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https://issues.apache.org/jira/browse/HDFS-47?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J resolved HDFS-47.
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Resolution: Not A Problem
This has gone stale. FWIW, haven't seen DNs go OOM on its own in recent years.
Probably a leak that was fixed?
Resolving as Not a Problem (anymore).
> dead datanodes because of OutOfMemoryError
> ------------------------------------------
>
> Key: HDFS-47
> URL: https://issues.apache.org/jira/browse/HDFS-47
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Christian Kunz
>
> We see more dead datanodes than in previous releases. The common exception is
> found in the out file:
> Exception in thread "org.apache.hadoop.dfs.DataBlockScanner@18166e5"
> java.lang.OutOfMemoryError: Java heap space
> Exception in thread "DataNode: [dfs.data.dir-value]"
> java.lang.OutOfMemoryError: Java heap space
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