On 21 April 2017 at 10:34, frede...@ofb.net wrote: | Hi Mikko, | | I was bitten by this recently and I think some of the replies are | missing the point. As I understand it, the problem consists of these | elements: | | 1. When R starts, it creates a directory like /tmp/RtmpVIeFj4 | | 2. Right after R starts I can create files in this directory with no | error | | 3. After some hours or days I can no longer create files in this | directory, because it has been deleted
Nope. That is local to your system. Witness eg at my workstation: /tmp$ ls -ltGd Rtmp* drwx------ 3 edd 4096 Apr 21 16:12 Rtmp9K6bSN drwx------ 3 edd 4096 Apr 21 11:48 RtmpRRbaMP drwx------ 3 edd 4096 Apr 21 11:28 RtmpFlguFy drwx------ 3 edd 4096 Apr 20 13:06 RtmpWJDF3U drwx------ 3 edd 4096 Apr 18 15:58 RtmpY7ZIS1 drwx------ 3 edd 4096 Apr 18 12:12 Rtmpzr9W0v drwx------ 2 edd 4096 Apr 16 16:02 RtmpeD27El drwx------ 2 edd 4096 Apr 16 15:57 Rtmp572FHk drwx------ 3 edd 4096 Apr 13 11:08 RtmpqP0JSf drwx------ 3 edd 4096 Apr 10 18:47 RtmpzRzyFb drwx------ 3 edd 4096 Apr 6 15:21 RtmpQhvAUb drwx------ 3 edd 4096 Apr 6 11:24 Rtmp2lFKPz drwx------ 3 edd 4096 Apr 5 20:57 RtmprCeWUS drwx------ 2 edd 4096 Apr 3 15:12 Rtmp8xviDl drwx------ 3 edd 4096 Mar 30 16:50 Rtmp8w9n5h drwx------ 3 edd 4096 Mar 28 11:33 RtmpjAg6iY drwx------ 2 edd 4096 Mar 28 09:26 RtmpYHSgZG drwx------ 2 edd 4096 Mar 27 11:21 Rtmp0gSV4e drwx------ 2 edd 4096 Mar 27 11:21 RtmpOnneiY drwx------ 2 edd 4096 Mar 27 11:17 RtmpIWeiTJ drwx------ 3 edd 4096 Mar 22 08:51 RtmpJkVsSJ drwx------ 3 edd 4096 Mar 21 10:33 Rtmp9a5KxL /tmp$ Clearly still there after a month. I tend to have some longer-running R sessions in either Emacs/ESS or RStudio. So what I wrote in my last message here *clearly* applies to you: a local issue for which you have to take local action as R cannot know. You also have a choice of setting variables to affect this. | If R expected the directory to be deleted at random, and if we expect | users to call dir.create every time they access tempdir, then why did | R create the directory for us at the beginning of the session? That's | just setting people up to get weird bugs, which only appear in | difficult-to-reproduce situations (i.e. after the session has been | open for a long time). I disagree. R has been doing this many years, possibly two decades. | I think before we dismiss this we should think about possible in-R | solutions and why they are not feasible. Are there any packages which | would break if a call to 'tempdir' automatically recreated this | directory? (Or would it be too much of a performance hit to have | 'tempdir' check and even just issue a warning when the directory is | found not to exist?) Should we have a timer which periodically updates | the modification time of tempdir()? What do other long-running | programs do (e.g. screen, emacs)? There are options you have right now. Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
