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https://issues.apache.org/jira/browse/HDFS-6088?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karthik Kambatla updated HDFS-6088:
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Target Version/s: 2.6.0 (was: 2.5.0)
> Add configurable maximum block count for datanode
> -------------------------------------------------
>
> Key: HDFS-6088
> URL: https://issues.apache.org/jira/browse/HDFS-6088
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Kihwal Lee
>
> Currently datanode resources are protected by the free space check and the
> balancer. But datanodes can run out of memory simply storing too many
> blocks. If the sizes of blocks are small, datanodes will appear to have
> plenty of space to put more blocks.
> I propose adding a configurable max block count to datanode. Since datanodes
> can have different heap configurations, it will make sense to make it
> datanode-level, rather than something enforced by namenode.
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