Erik Krogen created HADOOP-16013:
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Summary: DecayRpcScheduler decay thread should run as a daemon
Key: HADOOP-16013
URL: https://issues.apache.org/jira/browse/HADOOP-16013
Project: Hadoop Common
Issue Type: Bug
Components: ipc
Affects Versions: 3.3.0
Reporter: Erik Krogen
Assignee: Erik Krogen
{{DecayRpcScheduler}} sets up a {{Timer}} to schedule a decay of the weights it
tracks:
{code}
// Setup delay timer
Timer timer = new Timer();
DecayTask task = new DecayTask(this, timer);
timer.scheduleAtFixedRate(task, decayPeriodMillis, decayPeriodMillis);
{code}
However this Timer is not set up as a daemon thread. I have seen this cause my
JVM to refuse to exit when running, for example, NNThroughputBenchmark with
FairCallQueue enabled.
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