[jira] [Assigned] (HDDS-6259) EC: Small keys under 1 chunk should tolerate more than parity nodes being unavailable

["Stephen O'Donnell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDDS-6259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stephen O'Donnell reassigned HDDS-6259:
---------------------------------------

    Assignee: Stephen O'Donnell

> EC: Small keys under 1 chunk should tolerate more than parity nodes being unavailable
> -------------------------------------------------------------------------------------
>
>                 Key: HDDS-6259
>                 URL: https://issues.apache.org/jira/browse/HDDS-6259
>             Project: Apache Ozone
>          Issue Type: Sub-task
>            Reporter: Stephen O'Donnell
>            Assignee: Stephen O'Donnell
>            Priority: Major
>
> With a small key less than 1 chunk, if the replica with index 1 is up, but more than parity_num other replicas are not available, attempting to read the key gives an insufficient datanode errors. Ideally, as index_1 is present, and the keyLength is less than 1 chunk, the data should be readable.
> A similar scenario for a key less than 1 chunk, is that indexes 1, 2, 3 and 4 OR 5 are down. As we know 2 and 3 are only zeros, and we have a single parity, we should be able to reconstruct this, but again it fails with an insufficient datanodes error.



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