Server maxIdleTime is way too low
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Key: HADOOP-7949
URL: https://issues.apache.org/jira/browse/HADOOP-7949
Project: Hadoop Common
Issue Type: Bug
Components: ipc
Affects Versions: 1.0.0, 0.23.0, 0.22.0, 0.21.0
Reporter: Eli Collins
Assignee: Eli Collins
HADOOP-2909 intended to set the server max idle time for a connection to twice
the client value. ("The server-side max idle time should be greater than the
client-side max idle time, for example, twice of the client-side max idle
time.") This way when a server times out a connection it's due a crashed client
and not an inactive client so we don't close client connections with
outstanding requests (by setting 2x the client value on the server side the
client should time out the connection first).
Looks like there was a typo in the patch and it set the default value to 1/5th
the client value, instead of the intended 2x.
{noformat}
hadoop2 (pre-HADOOP-4687)$ git reset --hard 6fa4597e
hadoop2 (pre-HADOOP-4687)$ grep -r ipc.client.connection.maxidletime .
./src/core/org/apache/hadoop/ipc/Client.java:
conf.getInt("ipc.client.connection.maxidletime", 10000); //10s
./src/core/org/apache/hadoop/ipc/Server.java: this.maxIdleTime =
2*conf.getInt("ipc.client.connection.maxidletime", 1000);
{noformat}
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