Using HDFS
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Using HDFS
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Available in VPC
This guide explains how to use HDFS in Data Forest.
HDFS namespace
HDFS provided by Data Forest uses namespace, which is a logical name of HDFS, instead of using name node server information (host name, ports) to access HDFS.
The HDFS namespaces provided by Data Forest are "koya" and "tata".
# HDFS NAMESPACE : koya
hdfs://koya/<hdfs path>
# HDFS NAMESPACE : tata
hdfs://tata/<hdfs path>
Check namespace quota information
You can see the HDFS quota information set in each information in the account's details area.
- From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest > Account menus, in that order.
- Click the account area to view the account's details.
- nameQuota (number of files): number of files that can be used in HDFS namespace
- spaceQuota (capacity): capacity that can be used in a HDFS namespace
Change namespace quota settings
The following describes how to change the number of files and capacity in a namespace.
- From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest > Account menus, in that order.
- Select the account, and then click the [Change account settings] > [Change HDFS quota] button.
- Select the namespace you want to change, enter the number of files and file capacity to change to, and then click the [Change] button.
Upload files to HDFS using the HUE app
The following describes how to upload the files to HDFS using the Apache HUE app.
- Log in to the HUE app.
- Log in with the Data Forest account and password.
- Click the [Upload] button at the upper right corner of the page.
- Click the [Select Files] button.
- Upload files.
- When the file upload is complete, check if the list of files uploaded to HDFS appears.
Example : When the bank.csv file is uploaded as a sample
Download the HDFS file in the HUE app
The following describes how to download the HDFS files in the HUE app.
- Log in to the HUE app.
- Log in with the Data Forest account and password.
- Click [Files] in the left menu of the page.
- Select the files to download, and then click [Actions] > [Download].
Example : When the "bank.csv" file is selected
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