finish compaction

Signed-off-by: Alex Chi <iskyzh@gmail.com>

Cargo.lock

@@ -203,11 +203,10 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-channel"
-version = "0.5.6"
+version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2dd04ddaf88237dc3b8d8f9a3c1004b506b54b3313403944054d23c0870c521"
+checksum = "176dc175b78f56c0f321911d9c8eb2b77a78a4860b9c19db83835fea1a46649b"
 dependencies = [
- "cfg-if",
  "crossbeam-utils",
 ]
 
@@ -238,12 +237,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.14"
+version = "0.8.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fb766fa798726286dbbb842f174001dab8abc7b627a1dd86e0b7222a95d929f"
-dependencies = [
- "cfg-if",
-]
+checksum = "248e3bacc7dc6baa3b21e405ee045c3047101a49145e7e9eca583ab4c2ca5345"
 
 [[package]]
 name = "duct"
@@ -400,6 +396,7 @@ dependencies = [
  "arc-swap",
  "bytes",
  "clap",
+ "crossbeam-channel",
  "crossbeam-epoch",
  "crossbeam-skiplist",
  "moka",