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- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- EMR on CVM Operation Guide
- Planning Cluster
- Configuring Cluster
- Managing Cluster
- Instance Information
- Node Specification Management
- Checking and Updating Public IP
- Logging in to Clusters
- Cluster Scale-Out
- Cluster Scale-in
- Releasing Now
- Auto Scaling
- Graceful Scale-In
- Changing Configurations
- Automatic Replacement
- Exporting Software Configuration
- Cluster Scripts
- Cluster Termination
- Operation Logs
- Task Center
- Disk Management
- Managing Service
- Monitoring and Alarms
- Cluster Overview
- Node Status
- Service Status
- Cluster Event
- Log
- Application Analysis
- Cluster Inspection
- Java Analysis
- Monitoring Metrics
- Node Monitoring Metrics
- HDFS Monitoring Metrics
- YARN Monitoring Metrics
- ZooKeeper Monitoring Metrics
- HBase Monitoring Metrics
- Hive Monitoring Metrics
- Spark Monitoring Metrics
- Presto Monitoring Metrics
- Trino Monitoring Metrics
- ClickHouse Monitoring Metrics
- Druid Monitoring Metrics
- Kudu Monitoring Metrics
- Alluxio Monitoring Metrics
- PrestoSQL Monitoring Metrics
- Impala Monitoring Metrics
- Ranger Monitoring Metrics
- COSRanger Monitoring Metrics
- Doris Monitoring Metrics
- Kylin Monitoring Metrics
- Zeppelin Monitoring Metrics
- Oozie Monitoring Metrics
- Storm Monitoring Metrics
- Livy Monitoring Metrics
- Kyuubi Monitoring Metrics
- StarRocks Monitoring Metrics
- Kafka Monitoring Metrics
- Alarm Configurations
- Alarm Records
- EMR on TKE Operation Guide
- EMR Serverless HBase Operation Guide
- EMR Development Guide
- Hadoop Development Guide
- HDFS Common Operations
- HDFS Federation Management Development Guide
- HDFS Federation Management
- Submitting MapReduce Tasks
- Automatically Adding Task Nodes Without Assigning ApplicationMasters
- YARN Task Queue Management
- Practices on YARN Label Scheduling
- Hadoop Practical Tutorial
- Using API to Analyze Data in HDFS and COS
- Dumping YARN Job Logs to COS
- Spark Development Guide
- Hbase Development Guide
- Phoenix on Hbase Development Guide
- Hive Development Guide
- Presto Development Guide
- Sqoop Development Guide
- Hue Development Guide
- Oozie Development Guide
- Flume Development Guide
- Kerberos Development Guide
- Knox Development Guide
- Alluxio Development Guide
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- Livy Development Guide
- Kyuubi Development Guide
- Zeppelin Development Guide
- Hudi Development Guide
- Superset Development Guide
- Impala Development Guide
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Mounting File System to Unified Alluxio File System
Last updated: 2025-01-03 14:56:32
Background
Alluxio provides a unified namespace mechanism that allows other file systems to be mounted to the file system of Alluxio. In addition, it allows upper-layer applications to use the unified namespace to access data scattered across different systems.
Mounting COS
Sample: Mounting a COS bucket to an Alluxio directory
bin/alluxio fs mount --option fs.cos.access.key=<COS_SECRET_ID> \\--option fs.cos.secret.key=<COS_SECRET_KEY> \\--option fs.cos.region=<COS_REGION> \\--option fs.cos.app.id=<COS_APP_ID> \\/cos cos://<COS_BUCKET>/
Configure the COS information in each
--option.Configuration Item | Description |
fs.cos.access.key | The COS secret ID |
fs.cos.secret.key | The COS secret key |
fs.cos.region | The COS region name, such as ap-beijing |
fs.cos.app.id | Your AppID |
COS_BUCKET | The COS bucket name without the AppID suffix |
This command mounts the COS directory specified by
cos://bucket/xxx to the /cos directory in Alluxio.Mounting HDFS
Sample: Mounting an HDFS directory to an Alluxio directory
`bin/alluxio fs mount /hdfs hdfs://data`
This command mounts the
/data directory of HDFS to the /hdfs subdirectory of Alluxio.
After the mount is successful, the mounted content can be viewed by running the alluxio fs ls command.Mounting CHDFS
Sample: Mounting CHDFS to Alluxio through
mountNote
This is supported only for EMR 2.5.0 or later + Alluxio 2.3.0 or later.
alluxio fs mount \\--option alluxio.underfs.hdfs.configuration=/usr/local/service/hadoop/etc/hadoop/core-site.xml \\/chdfs ofs://f4modr7kmvw-wMqw.chdfs.ap-chongqing.myqcloud.com
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