Lehel Boér created NIFI-9434:
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Summary: Controller level bulletin when content repository
backpressure
Key: NIFI-9434
URL: https://issues.apache.org/jira/browse/NIFI-9434
Project: Apache NiFi
Issue Type: Improvement
Reporter: Lehel Boér
We see more and more users hitting the situation where NiFi seems stuck because
of the content repo back pressure mechanism that is set by default. We should
have a controller level bulletin to let the users know what is happening.
This usually happens when all repositories and OS data are using the same file
system and usage goes over 52%.
If nifi.content.repository.archive.max.usage.percentage is 50% (default value)
and nifi.content.repository.archive.backpressure.percentage is not set, the
effective value of nifi.content.repository.archive.backpressure.percentage will
be 52%.
This property is used to control the content repository disk usage percentage
at which backpressure is applied to the processes writing to the content
repository. Once this percentage is reached, the content repository will refuse
any additional writes. Writes will be refused until the archive delete process
has brought the content repository disk usage percentage below
nifi.content.repository.archive.max.usage.percentage.
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