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https://issues.apache.org/jira/browse/HDFS-3224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe updated HDFS-3224:
-----------------------------
Attachment: HDFS-3224.patch
Re-submitting the patch with the multiple datanode per host warning removed per
the discussion with Suresh.
Eli, let me know if you're OK with the patch or if we need something further.
Thanks!
> Bug in check for DN re-registration with different storage ID
> -------------------------------------------------------------
>
> Key: HDFS-3224
> URL: https://issues.apache.org/jira/browse/HDFS-3224
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Eli Collins
> Assignee: Jason Lowe
> Priority: Minor
> Attachments: HDFS-3224.patch, HDFS-3224.patch, HDFS-3224.patch,
> HDFS-3224.patch
>
>
> DatanodeManager#registerDatanode checks the host to node map using an IP:port
> key, however the map is keyed on IP, so this check will always fail. It's
> performing the check to determine if a DN with the same IP and storage ID has
> already registered, and if so to remove this DN from the map and indicate
> that eg it's no longer hosting these blocks. This bug has been here forever.
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