[HDFS-11785] Backport HDFS-9902 to branch-2.7: Support different values of dfs.datanode.du.reserved per storage type

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Component/s: datanode
• Target Version/s: 2.7.4
• Hadoop Flags: Reviewed

Release Note

Reserved space can be configured independently for different storage types for clusters with heterogeneous storage. The 'dfs.datanode.du.reserved' property name can be suffixed with a storage types (i.e. one of ssd, disk, archival or ram_disk). e.g. reserved space for RAM_DISK storage can be configured using the property 'dfs.datanode.du.reserved.ram_disk'. If specific storage type reservation is not configured then the value specified by 'dfs.datanode.du.reserved' will be used for all volumes.

• Assignee: Brahma Reddy Battula
• Reporter: Brahma Reddy Battula
• Created: 09/May/17 18:51
• Updated: 28/Jul/17 01:32
• Resolved: 11/May/17 06:00

Description

As per discussussion in mailling list backport HDFS-9902 to branch-2.7

Issue Links

• is related to: HDFS-9902 Support different values of dfs.datanode.du.reserved per storage type