El contenido no se encuentra disponible en el idioma seleccionado. Estamos trabajando continuamente para agregar más idiomas. Gracias por su apoyo.

Compute
Elastic Cloud Server
Huawei Cloud Flexus
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Cloud Phone Host
Huawei Cloud EulerOS
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
VPC Endpoint
Cloud Connect
Enterprise Router
Enterprise Switch
Global Accelerator
Management & Governance
Cloud Eye
Identity and Access Management
Cloud Trace Service
Resource Formation Service
Tag Management Service
Log Tank Service
Config
OneAccess
Resource Access Manager
Simple Message Notification
Application Performance Management
Application Operations Management
Organizations
Optimization Advisor
IAM Identity Center
Cloud Operations Center
Resource Governance Center
Migration
Server Migration Service
Object Storage Migration Service
Cloud Data Migration
Migration Center
Cloud Ecosystem
KooGallery
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP Filing
Support Plans
My Credentials
Customer Operation Capabilities
Partner Support Plans
Professional Services
Analytics
MapReduce Service
Data Lake Insight
CloudTable Service
Cloud Search Service
Data Lake Visualization
Data Ingestion Service
GaussDB(DWS)
DataArts Studio
Data Lake Factory
DataArts Lake Formation
IoT
IoT Device Access
Others
Product Pricing Details
System Permissions
Console Quick Start
Common FAQs
Instructions for Associating with a HUAWEI CLOUD Partner
Message Center
Security & Compliance
Security Technologies and Applications
Web Application Firewall
Host Security Service
Cloud Firewall
SecMaster
Anti-DDoS Service
Data Encryption Workshop
Database Security Service
Cloud Bastion Host
Data Security Center
Cloud Certificate Manager
Edge Security
Managed Threat Detection
Blockchain
Blockchain Service
Web3 Node Engine Service
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
Storage
Object Storage Service
Elastic Volume Service
Cloud Backup and Recovery
Storage Disaster Recovery Service
Scalable File Service Turbo
Scalable File Service
Volume Backup Service
Cloud Server Backup Service
Data Express Service
Dedicated Distributed Storage Service
Containers
Cloud Container Engine
SoftWare Repository for Container
Application Service Mesh
Ubiquitous Cloud Native Service
Cloud Container Instance
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GeminiDB
GaussDB
Distributed Database Middleware
Database and Application Migration UGO
TaurusDB
Middleware
Distributed Cache Service
API Gateway
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
Multi-Site High Availability Service
EventGrid
Dedicated Cloud
Dedicated Computing Cluster
Business Applications
Workspace
ROMA Connect
Message & SMS
Domain Name Service
Edge Data Center Management
Meeting
AI
Face Recognition Service
Graph Engine Service
Content Moderation
Image Recognition
Optical Character Recognition
ModelArts
ImageSearch
Conversational Bot Service
Speech Interaction Service
Huawei HiLens
Video Intelligent Analysis Service
Developer Tools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Content Delivery & Edge Computing
Content Delivery Network
Intelligent EdgeFabric
CloudPond
Intelligent EdgeCloud
Solutions
SAP Cloud
High Performance Computing
Developer Services
ServiceStage
CodeArts
CodeArts PerfTest
CodeArts Req
CodeArts Pipeline
CodeArts Build
CodeArts Deploy
CodeArts Artifact
CodeArts TestPlan
CodeArts Check
CodeArts Repo
Cloud Application Engine
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive
On this page

Show all

HDFS Shell Command Introduce

Updated on 2024-08-10 GMT+08:00

HDFS Shell

You can use the Hadoop Distributed File System (HDFS) Shell command to perform operations on the HDFS, such as reading and writing files.

To run the HDFS Shell:

Go to the directory of HDFS client and enter the command. An example is shown as follows:

cd /opt/client/HDFS/hadoop/bin

hdfs dfs -mkdir /tmp/input

You can run the following command to seek help about HDFS commands:

hdfs --help

For details about the shell, see

http://hadoop.apache.org/docs/r3.1.1/hadoop-project-dist/hadoop-common/FileSystemShell.html

Table 1 Transparent encryption-related commands

Scenario

Operation

Command

Description

hadoop shell command management key

Create keys.

hadoop key create <keyname> [-cipher <cipher>] [-size <size>] [-description <description>] [-attr <attribute=value>] [-provider <provider>] [-help]

The create subcommand creates a key for the name specified by the <keyname> argument within the provider specified by the -provider argument. You may specify a cipher with the -cipher argument. The default cipher is "AES/CTR/NoPadding" currently.

The default keysize is 128. You may specify the requested key length using the -size argument. Arbitrary attribute=value style attributes may be specified using the -attr argument. The -attr may be specified for multiple times, once per attribute.

Rollback

hadoop key roll <keyname> [-provider <provider>] [-help]

The roll subcommand creates a new version for the specified key within the provider indicated using the -provider argument.

Delete keys

hadoop key delete <keyname> [-provider <provider>] [-f] [-help]

The delete subcommand deletes all versions of the key specified by the <keyname> argument within the provider specified by the -provider argument. The command asks for user confirmation unless -f is specified.

View keys

hadoop key list [-provider <provider>] [-metadata] [-help]

The list subcommand displays the keynames contained in a particular provider as configured in core-site.xml or specified with the -provider argument. The -metadata argument displays the metadata.

Table 2 Shell commands of Colocation client

Operation

Command

Description

Group creation

hdfs colocationadmin -createGroup -groupId

<groupID> -locatorIds <comma separated locatorIDs> or -file <path of the file contains all of locatorIDs>

Used to create a group. In the command, groupID is the group name and locatorID is the locator name. You can enter comma-separated locator IDs using command lines. You can also write locator IDs into a file so that the system can obtain the locator IDs by reading the file.

Group deletion

hdfs colocationadmin -deleteGroup <groupID>

Used to delete the specified group.

Group query

hdfs colocationadmin -queryGroup <groupID>

Used to query details about a specified group, including locators in the group and information about each locator and its corresponding DataNode.

Viewing all groups

hdfs colocationadmin -listGroups

Used to list all groups and their creation time.

Setting ACL permissions on Colocation directories

hdfs colocationadmin -setAcl

Used to set ACL permissions on Colocation directories in ZooKeeper.

The default root directory of Colocation in ZooKeeper is /hadoop/colocationDetails.

Utilizamos cookies para mejorar nuestro sitio y tu experiencia. Al continuar navegando en nuestro sitio, tú aceptas nuestra política de cookies. Descubre más

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback