[
https://issues.apache.org/jira/browse/HDFS-2941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13237374#comment-13237374
]
Todd Lipcon commented on HDFS-2941:
-----------------------------------
- Rather than using INVALID_TXID as the URL parameter, I think it makes more
sense to use a string like "latest". Right now there's some ambiguity if we had
a bug elsewhere that accidentally passed INVALID_TXID.
- Rather than adding a new validateStorageInfo parameter, can you just skip
validation when no storage info is specified?
- Right now there's no way of knowing the txid of the downloaded image. I think
the best solution is to add a header like:
{code}
Content-Disposition: attachment; filename=fsimage_000000012345
{code}
this would allow the HTTP endpoint to be used from a browser or a tool like
wget with the correct results. You'd then have to change the argument of the
fetchImage tool to specify a target directory instead, but I think that's
reasonable.
> Add an administrative command to download a copy of the fsimage from the NN
> ---------------------------------------------------------------------------
>
> Key: HDFS-2941
> URL: https://issues.apache.org/jira/browse/HDFS-2941
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: hdfs client, name-node
> Affects Versions: 0.24.0
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
> Attachments: HDFS-2941.patch
>
>
> It would be nice to be able to download a copy of the fsimage from the NN,
> e.g. for backup purposes.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
