Jason Lowe created TEZ-2872:
-------------------------------
Summary: Tez AM can be overwhelmed by
TezTaskUmbilicalProtocol.getTask responses
Key: TEZ-2872
URL: https://issues.apache.org/jira/browse/TEZ-2872
Project: Apache Tez
Issue Type: Bug
Reporter: Jason Lowe
When a large job runs on a large cluster with a large user payload then the AM
can end up hitting OOM conditions. For example, Pig-on-Tez can require a
significant user payload (approaching 1MB) for vertices, inputs, and outputs in
the DAG. This can cause the ContainerTask response to be rather large per
task, which can lead to a situation where the AM is generating output faster
than the network interface can process it. If there are enough containers
asking for tasks then this leads to an OOM condition.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
