Ethan Rose created HDDS-13091:
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Summary: Improve default configurations for container and volume
scan windows and intervals
Key: HDDS-13091
URL: https://issues.apache.org/jira/browse/HDDS-13091
Project: Apache Ozone
Issue Type: Sub-task
Reporter: Ethan Rose
If using a time-based sliding window to determine volume failure, a few configs
need to be set accordingly:
* Minimum scan gap between repeated volume scans.
** This is currently set to 15 minutes, which is probably too high given that
volume scans are cheap.
* The interval that the background volume scanner runs
** This is currently set to 1 hour.
* The bandwidth of the container data scanner
** This affects the rate at which it can scan containers.
** Each unhealthy container will trigger an on-demand volume scan.
** This is currently set to 5mb/sec which means we can expect one container
scan result every 17 minutes.
* The number of failed checks over a fixed time interval that is required to
fail a volume.
** This number must be set such that volume scans triggered either by the
background volume scanner or unhealthy containers from the container scanner
have a chance to mark the volume as failed.
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