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https://issues.apache.org/jira/browse/HADOOP-5342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christian Kunz updated HADOOP-5342:
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Summary: DataNodes do not start up because InconsistentFSStateException on
just part of the disks in use (was: DataNodes do not start up when a previous
version has not been cleaned up)
> DataNodes do not start up because InconsistentFSStateException on just part
> of the disks in use
> -----------------------------------------------------------------------------------------------
>
> Key: HADOOP-5342
> URL: https://issues.apache.org/jira/browse/HADOOP-5342
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.18.2
> Reporter: Christian Kunz
> Priority: Blocker
>
> After restarting a cluster (including rebooting) the dfs got corrupted
> because many DataNodes did not start up, running into the following exception:
> 2009-02-26 22:33:53,774 ERROR org.apache.hadoop.dfs.DataNode:
> org.apache.hadoop.dfs.InconsistentFSStateException: Directory xxx is in an
> inconsistent state: version file in current directory is missing.
> at
> org.apache.hadoop.dfs.Storage$StorageDirectory.analyzeStorage(Storage.java:326)
> at
> org.apache.hadoop.dfs.DataStorage.recoverTransitionRead(DataStorage.java:105)
> at org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java:306)
> at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:223)
> at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java:3030)
> at
> org.apache.hadoop.dfs.DataNode.instantiateDataNode(DataNode.java:2985)
> at org.apache.hadoop.dfs.DataNode.createDataNode(DataNode.java:2993)
> at org.apache.hadoop.dfs.DataNode.main(DataNode.java:3115)
> This happens when using multiple disks with at least one previously marked as
> read-only, such that the storage version became out-dated, but after reboot
> it was mounted read-write, resulting in the DataNode not starting because of
> out-dated version.
> This is a big headache. If a DataNode has multiple disks of which at least
> one has the correct storage version then out-dated versions should not bring
> down the DataNode.
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