Rei Odaira created CASSANDRA-11973:
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Summary: Is MemoryUtil.getShort() supposed to return a
sign-extended or non-sign-extended value?
Key: CASSANDRA-11973
URL: https://issues.apache.org/jira/browse/CASSANDRA-11973
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Rei Odaira
Assignee: Rei Odaira
Priority: Minor
Fix For: 2.2.x, 3.0.x, 3.x
In org.apache.cassandra.utils.memory.MemoryUtil.getShort(), the returned value
of unsafe.getShort(address) is bit-wise-AND'ed with 0xffff, while that of
getShortByByte(address) is not. This inconsistency results in different
returned values when the short integer is negative. Which is preferred
behavior? Looking at NativeClustering and NativeCellTest, it seems like
non-sign-extension is assumed.
By the way, is there any reason MemoryUtil.getShort() and
MemoryUtil.getShortByByte() return "int", not "short"?
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