diff --git a/indexing-hadoop/src/main/java/org/apache/druid/indexer/path/DatasourcePathSpec.java b/indexing-hadoop/src/main/java/org/apache/druid/indexer/path/DatasourcePathSpec.java
index 424d5e7b820..c56dfaeb089 100644
--- a/indexing-hadoop/src/main/java/org/apache/druid/indexer/path/DatasourcePathSpec.java
+++ b/indexing-hadoop/src/main/java/org/apache/druid/indexer/path/DatasourcePathSpec.java
@@ -19,10 +19,8 @@
 
 package org.apache.druid.indexer.path;
 
-import com.fasterxml.jackson.annotation.JacksonInject;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.base.Function;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Iterables;
@@ -51,7 +49,6 @@ public class DatasourcePathSpec implements PathSpec
 
   public static final String TYPE = "dataSource";
 
-  private final ObjectMapper mapper;
   private final DatasourceIngestionSpec ingestionSpec;
   private final long maxSplitSize;
   private final List<WindowedDataSegment> segments;
@@ -67,14 +64,12 @@ public class DatasourcePathSpec implements PathSpec
 
   @JsonCreator
   public DatasourcePathSpec(
-      @JacksonInject ObjectMapper mapper,
       @JsonProperty("segments") List<WindowedDataSegment> segments,
       @JsonProperty("ingestionSpec") DatasourceIngestionSpec spec,
       @JsonProperty("maxSplitSize") Long maxSplitSize,
       @JsonProperty(USE_NEW_AGGS_KEY) boolean useNewAggs
   )
   {
-    this.mapper = Preconditions.checkNotNull(mapper, "null mapper");
     this.segments = segments;
     this.ingestionSpec = Preconditions.checkNotNull(spec, "null ingestionSpec");
 
diff --git a/indexing-hadoop/src/test/java/org/apache/druid/indexer/HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest.java b/indexing-hadoop/src/test/java/org/apache/druid/indexer/HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest.java
index 09d5b663d22..c915a4dc59a 100644
--- a/indexing-hadoop/src/test/java/org/apache/druid/indexer/HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest.java
+++ b/indexing-hadoop/src/test/java/org/apache/druid/indexer/HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest.java
@@ -111,7 +111,6 @@ public class HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest
   public void testUpdateSegmentListIfDatasourcePathSpecIsUsedWithJustDatasourcePathSpec() throws Exception
   {
     PathSpec pathSpec = new DatasourcePathSpec(
-        jsonMapper,
         null,
         new DatasourceIngestionSpec(testDatasource, testDatasourceInterval, null, null, null, null, null, false, null),
         null,
@@ -131,7 +130,6 @@ public class HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest
   public void testUpdateSegmentListIfDatasourcePathSpecWithMatchingUserSegments() throws Exception
   {
     PathSpec pathSpec = new DatasourcePathSpec(
-        jsonMapper,
         null,
         new DatasourceIngestionSpec(
             testDatasource,
@@ -161,7 +159,6 @@ public class HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest
   public void testUpdateSegmentListThrowsExceptionWithUserSegmentsMismatch() throws Exception
   {
     PathSpec pathSpec = new DatasourcePathSpec(
-        jsonMapper,
         null,
         new DatasourceIngestionSpec(
             testDatasource,
@@ -188,7 +185,6 @@ public class HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest
       throws Exception
   {
     PathSpec pathSpec = new DatasourcePathSpec(
-        jsonMapper,
         null,
         new DatasourceIngestionSpec(
             testDatasource,
@@ -221,7 +217,6 @@ public class HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest
         ImmutableList.of(
             new StaticPathSpec("/xyz", null),
             new DatasourcePathSpec(
-                jsonMapper,
                 null,
                 new DatasourceIngestionSpec(
                     testDatasource,
@@ -238,7 +233,6 @@ public class HadoopIngestionSpecUpdateDatasourcePathSpecSegmentsTest
                 false
             ),
             new DatasourcePathSpec(
-                jsonMapper,
                 null,
                 new DatasourceIngestionSpec(
                     testDatasource2,
diff --git a/indexing-hadoop/src/test/java/org/apache/druid/indexer/path/DatasourcePathSpecTest.java b/indexing-hadoop/src/test/java/org/apache/druid/indexer/path/DatasourcePathSpecTest.java
index a229d8be348..a6535a4c54f 100644
--- a/indexing-hadoop/src/test/java/org/apache/druid/indexer/path/DatasourcePathSpecTest.java
+++ b/indexing-hadoop/src/test/java/org/apache/druid/indexer/path/DatasourcePathSpecTest.java
@@ -41,13 +41,11 @@ import org.apache.druid.indexer.hadoop.DatasourceIngestionSpec;
 import org.apache.druid.indexer.hadoop.DatasourceInputFormat;
 import org.apache.druid.indexer.hadoop.WindowedDataSegment;
 import org.apache.druid.initialization.Initialization;
-import org.apache.druid.jackson.DefaultObjectMapper;
 import org.apache.druid.java.util.common.ISE;
 import org.apache.druid.java.util.common.Intervals;
 import org.apache.druid.java.util.common.granularity.Granularities;
 import org.apache.druid.query.aggregation.AggregatorFactory;
 import org.apache.druid.query.aggregation.LongSumAggregatorFactory;
-import org.apache.druid.segment.TestHelper;
 import org.apache.druid.segment.indexing.DataSchema;
 import org.apache.druid.segment.indexing.granularity.UniformGranularitySpec;
 import org.apache.druid.server.DruidNode;
@@ -182,7 +180,6 @@ public class DatasourcePathSpecTest
     ObjectMapper jsonMapper = injector.getInstance(ObjectMapper.class);
 
