snapshotting doesn't handle runtime exceptions (like out of memory) well
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Key: ZOOKEEPER-714
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-714
Project: Zookeeper
Issue Type: Bug
Components: server
Affects Versions: 3.2.2
Reporter: Patrick Hunt
Fix For: 3.3.1
If an out of memory occurs during snapshotting we recover from the error,
however we should be more explict about the problem.
Currently we log a warning, really we should log a FATAL and exit. This would
force the server to restart (supervisor) and make it very clear to the user
there is a problem. In some cases users don't notice the OOM exception (we have
trouble noticing it sometimes ourselves) as it doesn't stand out on the logs.
Exiting would be more explicit. However since we'd like to remove sysexits due
to container issues it's not clear what we should do here in addition to making
this FATAL.
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