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https://issues.apache.org/jira/browse/HDFS-1975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron T. Myers updated HDFS-1975:
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Attachment: HDFS-1975-HDFS-1623.patch
Here's an updated version of the previous patch provided by Jitendra. It does
the following things:
# Rebased on current HDFS-1623 branch.
# Adds infrastructure to MiniDFSCluster to be able to start HA NNs.
# Adds a test based roughly on Todd's earlier test.
# Fixes up a few corner cases.
# Should address all of Todd's feedback.
Todd, could you please take a look at this? The one piece of feedback I didn't
take was changing sharedEditsDirs to sharedEditsUris, since doing so would be
inconsistent with all the other places in the code where we refer to those
collections as "dirs."
> HA: Support for sharing the namenode state from active to standby.
> ------------------------------------------------------------------
>
> Key: HDFS-1975
> URL: https://issues.apache.org/jira/browse/HDFS-1975
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Reporter: Suresh Srinivas
> Assignee: Jitendra Nath Pandey
> Attachments: HDFS-1975-HA.2.patch, HDFS-1975-HA.patch,
> HDFS-1975-HDFS-1623.patch, hdfs-1975.txt, hdfs-1975.txt
>
>
> To enable hot standby namenode, the standby node must have current
> information for - namenode state (image + edits) and block location
> information. This jira addresses keeping the namenode state current in the
> standby node. To do this, the proposed solution in this jira is to use a
> shared storage to store the namenode state.
> Note one could also build an alternative solution by augmenting the backup
> node. A seperate jira could explore this.
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