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https://issues.apache.org/jira/browse/HDFS-8547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kihwal Lee updated HDFS-8547:
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Description: HDFS-6898 added the feature to reserve space on datanode when
creating RBW replicas. We have noticed that nonDfsUsed increasing on some of
the datanodes. Heap dump of datanodes has revealed that {{reservedForRbw}} was
huge for each volume. There weren't many rbw blocks at that time, so datanode
must leaking it. (was: HDFS-6898 added the feature to reserve space on
datanode when creating RBW replicas. We have noticed that nonDfsUsed
increasing on some of the datanodes. Heap dump of datanodes has revealed that
{{reservedForRbw}} was huge (~90GB) for each volume. There weren't many rbw
blocks at that time, so datanode must leaking it.)
> The space reservation for RBW block is leaking
> ----------------------------------------------
>
> Key: HDFS-8547
> URL: https://issues.apache.org/jira/browse/HDFS-8547
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Kihwal Lee
> Priority: Critical
>
> HDFS-6898 added the feature to reserve space on datanode when creating RBW
> replicas. We have noticed that nonDfsUsed increasing on some of the
> datanodes. Heap dump of datanodes has revealed that {{reservedForRbw}} was
> huge for each volume. There weren't many rbw blocks at that time, so
> datanode must leaking it.
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