Mariappan Asokan created HIVE-8347:
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Summary: Use base-64 encoding instead of custom encoding for
serialized objects
Key: HIVE-8347
URL: https://issues.apache.org/jira/browse/HIVE-8347
Project: Hive
Issue Type: Improvement
Components: HCatalog
Affects Versions: 0.13.1
Reporter: Mariappan Asokan
Serialized objects that are shipped via Hadoop {{Configuration}} are encoded
using custom encoding (see {{HCatUtil.encodeBytes()}} and its complement
{{HCatUtil.decodeBytes()}}) which has 100% overhead. In other words, each byte
in the serialized object becomes 2 bytes after encoding. Perhaps, this might
be one of the reasons for the problem reported in HIVE-453. The patch for
HIVE-453 compressed serialized {{InputJobInfo}} objects to solve the problem.
By using Base64 encoding, the overhead will be reduced to about 33%. This will
alleviate the problem for all serialized objects.
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