Checksums for Namenode image files
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Key: HADOOP-2114
URL: https://issues.apache.org/jira/browse/HADOOP-2114
Project: Hadoop
Issue Type: Improvement
Reporter: Raghu Angadi
Currently DFS can write multiple copies of image files but we do not
automatically recover from corrupted or truncated image files well. This jira
intends to keep CRC for image file records and Namenode should recover accurate
image as long as data exists in one of the copies (e.g. it should be ok to have
non overlapping corruptions in the copies). Will add more details in next
comment.
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