Have you git blamed to dig up the original JIRA conversation? I think that deprecation predates many of us, so you might not get much historical perspective from the mailing list.
I'm happy to lend a +1 though, since like you said, it doesn't seem like that config key is going anywhere. On Fri, Sep 23, 2016 at 1:52 AM, Steve Loughran <ste...@hortonworks.com> wrote: > I got silence from HDFS dev here, so I'm raising it on common dev. > > Why is HDFS tagging as deprecated " io.bytes.per.checksum ", given its an > option being set in core-default, and used by other filesystems? > > > >INFO Configuration.deprecation > >(Configuration.java:warnOnceIfDeprecated(1182)) > - io.bytes.per.checksum is deprecated. Instead, use dfs.bytes-per-checksum > > I don't see why it should be deprecated. If it isn't what HDFS likes, then > the code there could be smarter: look for the dfs value, and if not found > then grab the io.bytes one —warning the user. > > I will volunteer to write this code if I get a promise that someone agrees > with the premise and is willing to help nurture it in. > > Begin forwarded message: > > From: Steve Loughran <ste...@hortonworks.com<mailto:ste...@hortonworks.com > >> > Subject: HADOOP-13636 and io.bytes.per.checksum > Date: 21 September 2016 at 17:12:00 BST > To: "hdfs-dev@hadoop.apache.org<mailto:hdfs-dev@hadoop.apache.org>" < > hdfs-dev@hadoop.apache.org<mailto:hdfs-dev@hadoop.apache.org>> > > 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? > >
