Kihwal Lee created HDFS-3922:
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Summary: 0.22 and 0.23 namenode throws away blocks under
construction on restart
Key: HDFS-3922
URL: https://issues.apache.org/jira/browse/HDFS-3922
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 0.20.203.0, 0.22.1
Reporter: Kihwal Lee
Assignee: Kihwal Lee
Priority: Critical
Fix For: 0.22.1, 0.23.4
When reading edits on startup, namenode may throw away blocks under
construction. This is because the file inode is turned into a "under
construction" one, but nothing is done to the last block.
With append/hsync, this is not acceptable because it may drop sync'ed partial
blocks. In branch 2 and trunk, HDFS-1623 (HA) fixed this issue.
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