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Posted to hdfs-issues@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2012/09/25 23:38:07 UTC
[jira] [Created] (HDFS-3974) dfsadmin -metasave throws NPE when
under-replicated blocks are recently deleted
Todd Lipcon created HDFS-3974:
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Summary: dfsadmin -metasave throws NPE when under-replicated blocks are recently deleted
Key: HDFS-3974
URL: https://issues.apache.org/jira/browse/HDFS-3974
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 3.0.0
Reporter: Todd Lipcon
Priority: Minor
We currently have the following race:
- Block is underreplicated, hence it's present in neededReplications
- User deletes the block - its BlockInfo.blockCollection is set to null
- Admin runs metaSave before the replication monitor runs.
This causes an NPE since block.getBlockCollection() for one of the neededReplication blocks has become null.
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[jira] [Assigned] (HDFS-3974) dfsadmin -metasave throws NPE when
under-replicated blocks are recently deleted
Posted by "Andy Isaacson (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-3974?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Isaacson reassigned HDFS-3974:
-----------------------------------
Assignee: Andy Isaacson
> dfsadmin -metasave throws NPE when under-replicated blocks are recently deleted
> -------------------------------------------------------------------------------
>
> Key: HDFS-3974
> URL: https://issues.apache.org/jira/browse/HDFS-3974
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 3.0.0
> Reporter: Todd Lipcon
> Assignee: Andy Isaacson
> Priority: Minor
>
> We currently have the following race:
> - Block is underreplicated, hence it's present in neededReplications
> - User deletes the block - its BlockInfo.blockCollection is set to null
> - Admin runs metaSave before the replication monitor runs.
> This causes an NPE since block.getBlockCollection() for one of the neededReplication blocks has become null.
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