Adar Dembo created KUDU-1978:
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Summary: When deleting misaligned blocks, log block manager may
corrupt data
Key: KUDU-1978
URL: https://issues.apache.org/jira/browse/KUDU-1978
Project: Kudu
Issue Type: Bug
Components: fs
Affects Versions: 1.1.0
Reporter: Adar Dembo
Assignee: Adar Dembo
Priority: Critical
When faced with repeated sequences of misaligned blocks, the LBM may corrupt
one while deleting its neighbor. This is due to the aligning behavior in the
hole punching code: aligning up to the nearest filesystem block boundary is
incorrect behavior if the following block is misaligned.
Note: misaligned blocks in the LBM are incredibly rare. To see them, you must
have been victimized by KUDU-1793. Repeated sequences of misaligned blocks are
even rarer; I'm not even sure if they're possible.
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