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From "Blake Eggleston (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-8452) Add missing systems to FBUtilities.isUnix, add FBUtilities.isWindows
Date Fri, 12 Dec 2014 00:47:13 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-8452?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Blake Eggleston updated CASSANDRA-8452:
---------------------------------------
    Attachment: CASSANDRA-8452-v3.patch

Well I'm glad you brought up procfs, since it turns out osx doesn't have one. The rest of
the posix systems we're checking for do [according to wikipedia | http://en.wikipedia.org/wiki/Procfs].
I guess adding hasProcFS would make some sense, just for the sake of being correct. At the
moment, it only affects whether some warnings are logged. Basically we eagerly try to open
a proc file, and use isPosix to see if we should log anything if that fails. Relying on isPosix
alone causes erroneous startup warnings in mac dev environments. 

I would think isWindows is enough for ntfs specific logic. Linux _can_ mount and write to
ntfs disks, but I'm don't know how common it is for C* to be using it, outside of maybe some
dual boot dev environments. I also not as clear if it would have the same behaviors we're
coding around with isWindows. It's written against a spec that was reverse engineered from
the Windows implementation.

> Add missing systems to FBUtilities.isUnix, add FBUtilities.isWindows
> --------------------------------------------------------------------
>
>                 Key: CASSANDRA-8452
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8452
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Blake Eggleston
>            Assignee: Blake Eggleston
>            Priority: Minor
>             Fix For: 2.1.3
>
>         Attachments: CASSANDRA-8452-v2.patch, CASSANDRA-8452-v3.patch, CASSANDRA-8452.patch
>
>
> The isUnix method leaves out a few unix systems, which, after the changes in CASSANDRA-8136,
causes some unexpected behavior during shutdown. It would also be clearer if FBUtilities had
an isWindows method for branching into Windows specific logic.



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