kanaka kumar avvaru created HDFS-8626:
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Summary: Reserved RBW space is not released if creation of RBW
File fails
Key: HDFS-8626
URL: https://issues.apache.org/jira/browse/HDFS-8626
Project: Hadoop HDFS
Issue Type: Bug
Reporter: kanaka kumar avvaru
Assignee: kanaka kumar avvaru
Priority: Critical
The DataNode reserves disk space for a full block when creating an RBW block
and will release the space when the block is finalized (introduced in
HDFS-6898)
But if the RBW file creation fails, the reserved space is not released back.
In a scenario, when the data node disk is full it causes no space left
IOException. Eventually even if the disk got cleaned, the reserved space is
not release until the Data Node is restarted
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