     DatasourcePathSpec expected = new DatasourcePathSpec(
-        jsonMapper,
         null,
         ingestionSpec1,
         Long.valueOf(10),
@@ -192,7 +189,6 @@ public class DatasourcePathSpecTest
     Assert.assertEquals(expected, actual);
 
     expected = new DatasourcePathSpec(
-        jsonMapper,
         null,
         ingestionSpec1,
         null,
@@ -202,7 +198,6 @@ public class DatasourcePathSpecTest
     Assert.assertEquals(expected, actual);
 
     expected = new DatasourcePathSpec(
-        jsonMapper,
         segments1,
         ingestionSpec1,
         null,
@@ -212,7 +207,6 @@ public class DatasourcePathSpecTest
     Assert.assertEquals(expected, actual);
 
     expected = new DatasourcePathSpec(
-        jsonMapper,
         segments1,
         ingestionSpec1,
         null,
@@ -227,10 +221,7 @@ public class DatasourcePathSpecTest
   {
     HadoopDruidIndexerConfig hadoopIndexerConfig = makeHadoopDruidIndexerConfig();
 
-    ObjectMapper mapper = TestHelper.makeJsonMapper();
-
     DatasourcePathSpec pathSpec1 = new DatasourcePathSpec(
-        mapper,
         segments1,
         ingestionSpec1,
         null,
@@ -238,7 +229,6 @@ public class DatasourcePathSpecTest
     );
 
     DatasourcePathSpec pathSpec2 = new DatasourcePathSpec(
-        mapper,
         segments2,
         ingestionSpec2,
         null,
@@ -281,10 +271,7 @@ public class DatasourcePathSpecTest
   {
     HadoopDruidIndexerConfig hadoopIndexerConfig = makeHadoopDruidIndexerConfig();
 
-    ObjectMapper mapper = new DefaultObjectMapper();
-
     DatasourcePathSpec pathSpec = new DatasourcePathSpec(
-        mapper,
         null,
         ingestionSpec1,
         null,
@@ -306,7 +293,6 @@ public class DatasourcePathSpecTest
 
     //now with ignoreWhenNoSegments flag set
     pathSpec = new DatasourcePathSpec(
-        mapper,
         null,
         ingestionSpec1.withIgnoreWhenNoSegments(true),
         null,