Block scanner should read block information during initialization.
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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: 0.18.0
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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