Hung Tran created GOBBLIN-780:
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Summary: Handle scenarios that causes the YarnAutoScalingManager
to be stuck
Key: GOBBLIN-780
URL: https://issues.apache.org/jira/browse/GOBBLIN-780
Project: Apache Gobblin
Issue Type: Task
Reporter: Hung Tran
Issue 1: The YarnAutoScalingRunnable is run in a fixed schedule by a
ScheduledExecutorService in YarnAutoScalingManager. If the runnable encounters
an exception the the executor service will stop scheduling it. Catch all
exceptions in the runnable, log, and do not re-raise.
Issue 2: The auto scaler may reduce the container count to 0. Helix will not
schedule any flows if there are no participants connected. This results in the
auto scaler keeping the container count at 0 and no progress is made. Fix this
by not allowing the container count to be reduced below 1.
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