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From: sriram <sriram.sub@gmail.com>
Date: Mon, 12 Aug 2013 23:28:05 -0700
Message-ID: 
 <CAAhqu8WY9fZ-Tw5oU8hC5kCYVBpe19vnOMGq82yiTyfVouWjRQ@mail.gmail.com>
Subject: Re: build/test failure
To: dev@samza.incubator.apache.org
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That is definitely the behavior that I am seeing. /etc/hosts looks fine.
Did you figure out how to fix it for all cases?


On Mon, Aug 12, 2013 at 11:17 PM, Chris Riccomini
<criccomini@linkedin.com>wrote:

> Hey Sriram,
>
> I have noticed that when I run my work laptop at home without VPN on, it
> resolves its hostname to a hostname of criccomi-mn. When I try and ping
> that address from the laptop, itself, I get a DNS resolution failure. If I
> log into VPN, I can then ping the host as expected.
>
> I discovered this issue while trying to run YARN locally on my laptop.
> When trying to click from the YARN RM site to the AM dashboard for a Samza
> job, the page would fail with some socket issue. I discovered that it was
> linking to criccomi-mn. Changing to localhost or 127.0.0.1 fixed the issue.
>
> I believe that the Samza AM and the JmxServer are likely using a similar
> method to resolve hostnames for the local machine (InetAddress). JmxServer
> does:
>
>     val hostname = InetAddress.getLocalHost.getHostName
>
> SamzaAppMaster uses:
>
>     val nodeHostString = System.getenv(ApplicationConstants.NM_HOST_ENV)
>
> I'm willing to bet (but haven't confirmed) that the YARN NM is using
> InetAddress as well, and handing that hostname to SamzaAppMaster via the
> environment variable. I wonder if this is the behavior you're seeing?
>
> Cheers,
> Chris
>
> P.S. Might be double checking /etc/hosts as well.
> ________________________________________
> From: sriram [sriram.sub@gmail.com]
> Sent: Monday, August 12, 2013 10:25 PM
> To: dev@samza.incubator.apache.org
> Subject: Re: build/test failure
>
> The errors are different though. In my case it is to do with my
> environment. This has been happening across projects so it is not specific
> to Samza.
>
>
> On Mon, Aug 12, 2013 at 9:50 PM, Tejas Patil <tejasp@apache.org> wrote:
>
> > I too faced problem while building it. But when I triggered the build
> again
> > on the same checkout, there were no failures and the build was
> successful.
> > It seems that there is some problem while building for the very first
> time.
> > Anyways, I have filed SAMZA-10 for this.
> >
> > https://issues.apache.org/jira/browse/SAMZA-10
> >
> >
> > On Mon, Aug 12, 2013 at 7:28 PM, Chris Riccomini <
> criccomini@linkedin.com
> > >wrote:
> >
> > > Hey Sriram,
> > >
> > > This sounds like a weird issue with your environment. Can you open the
> > > JIRA? Would be good to get a full stack trace as well.
> > >
> > > I know LI has some funky subnet issues. I'm wondering: are you running
> > > this over VPN? If so, it would be good to throw in a println, or debug,
> > or
> > > turn on test logging, so we can see what hostname is resolved to in
> > > JmxServer for this test.
> > >
> > > Anyway, I think a JIRA is in order. This shouldn't fail.
> > >
> > > Cheers,
> > > Chris
> > > ________________________________________
> > > From: Sriram [sriram.sub@gmail.com]
> > > Sent: Monday, August 12, 2013 7:04 PM
> > > To: dev@samza.incubator.apache.org
> > > Cc: dev@samza.incubator.apache.org
> > > Subject: Re: build/test failure
> > >
> > > I assumed this was an error during code import to open source. If not,
> we
> > > can go the JIRA route.
> > >
> > > On Aug 12, 2013, at 6:38 PM, Jakob Homan <jghoman@gmail.com> wrote:
> > >
> > > > Can you go ahead and open a JIRA?  Patches are good too. :)
> > > > -Jakob
> > > >
> > > >
> > > > On Mon, Aug 12, 2013 at 6:29 PM, sriram <sriram.sub@gmail.com>
> wrote:
> > > >
> > > >> I checked out the code from the open source git repo. When I tried
> > > building
> > > >> it, I get the error below (failed test) -
> > > >>
> > > >> org.apache.samza.metrics.TestJmxServer > serverStartsUp FAILED
> > > >>    java.net.UnknownHostException at TestJmxServer.scala:36
> > > >>        Caused by: java.net.UnknownHostException at
> > > TestJmxServer.scala:36
> > > >>
> > > >> 14 tests completed, 1 failed
> > > >> :samza-core_2.9.2:test FAILED
> > > >>
> > > >> FAILURE: Build failed with an exception.
> > > >>
> > >
> >
>

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