DataSegmentPusher: Add allowed hadoop property prefixes.

api/src/main/java/io/druid/segment/loading/DataSegmentPusher.java

@@ -26,6 +26,8 @@
 import java.io.File;
 import java.io.IOException;
 import java.net.URI;
+import java.util.Collections;
+import java.util.List;
 import java.util.Map;
 
 public interface DataSegmentPusher
@@ -45,6 +47,15 @@ default String makeIndexPathName(DataSegment dataSegment, String indexName) {
     return StringUtils.format("./%s/%s", getStorageDir(dataSegment), indexName);
   }
 
+  /**
+   * Property prefixes that should be added to the "allowedHadoopPrefix" config for passing down to Hadoop jobs. These
+   * should be property prefixes like "druid.xxx", which means to include "druid.xxx" and "druid.xxx.*".
+   */
+  default List<String> getAllowedPropertyPrefixesForHadoop()
+  {
+    return Collections.emptyList();
+  }
+
   // Note: storage directory structure format = .../dataSource/interval/version/partitionNumber/
   // If above format is ever changed, make sure to change it appropriately in other places
   // e.g. HDFSDataSegmentKiller uses this information to clean the version, interval and dataSource directories

extensions-contrib/azure-extensions/src/main/java/io/druid/storage/azure/AzureDataSegmentPusher.java

@@ -21,6 +21,7 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.base.Throwables;
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.inject.Inject;
 import com.microsoft.azure.storage.StorageException;
@@ -37,6 +38,7 @@
 import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Callable;
 
@@ -73,6 +75,12 @@ public String getPathForHadoop()
     return null;
   }
 
+  @Override
+  public List<String> getAllowedPropertyPrefixesForHadoop()
+  {
+    return ImmutableList.of("druid.azure");
+  }
+
   public File createSegmentDescriptorFile(final ObjectMapper jsonMapper, final DataSegment segment) throws
                                                                                                     IOException
   {

extensions-contrib/google-extensions/src/main/java/io/druid/storage/google/GoogleDataSegmentPusher.java

@@ -24,6 +24,7 @@
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Strings;
 import com.google.common.base.Throwables;
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.inject.Inject;
 import io.druid.java.util.common.CompressionUtils;
@@ -38,6 +39,7 @@
 import java.io.IOException;
 import java.net.URI;
 import java.nio.file.Files;
+import java.util.List;
 import java.util.Map;
 
 public class GoogleDataSegmentPusher implements DataSegmentPusher
@@ -75,6 +77,12 @@ public String getPathForHadoop()
     return StringUtils.format("gs://%s/%s", config.getBucket(), config.getPrefix());
   }
 
+  @Override
+  public List<String> getAllowedPropertyPrefixesForHadoop()
+  {
+    return ImmutableList.of("druid.google");
+  }
+
   public File createDescriptorFile(final ObjectMapper jsonMapper, final DataSegment segment)
       throws IOException
   {

extensions-core/s3-extensions/src/main/java/io/druid/storage/s3/S3DataSegmentPusher.java

@@ -21,6 +21,7 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.base.Throwables;
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.inject.Inject;
 import com.metamx.emitter.EmittingLogger;
@@ -38,6 +39,7 @@
 import java.io.IOException;
 import java.net.URI;
 import java.nio.file.Files;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Callable;
 
@@ -79,6 +81,12 @@ public String getPathForHadoop(String dataSource)
     return getPathForHadoop();
   }
 
+  @Override
+  public List<String> getAllowedPropertyPrefixesForHadoop()
+  {
+    return ImmutableList.of("druid.s3");
+  }
+
   @Override
   public DataSegment push(final File indexFilesDir, final DataSegment inSegment) throws IOException
   {

indexing-hadoop/src/main/java/io/druid/indexer/HadoopDruidIndexerConfig.java

@@ -74,6 +74,7 @@
 import java.io.Reader;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -259,7 +260,13 @@ public ShardSpec apply(HadoopyShardSpec input)
 
     }
     this.rollupGran = spec.getDataSchema().getGranularitySpec().getQueryGranularity();
-    this.allowedHadoopPrefix = spec.getTuningConfig().getAllowedHadoopPrefix();
+
+    // User-specified list plus our additional bonus list.
+    this.allowedHadoopPrefix = new ArrayList<>();
+    this.allowedHadoopPrefix.add("druid.storage");
+    this.allowedHadoopPrefix.add("druid.javascript");
+    this.allowedHadoopPrefix.addAll(DATA_SEGMENT_PUSHER.getAllowedPropertyPrefixesForHadoop());
+    this.allowedHadoopPrefix.addAll(spec.getTuningConfig().getUserAllowedHadoopPrefix());
   }
 
   @JsonProperty(value = "spec")

indexing-hadoop/src/main/java/io/druid/indexer/HadoopTuningConfig.java

@@ -137,9 +137,7 @@ public HadoopTuningConfig(
     this.forceExtendableShardSpecs = forceExtendableShardSpecs;
     Preconditions.checkArgument(this.numBackgroundPersistThreads >= 0, "Not support persistBackgroundCount < 0");
     this.useExplicitVersion = useExplicitVersion;
-    this.allowedHadoopPrefix = allowedHadoopPrefix == null
-                               ? ImmutableList.of("druid.storage.", "druid.javascript.")
-                               : allowedHadoopPrefix;
+    this.allowedHadoopPrefix = allowedHadoopPrefix == null ? ImmutableList.of() : allowedHadoopPrefix;
   }
 
   @JsonProperty
@@ -323,9 +321,10 @@ public HadoopTuningConfig withShardSpecs(Map<Long, List<HadoopyShardSpec>> specs
     );
   }
 
-  @JsonProperty
-  public List<String> getAllowedHadoopPrefix()
+  @JsonProperty("allowedHadoopPrefix")
+  public List<String> getUserAllowedHadoopPrefix()
   {
+    // Just the user-specified list. More are added in HadoopDruidIndexerConfig.
     return allowedHadoopPrefix;
   }
 }

indexing-hadoop/src/main/java/io/druid/indexer/JobHelper.java

@@ -313,7 +313,7 @@ public static void injectDruidProperties(Configuration configuration, List<Strin
 
     for (String propName : System.getProperties().stringPropertyNames()) {
       for (String prefix : listOfAllowedPrefix) {
-        if (propName.startsWith(prefix)) {
+        if (propName.equals(prefix) || propName.startsWith(prefix + ".")) {
           mapJavaOpts = StringUtils.format("%s -D%s=%s", mapJavaOpts, propName, System.getProperty(propName));
           reduceJavaOpts = StringUtils.format("%s -D%s=%s", reduceJavaOpts, propName, System.getProperty(propName));
           break;