Add support to io.Streaming API for sending Streams
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Key: CASSANDRA-579
URL: https://issues.apache.org/jira/browse/CASSANDRA-579
Project: Cassandra
Issue Type: Improvement
Reporter: Stu Hood
Priority: Minor
Fix For: 0.9
The io.Streaming API currently requires a file on disk to stream, which means
that bootstrap and repairs need to perform an anti-compaction that writes a
bunch of data to disk, only to have it be deleted after the streaming has
finished.
Ideally, the Streaming API should allow for streaming from an InputStream (or
any other class we think we need to design to make the streaming as efficient
as possible). That way, anti-compaction for repair/bootstrap does not perform
any writing: it simply streams the relevant portion of the file to the neighbor.
Additionally, this opens up interesting possibilities, such as providing the
Streaming API as a (Java only?) client API. One use case would be for a Hadoop
OutputFormat: rather than writing BinaryMemtables, the OutputFormat could
literally write an SSTable to the stream. This might require better integration
with gossip, to ensure that you aren't writing to the completely wrong node.
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