NameNode should validate fsimage before rolling
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Key: HDFS-1481
URL: https://issues.apache.org/jira/browse/HDFS-1481
Project: Hadoop HDFS
Issue Type: Improvement
Components: name-node
Affects Versions: 0.22.0
Reporter: Hairong Kuang
Assignee: Hairong Kuang
Fix For: 0.22.0
We had an incident that the fsimage at secondary NameNode was truncated but got
uploaded to the primary NameNode. The primary NameNode simply rolled the image
without checking its integrity, therefore causing the fsimage to corrupt. The
primary NameNode should check the new image's integrity before rolling fsimage.
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