Todd Lipcon created HADOOP-9898:
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Summary: Set SO_KEEPALIVE on all our sockets
Key: HADOOP-9898
URL: https://issues.apache.org/jira/browse/HADOOP-9898
Project: Hadoop Common
Issue Type: Bug
Components: ipc, net
Affects Versions: 3.0.0
Reporter: Todd Lipcon
Priority: Minor
We recently saw an issue where network issues between slaves and the NN caused
ESTABLISHED TCP connections to pile up and leak on the NN side. It looks like
the RST packets were getting dropped, which meant that the client thought the
connections were closed, while they hung open forever on the server.
Setting the SO_KEEPALIVE option on our sockets would prevent this kind of leak
from going unchecked.
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