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Posted to hdfs-dev@hadoop.apache.org by "Todd Lipcon (Created) (JIRA)" <ji...@apache.org> on 2012/01/19 20:42:41 UTC
[jira] [Created] (HDFS-2812) When becoming active, NN should treat
all leases as freshly renewed
When becoming active, NN should treat all leases as freshly renewed
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Key: HDFS-2812
URL: https://issues.apache.org/jira/browse/HDFS-2812
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ha, name-node
Affects Versions: HA branch (HDFS-1623)
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Priority: Critical
I haven't seen this yet in practice, but I think the following is a bug:
- Clients currently only renew leases to the active NN
- Leases are written into the log when created, but there is no record to renew them
- In Standby state, we don't check leases for expiration. But, when we fail over and start the lease monitor, since the leases haven't been renewed, they might end up getting incorrectly released.
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[jira] [Resolved] (HDFS-2812) When becoming active, NN should treat
all leases as freshly renewed
Posted by "Todd Lipcon (Resolved) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-2812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved HDFS-2812.
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Resolution: Fixed
Fix Version/s: HA branch (HDFS-1623)
Hadoop Flags: Reviewed
Committed to branch, thanks for review.
> When becoming active, NN should treat all leases as freshly renewed
> -------------------------------------------------------------------
>
> Key: HDFS-2812
> URL: https://issues.apache.org/jira/browse/HDFS-2812
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Critical
> Fix For: HA branch (HDFS-1623)
>
> Attachments: hdfs-2812.txt, hdfs-2812.txt
>
>
> I haven't seen this yet in practice, but I think the following is a bug:
> - Clients currently only renew leases to the active NN
> - Leases are written into the log when created, but there is no record to renew them
> - In Standby state, we don't check leases for expiration. But, when we fail over and start the lease monitor, since the leases haven't been renewed, they might end up getting incorrectly released.
--
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