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From Bikas Saha <bi...@hortonworks.com>
Subject RE: General question about Tez shuffle
Date Fri, 19 Sep 2014 01:28:09 GMT
Tez uses the standard yarn shuffle service (per node) that comes packaged
with YARN.

-----Original Message-----
From: Andrew Or [mailto:andrewor14@gmail.com]
Sent: Thursday, September 18, 2014 5:25 PM
To: dev@tez.apache.org
Subject: General question about Tez shuffle

Hi all,

I have a general question of how Tez shuffle works on a yarn cluster.

I am familiar with how Yarn shuffle uses ShuffleHandler as an auxiliary
service of the node manager to serve spilled files. Does Tez use a similar
interface? I am running an HDP 2.1 cluster with Tez installed, and I noticed
that my "yarn.nodemanager.aux-services" does not include anything related to
Tez. Does Tez run its own HTTP server to serve these files? If so, are these
servers per-node or per-application?

Thanks a lot in advance,
Andrew

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