Steve Loughran created HADOOP-14747:
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Summary: S3AInputStream to implement CanUnbuffer
Key: HADOOP-14747
URL: https://issues.apache.org/jira/browse/HADOOP-14747
Project: Hadoop Common
Issue Type: Sub-task
Components: fs/s3
Affects Versions: 2.8.1
Reporter: Steve Loughran
HBase relies on FileSystems implementing {{CanUnbuffer.unbuffer()}} to force
input streams to free up remote connections (HBASE-9393). This works for HDFS,
but not elsewhere.
S3A input stream can implement {{CanUnbuffer.unbuffer()}} by closing the input
stream and relying on lazy seek to reopen it on demand.
Needs
* Contract specification of unbuffer. As in "who added a new feature to
filesystems but forgot to mention what it should do?"
* Contract test for filesystems which declare their support.
* S3AInputStream to call {{closeStream()}} on a call to {{unbuffer()}}.
* Test case
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