Use DecoratedKey objects in Memtable, SSTableReader/Writer objects
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Key: CASSANDRA-446
URL: https://issues.apache.org/jira/browse/CASSANDRA-446
Project: Cassandra
Issue Type: Improvement
Reporter: Jonathan Ellis
See CASSANDRA-420 for introduction of DecoratedKey.
IMO we should move Memtable and SSTR objects to using DK objects, too. This
will help Memtable flushes similar to how this helps BMt, and using DK objects
in SSTR will avoid a ton of potential confusion about whether a String is a key
or a decorated key.
As a side benefit, moving the decoration operation out of memtable flush and
into the insert path will help make better use of multicore systems, since we
can have multiple write threads but only one core can flush at a time. (See
CASSANDRA-445.)
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