Alexander Pivovarov created HIVE-10657:
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Summary: Remove copyBytes operation from MD5 UDF
Key: HIVE-10657
URL: https://issues.apache.org/jira/browse/HIVE-10657
Project: Hive
Issue Type: Improvement
Components: UDF
Reporter: Alexander Pivovarov
Assignee: Alexander Pivovarov
Priority: Minor
Current implementation uses Apache Commons DigestUtils.md5Hex method to get
md5 hex.
DigestUtils does not provide md5Hex method with signature (byte[], start,
length). This is why copyBytes method was added to get bytes[] from
BytesWritable.
To avoid copying bytes from BytesWritable to new byte array we can use java
MessageDigest API directly.
MessageDigest has method update(byte[], start, length)
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