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https://issues.apache.org/jira/browse/HDFS-13295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nicolas Fraison updated HDFS-13295:
-----------------------------------
Assignee: Nicolas Fraison
Status: Patch Available (was: Open)
> Namenode doesn't leave safemode if dfs.namenode.safemode.replication.min set
> < dfs.namenode.replication.min
> -----------------------------------------------------------------------------------------------------------
>
> Key: HDFS-13295
> URL: https://issues.apache.org/jira/browse/HDFS-13295
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Environment: CDH 5.11 with HDFS-8716 backported.
> dfs.namenode.replication.min=2
> dfs.namenode.safemode.replication.min=1
>
> Reporter: Nicolas Fraison
> Assignee: Nicolas Fraison
> Priority: Major
> Attachments: HDFS-13295.patch
>
>
> When we set dfs.namenode.safemode.replication.min <
> dfs.namenode.replication.min from HDFS-8716 patch the number of replica for
> which it will increase the safe block count
> must be equal to dfs.namenode.safemode.replication.min in
> `FSNamesystem.incrementSafeBlockCount`
> When reading modification from edits, the replica number for new blocks is
> set at min(numNodes,
> dfs.namenode.replication.min) in BlockManager.completeBlock which is greater
> than dfs.namenode.safemode.replication.min.
> Due to that safe block count never reach number of available blocks and
> namenode doesn't leave automatically the safemode
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