The scheduler now spawns a seperate merge thread

Merges are now executed from a seperate thread within the scheduler that
wakes up via condition variables when new merge tasks are scheduled. In
addition, tombstone limits are now enforced by the scheduler, with new
merges being scheduled as needed.

There are still a few tests failing, notably the zero tombstones in the
last run invarient is not holding under tiering with tombstones. Need
to look into that yet.

1 files changed, 5 insertions, 0 deletions

diff --git a/include/framework/DynamicExtension.h b/include/framework/DynamicExtension.h
index 08e2243..6965965 100644
--- a/include/framework/DynamicExtension.h
+++ b/include/framework/DynamicExtension.h
@@ -301,5 +301,10 @@ private:
         return processed_records;
     }
 };
+
+template <RecordInterface R, ShardInterface S, QueryInterface Q, LayoutPolicy L=LayoutPolicy::TEIRING, DeletePolicy D=DeletePolicy::TAGGING>
+static void de_merge_callback(DynamicExtension<R, S, Q, L, D> extension, ExtensionStructure<R, S, Q> new_version) {
+
+}
 }