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https://issues.apache.org/jira/browse/HDDS-13994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18066403#comment-18066403
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Sergey Soldatov commented on HDDS-13994:
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I feel that if there is no space to properly manage the metadata that should be
addressed as soon as possible, but not masking it by RO state. Otherwise we
would run in a situation where DN's volume would just stuck because they are
unable to perform changes including clean ups.
> Open Datanode RocksDB in read-only mode if the disk is full
> -----------------------------------------------------------
>
> Key: HDDS-13994
> URL: https://issues.apache.org/jira/browse/HDDS-13994
> Project: Apache Ozone
> Issue Type: Sub-task
> Components: Ozone Datanode
> Reporter: Siddhant Sangwan
> Assignee: Siddhant Sangwan
> Priority: Major
> Labels: pull-request-available
>
> A Datanode's RocksDB partition can become completely full due to various
> reasons (for example if some other process writes to the disk). In this case
> the DB should be opened in read-only mode so read requests can be served.
> RocksDB won't open in read-write mode if the partition has no remaining space.
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