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Posted to hdfs-dev@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2009/09/20 22:56:16 UTC
[jira] Created: (HDFS-636) SafeMode should count only complete
blocks.
SafeMode should count only complete blocks.
-------------------------------------------
Key: HDFS-636
URL: https://issues.apache.org/jira/browse/HDFS-636
Project: Hadoop HDFS
Issue Type: Sub-task
Components: name-node
Affects Versions: Append Branch
Reporter: Konstantin Shvachko
Assignee: Konstantin Shvachko
Fix For: Append Branch
During start up the name-node is in safe mode and is counting blocks reported by data-nodes. When the number of minimally replicated blocks reaches the configured threshold the name-node leaves safe mode. Currently all blocks are counted towards the threshold including the ones that are under construction. The under-construction blocks should be excluded from the count, because they need to be recovered, which may take long time (lease expires in 1 hour by default). Also the recovery may result in deleting those blocks so counting them in the blocks total is incorrect.
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[jira] Resolved: (HDFS-636) SafeMode should count only complete
blocks.
Posted by "Konstantin Shvachko (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Konstantin Shvachko resolved HDFS-636.
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Resolution: Fixed
I just committed this.
> SafeMode should count only complete blocks.
> -------------------------------------------
>
> Key: HDFS-636
> URL: https://issues.apache.org/jira/browse/HDFS-636
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Affects Versions: Append Branch
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Fix For: Append Branch
>
> Attachments: completeBlockTotal.patch
>
>
> During start up the name-node is in safe mode and is counting blocks reported by data-nodes. When the number of minimally replicated blocks reaches the configured threshold the name-node leaves safe mode. Currently all blocks are counted towards the threshold including the ones that are under construction. The under-construction blocks should be excluded from the count, because they need to be recovered, which may take long time (lease expires in 1 hour by default). Also the recovery may result in deleting those blocks so counting them in the blocks total is incorrect.
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