diff --git a/server/src/main/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStats.java b/server/src/main/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStats.java
index 03b01f88a3a20..62f475ebfa36f 100644
--- a/server/src/main/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStats.java
+++ b/server/src/main/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStats.java
@@ -14,12 +14,10 @@
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
 import org.elasticsearch.common.unit.ByteSizeValue;
-import org.elasticsearch.common.xcontent.XContentParserUtils;
 import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.xcontent.ToXContent;
 import org.elasticsearch.xcontent.ToXContentObject;
 import org.elasticsearch.xcontent.XContentBuilder;
-import org.elasticsearch.xcontent.XContentParser;
 
 import java.io.IOException;
 
@@ -192,108 +190,6 @@ public XContentBuilder toXContent(XContentBuilder builder, ToXContent.Params par
         return builder.endObject();
     }
 
-    public static SnapshotStats fromXContent(XContentParser parser) throws IOException {
-        // Parse this old school style instead of using the ObjectParser since there's an impedance mismatch between how the
-        // object has historically been written as JSON versus how it is structured in Java.
-        XContentParser.Token token = parser.currentToken();
-        if (token == null) {
-            token = parser.nextToken();
-        }
-        XContentParserUtils.ensureExpectedToken(XContentParser.Token.START_OBJECT, token, parser);
-        long startTime = 0;
-        long time = 0;
-        int incrementalFileCount = 0;
-        int totalFileCount = 0;
-        int processedFileCount = 0;
-        long incrementalSize = 0;
-        long totalSize = 0;
-        long processedSize = 0;
-        while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
-            XContentParserUtils.ensureExpectedToken(XContentParser.Token.FIELD_NAME, token, parser);
-            String currentName = parser.currentName();
-            token = parser.nextToken();
-            if (currentName.equals(Fields.INCREMENTAL)) {
-                XContentParserUtils.ensureExpectedToken(XContentParser.Token.START_OBJECT, token, parser);
-                while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
-                    XContentParserUtils.ensureExpectedToken(XContentParser.Token.FIELD_NAME, token, parser);
-                    String innerName = parser.currentName();
-                    token = parser.nextToken();
-                    if (innerName.equals(Fields.FILE_COUNT)) {
-                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
-                        incrementalFileCount = parser.intValue();
-                    } else if (innerName.equals(Fields.SIZE_IN_BYTES)) {
-                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
-                        incrementalSize = parser.longValue();
-                    } else {
-                        // Unknown sub field, skip
-                        if (token == XContentParser.Token.START_OBJECT || token == XContentParser.Token.START_ARRAY) {
-                            parser.skipChildren();
-                        }
-                    }
-                }
-            } else if (currentName.equals(Fields.PROCESSED)) {
-                XContentParserUtils.ensureExpectedToken(XContentParser.Token.START_OBJECT, token, parser);
-                while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
-                    XContentParserUtils.ensureExpectedToken(XContentParser.Token.FIELD_NAME, token, parser);
-                    String innerName = parser.currentName();
-                    token = parser.nextToken();
-                    if (innerName.equals(Fields.FILE_COUNT)) {
-                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
-                        processedFileCount = parser.intValue();
-                    } else if (innerName.equals(Fields.SIZE_IN_BYTES)) {
-                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
-                        processedSize = parser.longValue();
-                    } else {
-                        // Unknown sub field, skip
-                        if (token == XContentParser.Token.START_OBJECT || token == XContentParser.Token.START_ARRAY) {
-                            parser.skipChildren();
-                        }
-                    }
-                }
-            } else if (currentName.equals(Fields.TOTAL)) {
-                XContentParserUtils.ensureExpectedToken(XContentParser.Token.START_OBJECT, token, parser);
-                while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
-                    XContentParserUtils.ensureExpectedToken(XContentParser.Token.FIELD_NAME, token, parser);
-                    String innerName = parser.currentName();
-                    token = parser.nextToken();
-                    if (innerName.equals(Fields.FILE_COUNT)) {
-                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
-                        totalFileCount = parser.intValue();
-                    } else if (innerName.equals(Fields.SIZE_IN_BYTES)) {
-                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
-                        totalSize = parser.longValue();
-                    } else {
-                        // Unknown sub field, skip
-                        if (token == XContentParser.Token.START_OBJECT || token == XContentParser.Token.START_ARRAY) {
-                            parser.skipChildren();
-                        }
-                    }
-                }
-            } else if (currentName.equals(Fields.START_TIME_IN_MILLIS)) {
-                XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
-                startTime = parser.longValue();
-            } else if (currentName.equals(Fields.TIME_IN_MILLIS)) {
-                XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
-                time = parser.longValue();
-            } else {
-                // Unknown field, skip
-                if (token == XContentParser.Token.START_OBJECT || token == XContentParser.Token.START_ARRAY) {
-                    parser.skipChildren();
-                }
-            }
-        }
-        return new SnapshotStats(
-            startTime,
-            time,
-            incrementalFileCount,
-            totalFileCount,
-            processedFileCount,
-            incrementalSize,
-            totalSize,
-            processedSize
-        );
-    }
-
     /**
      * Add stats instance to the total
      * @param stats Stats instance to add
diff --git a/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotIndexShardStatusTests.java b/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotIndexShardStatusTests.java
index f79bd5f6ad864..2a2e39d562c7f 100644
--- a/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotIndexShardStatusTests.java
+++ b/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotIndexShardStatusTests.java
@@ -95,7 +95,11 @@ protected boolean supportsUnknownFields() {
         innerParser.declareString(constructorArg(), new ParseField(SnapshotIndexShardStatus.Fields.STAGE));
         innerParser.declareString(optionalConstructorArg(), new ParseField(SnapshotIndexShardStatus.Fields.NODE));
         innerParser.declareString(optionalConstructorArg(), new ParseField(SnapshotIndexShardStatus.Fields.REASON));
-        innerParser.declareObject(constructorArg(), (p, c) -> SnapshotStats.fromXContent(p), new ParseField(SnapshotStats.Fields.STATS));
+        innerParser.declareObject(
+            constructorArg(),
+            (p, c) -> SnapshotStatsTests.fromXContent(p),
+            new ParseField(SnapshotStats.Fields.STATS)
+        );
         PARSER = (p, indexId, shardName) -> {
             // Combine the index name in the context with the shard name passed in for the named object parser
             // into a ShardId to pass as context for the inner parser.
diff --git a/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotIndexStatusTests.java b/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotIndexStatusTests.java
index 27e47b9a961e7..f93878652684b 100644
--- a/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotIndexStatusTests.java
+++ b/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotIndexStatusTests.java
@@ -57,7 +57,11 @@ public class SnapshotIndexStatusTests extends AbstractXContentTestCase<SnapshotI
             (p, c) -> SnapshotShardsStatsTests.PARSER.apply(p, null),
             new ParseField(SnapshotShardsStats.Fields.SHARDS_STATS)
         );
-        innerParser.declareObject(constructorArg(), (p, c) -> SnapshotStats.fromXContent(p), new ParseField(SnapshotStats.Fields.STATS));
+        innerParser.declareObject(
+            constructorArg(),
+            (p, c) -> SnapshotStatsTests.fromXContent(p),
+            new ParseField(SnapshotStats.Fields.STATS)
+        );
         innerParser.declareNamedObjects(
             constructorArg(),
             SnapshotIndexShardStatusTests.PARSER,
diff --git a/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStatsTests.java b/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStatsTests.java
index e0411254e1280..86403b1142c74 100644
--- a/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStatsTests.java
+++ b/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStatsTests.java
@@ -9,6 +9,7 @@
 
