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Akira AJISAKA commented on HDFS-7770: ------------------------------------- Thanks [~xyao] for updating the patch. LGTM, +1. bq. I think we can address that in a separate JIRA. Agree, let's create a jira for this. > Need document for storage type label of data node storage locations under > dfs.data.dir > -------------------------------------------------------------------------------------- > > Key: HDFS-7770 > URL: https://issues.apache.org/jira/browse/HDFS-7770 > Project: Hadoop HDFS > Issue Type: Improvement > Components: documentation > Affects Versions: 2.6.0 > Reporter: Xiaoyu Yao > Assignee: Xiaoyu Yao > Attachments: HDFS-7700.01.patch, HDFS-7770.00.patch, > HDFS-7770.02.patch > > > HDFS-2832 enables support for heterogeneous storages in HDFS, which allows DN > as a collection of storages with different types. However, I can't find > document on how to label different storage types from the following two > documents. I found the information from the design spec. It will be good we > document this for admins and users to use the related Archival storage and > storage policy features. > http://hadoop.apache.org/docs/r2.6.0/hadoop-project-dist/hadoop-hdfs/ArchivalStorage.html > http://hadoop.apache.org/docs/r2.6.0/hadoop-project-dist/hadoop-hdfs/hdfs-default.xml > This JIRA is opened to add document for the new storage type labels. > 1. Add an example under ArchivalStorage.html#Configuration section: > {code} > <property> > <name>dfs.data.dir</name> > <value>[DISK]file:///hddata/dn/disk0, > [SSD]file:///hddata/dn/ssd0,[ARCHIVE]file:///hddata/dn/archive0</value> > </property> > {code} > 2. Add a short description of [DISK/SSD/ARCHIVE/RAM_DISK] options in > hdfs-default.xml#dfs.data.dir and document DISK as storage type if no storage > type is labeled in the data node storage location configuration. -- This message was sent by Atlassian JIRA (v6.3.4#6332)