Raphael S. Carvalho 637f3bfa50 db: refresh row cache's underlying data source after compaction ...

Underlying data source in row cache holds a reference to sstable set
prior to compaction which isn't released until a memtable flush, which
means file descriptors of deleted sstables remains opened, wasting
disk space.
The fix is to refresh underlying data source in row cache.

Fixes #2570.

Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>

2017-07-24 15:49:11 -03:00

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