the directory from HDFS?

Oct 13, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 3,731 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
 • 38,230 points • 2,212 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
 • 38,230 points • 1,964 views
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How to check the name of the hadoop server?

Oct 13, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 1,951 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 • 722 views
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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 • 1,284 views
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Ranger kms create key failed

Oct 5, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 1,441 views
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How to view contents of file in hadoop hdfs?

Oct 5, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 7,521 views
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How to find HDFS free space from command line?

Oct 5, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 554 views
0 votes
1 answer

Where does Hive store files in HDFS?

Oct 5, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 708 views
+1 vote
1 answer

How to check a HDFS directory size?

Oct 5, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 568 views
0 votes
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How to change the default replication factor in Hadoop?

Oct 3, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 1,502 views
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How to change default block size in Hadoop Cluster?

Oct 3, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 2,004 views
0 votes
1 answer

Change the owner and group of a file in Hadoop.

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 7,658 views
0 votes
1 answer

Change permissions of a file in HDFS.

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 2,071 views
0 votes
1 answer

How to create a group in Hadoop?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 938 views
0 votes
1 answer

How to append files from local system to HDFS?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 7,294 views
0 votes
1 answer

How to set replication factor in Hadoop?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 7,347 views
0 votes
1 answer

How to merge files in Hadoop?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 874 views
0 votes
1 answer

How to remove files from HDFS system?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 22,491 views
0 votes
1 answer

Copy files in different folders in Hadoop.

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 31,714 views
0 votes
1 answer

How to copy files from HDFS to local system?

Oct 1, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 3,911 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 • 1,682 views
0 votes
1 answer

Ranger KMS - Curl command

Sep 28, 2020 in Apache Spark by Shilpa S
 • 450 points • 1,095 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
 • 38,230 points • 688 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
 • 38,230 points • 704 views
0 votes
1 answer

How to change block size in Hadoop dynamically?

Sep 25, 2020 in Big Data Hadoop by MD
 • 95,440 points • 2,558 views
0 votes
1 answer

How to configure Hadoop Client?

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 2,307 views
0 votes
1 answer

How to upload files in Hadoop Cluster?

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 1,834 views
0 votes
1 answer

Usage: java FsShell [-put <localsrc> ... <dst>]

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 588 views
0 votes
1 answer

How to connect Hadoop WebUI?

Sep 25, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 570 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
 • 38,230 points • 2,801 views
0 votes
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Enable HA for mapreduce jobhistory server

Sep 23, 2020 in Big Data Hadoop by Shilpa S
 • 450 points • 1,052 views
0 votes
1 answer

How to insert data into Cassandra table using Spark DataFrame?

Sep 21, 2020 in Apache Spark by akhtar
 • 38,230 points • 3,471 views
0 votes
1 answer

How to format a Hadoop Master Node?

Sep 21, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 522 views
0 votes
1 answer

How to start Hadoop namenode service?

Sep 21, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 752 views
0 votes
1 answer

How to configure Hadoop namenode?

Sep 21, 2020 in Big Data Hadoop by MD
 • 95,440 points • 670 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
 • 38,230 points • 1,113 views
0 votes
1 answer

Urgently Want dataset

Sep 18, 2020 in Big Data Hadoop by Amit
 • 120 points • 568 views
0 votes
1 answer

How to merge two Spark DataFrames?

Sep 17, 2020 in Big Data Hadoop by akhtar
 • 38,230 points • 1,265 views
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