[
https://issues.apache.org/jira/browse/HDFS-345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Harsh J resolved HDFS-345.
--------------------------
Resolution: Implemented
This is pretty close to the HDFS HA mechanism available in current versions.
Resolving as 'Implemented'.
> DataNode to send block reports to multiple namenodes?
> -----------------------------------------------------
>
> Key: HDFS-345
> URL: https://issues.apache.org/jira/browse/HDFS-345
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Marco Nicosia
> Priority: Minor
>
> I have this theory that I could test the memory footprint of a new version of
> the Hadoop namenode, without interrupting a running instance. We could shut
> down the secondary namenode process, and run a new version of the namenode
> code on the image file found on the secondary namenode server.
> But just running on the image file wouldn't be enough. It'd be great if I
> could get a real feel by having all the block reports also make their way to
> my fake namenode.
> Would it be possible for datanodes to report to two different namenodes, even
> if only one is the "active, live" namenode? (I understand that this wouldn't
> work if the format of the block report, or worse, the rpc layer, were
> incompatible.)
--
This message was sent by Atlassian JIRA
(v6.1.5#6160)
