Arpit Agarwal created HDFS-6898:
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Summary: DN must reserve space for a full block when an RBW block
is created
Key: HDFS-6898
URL: https://issues.apache.org/jira/browse/HDFS-6898
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Affects Versions: 2.5.0
Reporter: Arpit Agarwal
Assignee: Arpit Agarwal
DN will successfully create two RBW blocks on the same volume even if the free
space is sufficient for just one full block.
One or both block writers may subsequently get a DiskOutOfSpace exception. This
can be avoided by allocating space up front.
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