Rajesh Balamohan created TEZ-2791:
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Summary: Reduce tez.runtime.shuffle.fetch.buffer.percent default
value to avoid corner case OOMs
Key: TEZ-2791
URL: https://issues.apache.org/jira/browse/TEZ-2791
Project: Apache Tez
Issue Type: Bug
Reporter: Rajesh Balamohan
Default value for tez.runtime.shuffle.fetch.buffer.percent is set to 0.9. In
corner cases & based on scheduling & data sizes, it is possible that JVM
crosses old-gen threshold and ends up throwing OOM. It would be better to set
the default value to 0.6.
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