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https://issues.apache.org/jira/browse/HDDS-12206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ethan Rose reassigned HDDS-12206:
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Assignee: Rishabh Patel
> Create an `ozone debug` command to run checks on all replicas
> -------------------------------------------------------------
>
> Key: HDDS-12206
> URL: https://issues.apache.org/jira/browse/HDDS-12206
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Ethan Rose
> Assignee: Rishabh Patel
> Priority: Major
>
> Add a command that can be used to check the state of all replicas in a
> portion of the namespace. For example, something like {{ozone debug replicas
> verify <URI>... [--checksums] [--metadata] [--padding]}} where:
> * {{ozone debug replicas verify}} does one iteration through the namespace
> provided in {{{}<URI>{}}}. It may use multiple threads to work through all
> the keys.
> * For each key under {{{}<URI>{}}}, the client does checks on all the
> replicas based on the flags provided. At least one flag is required.
> * Client uses the block info to checks on the replicas as specified by the
> flags:
> ** {{{}--checksums{}}}: Download data from the datanode to do client side
> checksum verification. Replaces the {{read-replicas}} commad.
> ** {{{}--padding{}}}: Check for EC missing padding. Replaces the
> {{find-missing-padding}} command and is a no-op for non-EC keys.
> ** {{{}--metadata{}}}: Only check block existence by {{GetBlock}} calls to
> the datanodes without downloading data.
> More flags can be added as we come up with new checks that would be good to
> have. The command should output results in json format grouped by key and the
> results of the checks run. It may optionally omit results from keys with no
> issues.
> This would replace other {{ozone debug}} tools like {{find-missing-padding}}
> and {{read-replicas.}}
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