Blake Eggleston created CASSANDRA-15373:
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Summary: validate value sizes in LegacyLayout
Key: CASSANDRA-15373
URL: https://issues.apache.org/jira/browse/CASSANDRA-15373
Project: Cassandra
Issue Type: Bug
Components: Legacy/Local Write-Read Paths
Reporter: Blake Eggleston
Assignee: Blake Eggleston
In 2.1, all values are serialized as variable length blobs, with a length
prefix, followed by the actual value, even with fixed width types like int32.
The 3.0 storage engine, on the other hand, omits the length prefix for fixed
width types. Since the length of fixed width types are not validated on the 3.0
write path, writing data for a fixed width type from an incorrectly sized byte
buffer will over or underflow the space allocated for it, corrupting the
remainder of that partition or indexed region from being read. This is not
discovered until we attempt to read the corrupted value. This patch updates
LegacyLayout to throw a marshal exception if it encounters an unexpected value
size for fixed size columns.
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