Yifan Cai created CASSANDRA-15410:
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Summary: Avoid over-allocation of bytes for UTF8 string
serialization
Key: CASSANDRA-15410
URL: https://issues.apache.org/jira/browse/CASSANDRA-15410
Project: Cassandra
Issue Type: Improvement
Components: Messaging/Client
Reporter: Yifan Cai
In the current message encoding implementation, it first calculates the
`encodeSize` and allocates the bytebuffer with that size.
However, during encoding, it assumes the worst case of writing UTF8 string to
allocate bytes, i.e. assuming each letter takes 3 bytes.
The over-estimation further leads to resizing the underlying array and data
copy.
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