[HDFS-8633] Fix setting of dfs.datanode.readahead.bytes in hdfs-default.xml to match DFSConfigKeys

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.8.0, 2.7.1, 3.0.0-alpha1
• Component/s: datanode
• Labels: newbie supportability
• Hadoop Flags: Reviewed
• Assignee: Ray Chiang
• Reporter: Ray Chiang
• Created: 18/Jun/15 14:58
• Updated: 06/Jan/17 01:53
• Resolved: 19/Jun/15 16:54

Description

Found this using the XML/Config verifier. One of these properties has two digits swapped.

XML Property: dfs.datanode.readahead.bytes
XML Value: 4193404
Config Name: DFS_DATANODE_READAHEAD_BYTES_DEFAULT
Config Value: 4194304

What is the intended value?

Issue Links

• is duplicated by: HDFS-9578 Incorrect default value (typo) in hdfs-default.xml