Acceleration : Iceberg table compaction [iceberg]

common/src/main/scala/org/apache/comet/CometConf.scala

@@ -148,6 +148,18 @@ object CometConf extends ShimCometConf {
       .booleanConf
       .createWithDefault(false)
 
+  val COMET_ICEBERG_COMPACTION_ENABLED: ConfigEntry[Boolean] =
+    conf("spark.comet.iceberg.compaction.enabled")
+      .category(CATEGORY_EXEC)
+      .doc(
+        "Whether to enable Comet-accelerated Iceberg compaction. When enabled, " +
+          "CALL rewrite_data_files() is intercepted and executed via Comet's native " +
+          "Rust/DataFusion engine for direct Parquet read/write, bypassing Spark's " +
+          "DAG execution. Only bin-pack strategy is supported; sort and z-order " +
+          "fall back to Spark's default. Requires Iceberg on the classpath. Experimental.")
+      .booleanConf
+      .createWithDefault(false)
+
   val COMET_ICEBERG_DATA_FILE_CONCURRENCY_LIMIT: ConfigEntry[Int] =
     conf("spark.comet.scan.icebergNative.dataFileConcurrencyLimit")
       .category(CATEGORY_SCAN)

native/core/Cargo.toml

@@ -79,6 +79,7 @@ object_store_opendal = {version = "0.55.0", optional = true}
 hdfs-sys = {version = "0.3", optional = true, features = ["hdfs_3_3"]}
 opendal = { version ="0.55.0", optional = true, features = ["services-hdfs"] }
 iceberg = { workspace = true }
+serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 uuid = "1.21.0"