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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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Todd Lipcon updated HDFS-1975:
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Attachment: HDFS-1975-HDFS-1623.patch
Before committing I ran the rest of the edit-log tests and discovered a couple
small issues. This patch has the following fixes:
- fix TestEditLog to init journals for write to fix failing test cases
- fix FSNamesystem to not use /tmp/hadoop-name as a default shared edits
directory (fixes a failing TestEditLog case)
- add shared edits dirs to hdfs-default.xml
- fix MiniDFSCluster to not fail if running HA tests on a clean build dir
(Files.deleteRecursively was failing if the dir didn't exist)
- remove empty diff in HAUtil
- rebase on new tip of branch
Since the above changes are pretty simple I'll commit under Eli's +1 tomorrow
morning .
> 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-HDFS-1623.patch,
> HDFS-1975-HDFS-1623.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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