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From: Esteban Gutierrez <esteban@cloudera.com>
Date: Tue, 19 May 2015 21:37:02 -0700
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Subject: Re: HBase failing to restart in single-user mode
To: "user@hbase.apache.org" <user@hbase.apache.org>
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The randomshit is generated per user. /var/folders has multiple
subdirectories and each one contains subdirs of the users. Also there are
some rules under /etc/defaults/periodic.conf and
/etc/periodic/daily/110.clean-tmps that define how frequently the tmp
directories are cleaned so its rare people change that on Mac OS X but
thats something to consider.

I tried to reproduce Benoit's issue few times following the same steps and
changing TMPDIR and no luck, perhaps there is something else in Benoit's
environment.

esteban.


--
Cloudera, Inc.


On Tue, May 19, 2015 at 9:03 PM, Nick Dimiduk <ndimiduk@gmail.com> wrote:

> On Tue, May 19, 2015 at 4:45 PM, tsuna <tsunanet@gmail.com> wrote:
>
> > On Tue, May 19, 2015 at 11:27 AM, Esteban Gutierrez
> > <esteban@cloudera.com> wrote:
> > > Something that works for me is to set manually
> > > -Djava.io.tmpdir=/User/esteban/tmp  in the jvm arguments, otherwise Mac
> > OS
> > > X will use /var/folders/c2/<some kind of hash>/T for TMPDIR causing all
> > > kind of weird issues. You could also set TMPDIR to point to another
> > > location but you will have to remember that all the time.
> >
> > How do we explain this?  What does ZK care whether it uses
> > /Users/foo/blah or /var/folders/c2/randomshit/T or anything else?
> >
>
> Is the randomshit a hash of the processID, for instance? I don't know what
> OSX is doing under the hood with this /tmp mapping. Hence I explicitly tell
> hbase to use "/tmp" instead of ${java.io.tmpdir}. I guess Esteban's
> -Djava.io.tmpdir override would achieve similar results.
>

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