Ethan Rose created HDDS-12713:
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             Summary: Add progress indicator for replica verification
                 Key: HDDS-12713
                 URL: https://issues.apache.org/jira/browse/HDDS-12713
             Project: Apache Ozone
          Issue Type: Sub-task
            Reporter: Ethan Rose


When replica verification is run to only print failed replicas, it will be 
difficult to gauge how much progress it is making since most replicas will be 
healthy. Add a counter that gets periodically printed to stderr indicating how 
many keys have currently been verified.

We may want to have this printed every X seconds, where X can be configured 
with a CLI flag.

Freon has a 
[ProgressBar|https://github.com/apache/ozone/blob/83fd8d7a31ca3e0b0c98a4dc7beb3c4e5aa5769d/hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/freon/ProgressBar.java#L31]
 but that requires knowing a max value ahead of time, so we may not be able to 
use it.



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