rackerlabs/otter — pull request #258 by dreid (2013-07-10 17:57:14+00:00)
Title: Auto 433 compact more frequently

This changes gc_grace_seconds to be 1 hour and sets the SizeTieredCompactionStrategy min_threshold to 2.

So compaction will take place when there are more than 2 sstables and tombstones older than 1 hour will be removed.

This also introduces a mechanism for dealing with explicit migrations.