 package org.elasticsearch.action.admin.cluster.snapshots.status;
 
+import org.elasticsearch.common.xcontent.XContentParserUtils;
 import org.elasticsearch.test.AbstractXContentTestCase;
 import org.elasticsearch.xcontent.XContentParser;
 
@@ -27,6 +28,14 @@ protected SnapshotStats createTestInstance() {
         long incrementalSize = ((long) randomIntBetween(0, Integer.MAX_VALUE)) * 2;
         long totalSize = ((long) randomIntBetween(0, Integer.MAX_VALUE)) * 2;
         long processedSize = ((long) randomIntBetween(0, Integer.MAX_VALUE)) * 2;
+
+        // toXContent() omits the "processed" sub-object if processedFileCount == incrementalFileCount, so here we increase the probability
+        // of that scenario so we can make sure the processed values are set as expected in fromXContent().
+        if (randomBoolean()) {
+            processedFileCount = incrementalFileCount;
+            processedSize = incrementalSize;
+        }
+
         return new SnapshotStats(
             startTime,
             time,
@@ -41,11 +50,119 @@ protected SnapshotStats createTestInstance() {
 
     @Override
     protected SnapshotStats doParseInstance(XContentParser parser) throws IOException {
-        return SnapshotStats.fromXContent(parser);
+        return fromXContent(parser);
     }
 
