liuguanghua created HDFS-17741:
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Summary: The old blocks should be added into MarkedDeleteQueue
when create a file with overwrite
Key: HDFS-17741
URL: https://issues.apache.org/jira/browse/HDFS-17741
Project: Hadoop HDFS
Issue Type: Bug
Reporter: liuguanghua
When create a file with overwrite, the old blocks will not delete immediately
because these blocks not add into MarkedDeleteQueue.
This will have two consequences
（1）The block will delete when datanode block report comes.
(2) If the block is in the PendingReconstructionBlocks, it will be
timeouted after 300s.
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