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https://issues.apache.org/jira/browse/HADOOP-3732?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi updated HADOOP-3732:
---------------------------------
Resolution: Fixed
Release Note:
Delay intialization of datanode block verification till the verification thread
is started.
Status: Resolved (was: Patch Available)
I just committed this.
> Block scanner should read block information during initialization.
> ------------------------------------------------------------------
>
> Key: HADOOP-3732
> URL: https://issues.apache.org/jira/browse/HADOOP-3732
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.17.0
> Reporter: Konstantin Shvachko
> Assignee: Raghu Angadi
> Priority: Blocker
> Fix For: 0.19.0
>
> Attachments: HADOOP-3732.patch, HADOOP-3732.patch
>
>
> We see a lot of warning messages on each data-node during startup and
> upgrading from 0.17 to 0.18 saying:
> {code}
> 2008-07-08 22:22:15,711 WARN org.apache.hadoop.dfs.DataNode: Block
> /grid/3/hadoop/var/hdfs/data/current/blk_3359714082706415785 does not have a
> metafile!
> {code}
> The message received twice for each block, because the block information is
> first read buy the data-node itself and then by the block scanner.
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