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https://issues.apache.org/jira/browse/HDDS-6364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-6364:
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Labels: pull-request-available (was: )
> EC: Discard pre-allocated blocks to eliminate worthless retries.
> ----------------------------------------------------------------
>
> Key: HDDS-6364
> URL: https://issues.apache.org/jira/browse/HDDS-6364
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Mark Gui
> Assignee: Mark Gui
> Priority: Major
> Labels: pull-request-available
>
> When we meet failures during a stripe write, we'll rewrite the stripe into a
> new block group, this new block group should be from a different pipeline
> with some different DNs to ensure that we have a good chance to succeed at
> the next retry.
> But there are pre-allocated block groups when we create a new EC key, for a
> large EC key there will be at most 64 pre-allocated
> blocks(ozone.key.preallocation.max.blocks = 64, by default), and we've only
> got 10 retries(ozone.client.max.ec.stripe.write.retries = 10) for EC stripe
> write, so the pre-allocated blocks came from the same pipeline as the failed
> block group should be discarded to prevent worthless retries.
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