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Hadoop >> mail # user >> fs cache giving me headaches


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Re: fs cache giving me headaches
On Tue, Aug 7, 2012 at 11:44 AM, Koert Kuipers <[EMAIL PROTECTED]> wrote:

> I do create new ugis, and i do not hand them off to threads. However i
> assumed that FileSystem.get(conf) would fetch from the filesystem cache
> based on the ugi (based on equality that is, not identity). So my
> assumption was that if different threads create ugis that are equal, they
> would fetch the same FileSystem from the cache. Is that wrong?
https://issues.apache.org/jira/browse/HADOOP-6670

Yes, UGIs are compared using identity, not value equality, for exactly this
purpose.

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Aaron T. Myers
Software Engineer, Cloudera