I'm getting told off for using the deprecated option: io.bytes.per.checksum
https://issues.apache.org/jira/browse/HADOOP-13636 Except: I'm not. FileSystem.getServerDefaults() is, which is used by Trash to work out where to delete things. It strikes me that the system is inconsitent: HdfsConfiguration is deprecating a property that everything else is happy to use; I see it in four places in production, and various tests, plus core-default.xml Is it really deprecated? If so, are there any volunteers to remove it from the codebase, while pulling up the default value into core-default? otherwise: how about the complaint is turned off?