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From: Scott Fines <Scott.Fines@nisc.coop>
To: "user@cassandra.apache.org" <user@cassandra.apache.org>
Subject: RE: MapReduce with two ethernet cards
Thread-Topic: MapReduce with two ethernet cards
Thread-Index: AcyHa+DHRakrhzKBTPSEdOM2tJJG+gAMBkqAAIm+snE=
Date: Thu, 13 Oct 2011 16:13:03 +0000
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I upgraded to cassandra 0.8.7, and the problem persists.=0A=
=0A=
Scott=0A=
________________________________________=0A=
From: Brandon Williams [driftx@gmail.com]=0A=
Sent: Monday, October 10, 2011 12:28 PM=0A=
To: user@cassandra.apache.org=0A=
Subject: Re: MapReduce with two ethernet cards=0A=
=0A=
On Mon, Oct 10, 2011 at 11:47 AM, Scott Fines <Scott.Fines@nisc.coop> wrote=
:=0A=
> Hi all,=0A=
> This may be a silly question, but I'm at a bit of a loss, and was hoping =
for=0A=
> some help.=0A=
> I have a Cassandra cluster set up with two NICs--one for internel=0A=
> communication between cassandra machines (10.1.1.*), and one to respond t=
o=0A=
> Thrift RPC (172.28.*.*).=0A=
> I also have a Hadoop cluster set up, which, for unrelated reasons, has to=
=0A=
> remain separate from Cassandra, so I've written a little MapReduce job to=
=0A=
> copy data from Cassandra to Hadoop. However, when I try to run my job, I=
=0A=
> get=0A=
> java.io.IOException: failed connecting to all endpoints=0A=
> 10.1.1.24,10.1.1.17,10.1.1.16=0A=
> which is puzzling to me. It seems like the MR is attempting to connect to=
=0A=
> the internal communication IPs instead of the external Thrift IPs. Since =
I=0A=
> set up a firewall to block external access to the internal IPs of Cassand=
ra,=0A=
> this is obviously going to fail.=0A=
> So my question is: why does Cassandra MR seem to be grabbing the=0A=
> listen_address instead of the Thrift one. Presuming it's not a funky=0A=
> configuration error or something on my part, is that strictly necessary? =
All=0A=
> told, I'd prefer if it was connecting to the Thrift IPs, but if it can't,=
=0A=
> should I open up port 7000 or port 9160 between Hadoop and Cassandra?=0A=
> Thanks for your help,=0A=
> Scott=0A=
=0A=
Your cassandra is old, upgrade to the latest version.=0A=
=0A=
-Brandon=0A=