Steve Loughran created HADOOP-13293:
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Summary: add a special 0 byte input stream for empty blobs
Key: HADOOP-13293
URL: https://issues.apache.org/jira/browse/HADOOP-13293
Project: Hadoop Common
Issue Type: Sub-task
Components: fs/s3
Affects Versions: 2.8.0
Reporter: Steve Loughran
Priority: Minor
S3a (and the other object stores) have a lot of IO going on, even for 0 byte
files. They don't need to: that's a special case which can be handled locally.
A special ZeroByteInputStream class could handle this for all the object stores.
This isn't much of an optimization: code shouldn't normally need to go through
0 byte files, but we see evidence it does sometimes happen.
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