Improve ByteStream by removing all synchronized method calls
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Key: HIVE-720
URL: https://issues.apache.org/jira/browse/HIVE-720
Project: Hadoop Hive
Issue Type: Improvement
Reporter: Zheng Shao
org.apache.hadoop.hive.serde2.ByteStream has 2 inner classes: Input and Output,
which inherits from ByteArrayInputStream and ByteArrayOutputStream.
Both these classes have a lot of sychronized methods, which make them really
slow.
We should let ByteStream.Input and ByteStream.Output directly inherit
InputStream and OutputStream so we don't need to call synchronized methods at
all. This will help LazySimpleSerDe, ColumnarSerDe as well as LazyBinarySerDe.
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