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From Jose Rozanec <jose.roza...@mercadolibre.com>
Subject Tez 0.8.3 on EMR hanging with Hive task
Date Wed, 15 Jun 2016 14:38:56 GMT
Hello,

We are experiencing some issues with Tez 0.8.3 when we issue heavy queries
from Hive. Seems some jobs hang on Tez and never return. Those jobs show up
in the DAG web-ui, but no progress is reported on UI nor on Hive logs. Any
ideas why this could happen? We detect happens with certain memory
configurations, which if missing, the job dies soon (we guess due to OOM).

Most probably not related to this, at some point we also got the following
error: "org.apache.tez.dag.api.SessionNotRunning: TezSession has already
shutdown. Application xxxxx failed 2 times due to AM Container". We are not
sure can be related to TEZ-2663
<https://issues.apache.org/jira/browse/TEZ-2663>, which should be solved
since version 0.7.1 onwards.

Thanks in advance,

Joze.

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