Pan Yuxuan created HDFS-9902:
--------------------------------
Summary: dfs.datanode.du.reserved should be difference between
StorageType DISK and RAM_DISK
Key: HDFS-9902
URL: https://issues.apache.org/jira/browse/HDFS-9902
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Affects Versions: 2.7.2
Reporter: Pan Yuxuan
Now Hadoop support different storage type for DISK, SSD, ARCHIVE and RAM_DISK,
but they share one configuration dfs.datanode.du.reserved.
The DISK size may be several TB and the RAM_DISK size may be only several tens
of GB.
The problem is that when I configure DISK and RAM_DISK (tmpfs) in the same DN,
and I set dfs.datanode.du.reserved values 10GB, this will waste a lot of
RAM_DISK size.
Since the usage of RAM_DISK can be 100%, so I don't want
dfs.datanode.du.reserved configured for DISK impacts the usage of tmpfs.
So can we make a new configuration for RAM_DISK or just skip this configuration
for RAM_DISK?
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
