[Spark][4.0] Rename managed commit to coordinated commits (#3241)

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#### Which Delta project/connector is this regarding?
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- [x] Spark
- [ ] Standalone
- [ ] Flink
- [ ] Kernel
- [x] Other (RFC)

## Description

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- Describe why we need the change.
 
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Renames Managed Commit to Coordinated Commits and Commit Owner to Commit
Coordinator to better express the meaning of the feature. Configs, table
feature name, classes, functions, comments, file names, and directory
names have all been updated to reflect the new terminology.


## How was this patch tested?

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Existing tests should cover these changes.

## Does this PR introduce _any_ user-facing changes?

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Yes, the feature name and config names have changed.

Author: dhruvarya-db

build.sbt

@@ -401,7 +401,7 @@ lazy val spark = (project in file("spark"))
       "org.apache.spark" %% "spark-sql" % sparkVersion.value % "provided",
       "org.apache.spark" %% "spark-core" % sparkVersion.value % "provided",
       "org.apache.spark" %% "spark-catalyst" % sparkVersion.value % "provided",
-      // For DynamoDBCommitStore
+      // For DynamoDBCommitCoordinator
       "com.amazonaws" % "aws-java-sdk" % "1.12.262" % "provided",
 
       // Test deps

connectors/standalone/src/main/scala/io/delta/standalone/internal/OptimisticTransactionImpl.scala

@@ -527,7 +527,9 @@ private[internal] class OptimisticTransactionImpl(
   private def shouldCheckpoint(committedVersion: Long): Boolean = {
     val checkpointingEnabled =
       deltaLog.hadoopConf.getBoolean(StandaloneHadoopConf.CHECKPOINTING_ENABLED, true)
-    checkpointingEnabled && committedVersion != 0 && committedVersion % deltaLog.checkpointInterval == 0
+    checkpointingEnabled &&
+      committedVersion != 0 &&
+      committedVersion % deltaLog.checkpointInterval == 0
   }
 
   /** Returns the next attempt version given the last attempted version */

protocol_rfcs/README.md

@@ -20,7 +20,7 @@ Here is the history of all the RFCs propose/accepted/rejected since Feb 6, 2024,
 |:--------------|:---------------------------------------------------------------------------------------------------------------------------------|:----------------------------------------------|:---------------------------------------|
 | 2023-02-02    | [in-commit-timestamps.md](https://github.com/delta-io/delta/blob/master/protocol_rfcs/in-commit-timestamps.md)                   | https://github.com/delta-io/delta/issues/2532 | In-Commit Timestamps                   |
 | 2023-02-09    | [type-widening.md](https://github.com/delta-io/delta/blob/master/protocol_rfcs/type-widening.md)                                 | https://github.com/delta-io/delta/issues/2623 | Type Widening                          |
-| 2023-02-14    | [managed-commits.md](https://github.com/delta-io/delta/blob/master/protocol_rfcs/managed-commits.md)                             | https://github.com/delta-io/delta/issues/2598 | Managed Commits                        |
+| 2023-02-14    | [coordinated-commits.md](https://github.com/delta-io/delta/blob/master/protocol_rfcs/coordinated-commits.md)                             | https://github.com/delta-io/delta/issues/2598 | Coordinated Commits                        |
 | 2023-02-26    | [column-mapping-usage.tracking.md](https://github.com/delta-io/delta/blob/master/protocol_rfcs/column-mapping-usage-tracking.md) | https://github.com/delta-io/delta/issues/2682 | Column Mapping Usage Tracking          |
 | 2023-04-24    | [variant-type.md](https://github.com/delta-io/delta/blob/master/protocol_rfcs/variant-type.md)                                   | https://github.com/delta-io/delta/issues/2864 | Variant Data Type                      |
 | 2024-04-30    | [collated-string-type.md](https://github.com/delta-io/delta/blob/master/protocol_rfcs/collated-string-type.md)                   | https://github.com/delta-io/delta/issues/2894 | Collated String Type                   |

protocol_rfcs/managed-commits.md renamed to protocol_rfcs/coordinated-commits.md

@@ -14,24 +14,24 @@
  * limitations under the License.
  */
 
-package io.delta.dynamodbcommitstore;
+package io.delta.dynamodbcommitcoordinator;
 
-import org.apache.spark.sql.delta.managedcommit.AbstractMetadata;
-import org.apache.spark.sql.delta.managedcommit.UpdatedActions;
+import org.apache.spark.sql.delta.coordinatedcommits.AbstractMetadata;
+import org.apache.spark.sql.delta.coordinatedcommits.UpdatedActions;
 import org.apache.hadoop.fs.Path;
 
 import java.util.UUID;
 
-public class ManagedCommitUtils {
+public class CoordinatedCommitsUtils {
 
-    private ManagedCommitUtils() {}
+    private CoordinatedCommitsUtils() {}
 
     /** The subdirectory in which to store the unbackfilled commit files. */
     final static String COMMIT_SUBDIR = "_commits";
 
-    /** The configuration key for the managed commit owner. */
-    private static final String MANAGED_COMMIT_OWNER_CONF_KEY =
-            "delta.managedCommit.commitOwner-preview";
+    /** The configuration key for the coordinated commits owner. */
+    private static final String COORDINATED_COMMITS_COORDINATOR_CONF_KEY =
+            "delta.coordinatedCommits.commitCoordinator-preview";
 
     /**
      * Creates a new unbackfilled delta file path for the given commit version.
@@ -55,23 +55,23 @@ public static Path getBackfilledDeltaFilePath(
         return new Path(logPath, String.format("%020d.json", version));
     }
 
-    private static String getManagedCommitOwner(AbstractMetadata metadata) {
+    private static String getCoordinatedCommitsCoordinator(AbstractMetadata metadata) {
         return metadata
             .getConfiguration()
-            .get(MANAGED_COMMIT_OWNER_CONF_KEY)
+            .get(COORDINATED_COMMITS_COORDINATOR_CONF_KEY)
             .getOrElse(() -> "");
     }
 
     /**
-     * Returns true if the commit is a managed commit to filesystem conversion.
+     * Returns true if the commit is a coordinated commits to filesystem conversion.
      */
-    public static boolean isManagedCommitToFSConversion(
+    public static boolean isCoordinatedCommitsToFSConversion(
             Long commitVersion,
             UpdatedActions updatedActions) {
-        boolean oldMetadataHasManagedCommit =
-                !getManagedCommitOwner(updatedActions.getOldMetadata()).isEmpty();
-        boolean newMetadataHasManagedCommit =
-                !getManagedCommitOwner(updatedActions.getNewMetadata()).isEmpty();
-        return oldMetadataHasManagedCommit && !newMetadataHasManagedCommit && commitVersion > 0;
+        boolean oldMetadataHasCoordinatedCommits =
+                !getCoordinatedCommitsCoordinator(updatedActions.getOldMetadata()).isEmpty();
+        boolean newMetadataHasCoordinatedCommits =
+                !getCoordinatedCommitsCoordinator(updatedActions.getNewMetadata()).isEmpty();
+        return oldMetadataHasCoordinatedCommits && !newMetadataHasCoordinatedCommits && commitVersion > 0;
     }
 }