David Mollitor created AVRO-4061:
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Summary: Use Default Value of 1 For UTF8 Hash
Key: AVRO-4061
URL: https://issues.apache.org/jira/browse/AVRO-4061
Project: Apache Avro
Issue Type: Improvement
Components: java
Affects Versions: 1.12.0
Reporter: David Mollitor
Assignee: David Mollitor
Fix For: 1.12.1, 1.13.0
{code:java}
int h = hash;
if (h == 0) {
byte[] bytes = this.bytes;
int length = this.length;
for (int i = 0; i < length; i++) {
h = h * 31 + bytes[i];
}
this.hash = h;
}
{code}
If this is an empty string, the value of "h" will always be zero, and therefore
will not be cached correctly. An empty string will try to re-calculate the hash
every time. Instead, make "h" default to 1 to avoid this condition.
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