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https://issues.apache.org/jira/browse/HDFS-11769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16009532#comment-16009532
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Nandakumar commented on HDFS-11769:
-----------------------------------
{{VolumeManager#createVolume}} throws
{{KSMException(FAILED_VOLUME_ALREADY_EXISTS)}} when volume already exists,
since the throw statement is within try cache block and KSMException extends
IOException, {{catch (IOException | DBException ex)}} will catch the exception
again and throw a new {{KSMException(FAILED_INTERNAL_ERROR)}}. So even in case
of VOLUME_ALREADY_EXISTS we will get INTERNAL_ERROR.
> Ozone: KSM: Add createVolume API
> --------------------------------
>
> Key: HDFS-11769
> URL: https://issues.apache.org/jira/browse/HDFS-11769
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Affects Versions: HDFS-7240
> Reporter: Anu Engineer
> Assignee: Mukul Kumar Singh
> Attachments: HDFS-11769-HDFS-7240.001.patch,
> HDFS-11769-HDFS-7240.002.patch
>
>
> Add createVolume API in KSM.
> createVolume API allows administrators to create a volume. The arguments to
> the API are:
> * Admin Name - The name of the administrator who is creating this volume.
> Volumes can be created only by administrators.
> * User Name - The name of the owner of this volume.
> * Quota - Quota information for this volume.
> This JIRA proposes to add the protobuf layer for createVolume and handling in
> KSM. We will file a followup JIRA for the KSM client.
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