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https://issues.apache.org/jira/browse/HDFS-2108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE updated HDFS-2108:
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Attachment: h2108_20110802.patch
Hi Suresh, thanks for the comments.
h2108_20110802.patch: see below.
1, 3, 4.
done.
2. Why have heartbeatManager in BlockManager. Why not just DatanodeManager to
removeDataNode, stop and start decommission etc.?
Renamed BlockManager.removeDatanode(..) to removeBlocksAssociatedTo(..)
and moved decommission related methods to DatanodeManager.
> As much as possible, we should avoid getting HeartbeatManager from the
> DatanodeManager.
Added an interface DatanodeStatistics so that HeartbeatManager can be changed
from public to package private.
> Move datanode heartbeat handling to BlockManager
> ------------------------------------------------
>
> Key: HDFS-2108
> URL: https://issues.apache.org/jira/browse/HDFS-2108
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h2108_20110727.patch, h2108_20110727b.patch,
> h2108_20110801.patch, h2108_20110802.patch
>
>
> Logically, datanodes should heartbeat to block manager instead of name
> system. Therefore, we should move datanode heartbeat handling code to
> {{BlockManager}}.
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