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https://issues.apache.org/jira/browse/HADOOP-993?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dhruba borthakur updated HADOOP-993:
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Attachment: noDatanodesInFsimage.patch
This patch removes storing datanode information in the HDFS image. The fsimage
version is bumped to -4. The new namenode is backward-compatible, i.e. it can
operate on an older-image.
It seems it will conflict with the HDFS-upgrade (hadoop-702) patch, so we will
not submit this patch till the upgrade patch is submitted. The code is for
code-review purposes only.
Review comments welcome.
> Namenode does not need to store any data node info persistently.
> ----------------------------------------------------------------
>
> Key: HADOOP-993
> URL: https://issues.apache.org/jira/browse/HADOOP-993
> Project: Hadoop
> Issue Type: Improvement
> Components: dfs
> Reporter: Raghu Angadi
> Assigned To: Sameer Paranjpye
> Attachments: noDatanodesInFsimage.patch
>
>
> Namenode does not need to serialize datanode info. It will map datanode to
> storageID when datanode register.
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