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https://issues.apache.org/jira/browse/HDDS-12951?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uma Maheswara Rao G updated HDDS-12951:
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Summary: EC: Add a metric or log when readers falling back to
reconstructional reads in EC (was: EC: Add a log or metric when readers
falling back to reconstructional reads in EC)
> EC: Add a metric or log when readers falling back to reconstructional reads
> in EC
> ---------------------------------------------------------------------------------
>
> Key: HDDS-12951
> URL: https://issues.apache.org/jira/browse/HDDS-12951
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Uma Maheswara Rao G
> Priority: Major
>
> In EC reads, we will fall back to online reconstructional reads when there
> are failures in the happy path read ( no failures from any DN when reading).
> This involves decoding the failed stripes by reading parity replicas. Users
> may want to correlate whether the read overheads are due to online
> reconstruction or something else. So, it would be good to provide some
> metrics or logging to indicate the readers are switching to reconstructional
> reads.
> This JIRA analyzes those read paths and makes sure we have enough trace
> information to correlate.
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