rishabhdaim commented on code in PR #1539:
URL: https://github.com/apache/jackrabbit-oak/pull/1539#discussion_r1651080682


##########
oak-run/src/main/java/org/apache/jackrabbit/oak/run/RevisionsCommand.java:
##########
@@ -69,10 +69,11 @@
 import static org.apache.jackrabbit.oak.plugins.document.Collection.NODES;
 import static 
org.apache.jackrabbit.oak.plugins.document.DocumentNodeStoreHelper.createVersionGC;
 import static 
org.apache.jackrabbit.oak.plugins.document.FormatVersion.versionOf;
+import static 
org.apache.jackrabbit.oak.plugins.document.util.Utils.getFullGCMode;
 import static 
org.apache.jackrabbit.oak.plugins.document.util.Utils.getIdFromPath;
 import static 
org.apache.jackrabbit.oak.plugins.document.util.Utils.getRootDocument;
-import static 
org.apache.jackrabbit.oak.plugins.document.util.Utils.isFullGCEnabled;

Review Comment:
   same as above.



##########
oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/VersionGarbageCollector.java:
##########
@@ -211,6 +211,29 @@ static FullGCMode getFullGcMode() {
         return fullGcMode;
     }
 
+    /**
+     * Set the full GC mode to be used according to the provided configuration 
value.
+     * The configuration value will be ignored and fullGCMode will be reset to 
NONE
+     * if it is set to any other values than the supported ones.
+     * @param fullGcModeConfig
+     */
+    static void setFullGcMode(int fullGcModeConfig) {

Review Comment:
   I would suggest renaming variable name to `fullGcMode`



##########
oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/util/UtilsTest.java:
##########
@@ -236,6 +237,30 @@ public void fullGCDisabledForRDB() {
         assertFalse("Full GC is disabled for RDB Document Store", 
fullGCEnabled);
     }
 
+    @Test
+    public void fullGCModeDefaultValue() {
+        int fullGCModeDefaultValue = 
getFullGCMode(newDocumentNodeStoreBuilder());
+        final int FULL_GC_MODE_NONE = 0;

Review Comment:
   please use camelCase here.



##########
oak-store-document/src/main/java/org/apache/jackrabbit/oak/plugins/document/util/Utils.java:
##########
@@ -1009,6 +1009,16 @@ public static boolean 
isEmbeddedVerificationEnabled(final DocumentNodeStoreBuild
         return builder.isEmbeddedVerificationEnabled() || 
(docStoreEmbeddedVerificationFeature != null && 
docStoreEmbeddedVerificationFeature.isEnabled());
     }
 
+    /**
+     * Returns the full GC mode value for the DocumentNodeStore.
+     *
+     * @param builder instance for DocumentNodeStoreBuilder
+     * @return true if full GC is enabled else false
+     */
+    public static int getFullGCMode(final DocumentNodeStoreBuilder<?> builder) 
{

Review Comment:
   This utility method doesn't make sense, it only returns `fullGcMode` from 
the `builder` object. I would remove this.



##########
oak-run/src/main/java/org/apache/jackrabbit/oak/run/RevisionsCommand.java:
##########
@@ -47,13 +47,13 @@
 import org.apache.jackrabbit.oak.plugins.document.NodeDocument;
 import org.apache.jackrabbit.oak.plugins.document.RevisionContextWrapper;
 import org.apache.jackrabbit.oak.plugins.document.SweepHelper;
+import org.apache.jackrabbit.oak.plugins.document.VersionGCOptions;
 import org.apache.jackrabbit.oak.plugins.document.VersionGCSupport;
+import org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector;
 import 
org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector.VersionGCInfo;
 import 
org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector.VersionGCStats;
 import org.apache.jackrabbit.oak.plugins.document.util.MongoConnection;
 import org.apache.jackrabbit.oak.run.commons.Command;
-import org.apache.jackrabbit.oak.plugins.document.VersionGCOptions;
-import org.apache.jackrabbit.oak.plugins.document.VersionGarbageCollector;

Review Comment:
   please revert these import changes.



##########
oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/util/UtilsTest.java:
##########
@@ -236,6 +237,30 @@ public void fullGCDisabledForRDB() {
         assertFalse("Full GC is disabled for RDB Document Store", 
fullGCEnabled);
     }
 
+    @Test
+    public void fullGCModeDefaultValue() {
+        int fullGCModeDefaultValue = 
getFullGCMode(newDocumentNodeStoreBuilder());
+        final int FULL_GC_MODE_NONE = 0;
+        assertEquals("Full GC mode has NONE value by default", 
fullGCModeDefaultValue, FULL_GC_MODE_NONE);
+    }
+
+    @Test
+    public void fullGCModeSetViaConfiguration() {
+        DocumentNodeStoreBuilder<?> builder = newDocumentNodeStoreBuilder();
+        final int FULL_GC_MODE_GAP_ORPHANS = 2;

Review Comment:
   same as above.



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