     @Override
     protected boolean supportsUnknownFields() {
         return true;
     }
+
+    static SnapshotStats fromXContent(XContentParser parser) throws IOException {
+        // Parse this old school style instead of using the ObjectParser since there's an impedance mismatch between how the
+        // object has historically been written as JSON versus how it is structured in Java.
+        XContentParser.Token token = parser.currentToken();
+        if (token == null) {
+            token = parser.nextToken();
+        }
+        XContentParserUtils.ensureExpectedToken(XContentParser.Token.START_OBJECT, token, parser);
+        long startTime = 0;
+        long time = 0;
+        int incrementalFileCount = 0;
+        int totalFileCount = 0;
+        int processedFileCount = Integer.MIN_VALUE;
+        long incrementalSize = 0;
+        long totalSize = 0;
+        long processedSize = Long.MIN_VALUE;
+        while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
+            XContentParserUtils.ensureExpectedToken(XContentParser.Token.FIELD_NAME, token, parser);
+            String currentName = parser.currentName();
+            token = parser.nextToken();
+            if (currentName.equals(SnapshotStats.Fields.INCREMENTAL)) {
+                XContentParserUtils.ensureExpectedToken(XContentParser.Token.START_OBJECT, token, parser);
+                while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
+                    XContentParserUtils.ensureExpectedToken(XContentParser.Token.FIELD_NAME, token, parser);
+                    String innerName = parser.currentName();
+                    token = parser.nextToken();
+                    if (innerName.equals(SnapshotStats.Fields.FILE_COUNT)) {
+                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
+                        incrementalFileCount = parser.intValue();
+                    } else if (innerName.equals(SnapshotStats.Fields.SIZE_IN_BYTES)) {
+                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
+                        incrementalSize = parser.longValue();
+                    } else {
+                        // Unknown sub field, skip
+                        if (token == XContentParser.Token.START_OBJECT || token == XContentParser.Token.START_ARRAY) {
+                            parser.skipChildren();
+                        }
+                    }
+                }
+            } else if (currentName.equals(SnapshotStats.Fields.PROCESSED)) {
+                XContentParserUtils.ensureExpectedToken(XContentParser.Token.START_OBJECT, token, parser);
+                while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
+                    XContentParserUtils.ensureExpectedToken(XContentParser.Token.FIELD_NAME, token, parser);
+                    String innerName = parser.currentName();
+                    token = parser.nextToken();
+                    if (innerName.equals(SnapshotStats.Fields.FILE_COUNT)) {
+                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
+                        processedFileCount = parser.intValue();
+                    } else if (innerName.equals(SnapshotStats.Fields.SIZE_IN_BYTES)) {
+                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
+                        processedSize = parser.longValue();
+                    } else {
+                        // Unknown sub field, skip
+                        if (token == XContentParser.Token.START_OBJECT || token == XContentParser.Token.START_ARRAY) {
+                            parser.skipChildren();
+                        }
+                    }
+                }
+            } else if (currentName.equals(SnapshotStats.Fields.TOTAL)) {
+                XContentParserUtils.ensureExpectedToken(XContentParser.Token.START_OBJECT, token, parser);
+                while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
+                    XContentParserUtils.ensureExpectedToken(XContentParser.Token.FIELD_NAME, token, parser);
+                    String innerName = parser.currentName();
+                    token = parser.nextToken();
+                    if (innerName.equals(SnapshotStats.Fields.FILE_COUNT)) {
+                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
+                        totalFileCount = parser.intValue();
+                    } else if (innerName.equals(SnapshotStats.Fields.SIZE_IN_BYTES)) {
+                        XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
+                        totalSize = parser.longValue();
+                    } else {
+                        // Unknown sub field, skip
+                        if (token == XContentParser.Token.START_OBJECT || token == XContentParser.Token.START_ARRAY) {
+                            parser.skipChildren();
+                        }
+                    }
+                }
+            } else if (currentName.equals(SnapshotStats.Fields.START_TIME_IN_MILLIS)) {
+                XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
+                startTime = parser.longValue();
+            } else if (currentName.equals(SnapshotStats.Fields.TIME_IN_MILLIS)) {
+                XContentParserUtils.ensureExpectedToken(XContentParser.Token.VALUE_NUMBER, token, parser);
+                time = parser.longValue();
+            } else {
+                // Unknown field, skip
+                if (token == XContentParser.Token.START_OBJECT || token == XContentParser.Token.START_ARRAY) {
+                    parser.skipChildren();
+                }
+            }
+        }
+        // Handle the case where the "processed" sub-object is omitted in toXContent() when processedFileCount == incrementalFileCount.
+        if (processedFileCount == Integer.MIN_VALUE) {
+            assert processedSize == Long.MIN_VALUE;
+            processedFileCount = incrementalFileCount;
+            processedSize = incrementalSize;
+        }
+        return new SnapshotStats(
+            startTime,
+            time,
+            incrementalFileCount,
+            totalFileCount,
+            processedFileCount,
+            incrementalSize,
+            totalSize,
+            processedSize
+        );
+    }
 }
diff --git a/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStatusTests.java b/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStatusTests.java
index 31efa53ab8aee..01b09ed0b8198 100644
--- a/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStatusTests.java
+++ b/server/src/test/java/org/elasticsearch/action/admin/cluster/snapshots/status/SnapshotStatusTests.java
@@ -77,7 +77,7 @@ public class SnapshotStatusTests extends AbstractChunkedSerializingTestCase<Snap
         PARSER.declareBoolean(optionalConstructorArg(), new ParseField(SnapshotStatus.INCLUDE_GLOBAL_STATE));
         PARSER.declareField(
             constructorArg(),
-            SnapshotStats::fromXContent,
+            SnapshotStatsTests::fromXContent,
             new ParseField(SnapshotStats.Fields.STATS),
             ObjectParser.ValueType.OBJECT
         );