clean tmp file when index merge fail

processing/src/main/java/io/druid/segment/IndexMerger.java

@@ -34,6 +34,7 @@ import com.google.common.collect.Ordering;
 import com.google.common.collect.PeekingIterator;
 import com.google.common.collect.Sets;
 import com.google.common.io.ByteStreams;
+import com.google.common.io.Closer;
 import com.google.common.io.Files;
 import com.google.common.io.OutputSupplier;
 import com.google.common.primitives.Ints;
@@ -85,6 +86,7 @@ import org.joda.time.DateTime;
 import org.joda.time.Interval;
 
 import javax.annotation.Nullable;
+import java.io.Closeable;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -604,11 +606,28 @@ public class IndexMerger
       }
     }
 
-
+    Closer closer = Closer.create();
     final Interval dataInterval;
-    File v8OutDir = new File(outDir, "v8-tmp");
+    final File v8OutDir = new File(outDir, "v8-tmp");
     v8OutDir.mkdirs();
-
+    closer.register(new Closeable()
+    {
+      @Override
+      public void close() throws IOException
+      {
+        FileUtils.deleteDirectory(v8OutDir);
+      }
+    });
+    final IOPeon ioPeon = new TmpFileIOPeon();
+    closer.register(new Closeable()
+    {
+      @Override
+      public void close() throws IOException
+      {
+        ioPeon.cleanup();
+      }
+    });
+    try {
       /*************  Main index.drd file **************/
       progress.progress();
       long startTime = System.currentTimeMillis();
@@ -640,7 +659,6 @@ public class IndexMerger
       progress.progress();
       startTime = System.currentTimeMillis();
 
-    IOPeon ioPeon = new TmpFileIOPeon();
       ArrayList<FileOutputSupplier> dimOuts = Lists.newArrayListWithCapacity(mergedDimensions.size());
       Map<String, Integer> dimensionCardinalities = Maps.newHashMap();
       ArrayList<Map<String, IntBuffer>> dimConversions = Lists.newArrayListWithCapacity(indexes.size());
@@ -1007,10 +1025,12 @@ public class IndexMerger
       );
 
       indexIO.getDefaultIndexIOHandler().convertV8toV9(v8OutDir, outDir, indexSpec);
-    FileUtils.deleteDirectory(v8OutDir);
-
       return outDir;
     }
+    finally {
+      closer.close();
+    }
+  }
 
   protected Iterable<Rowboat> makeRowIterable(
       List<IndexableAdapter> indexes,

processing/src/main/java/io/druid/segment/IndexMergerV9.java

@@ -27,6 +27,7 @@ import com.google.common.collect.Maps;
 import com.google.common.collect.Ordering;
 import com.google.common.collect.Sets;
 import com.google.common.io.ByteStreams;
+import com.google.common.io.Closer;
 import com.google.common.io.Files;
 import com.google.common.primitives.Ints;
 import com.google.inject.Inject;
@@ -74,6 +75,7 @@ import org.joda.time.DateTime;
 import org.joda.time.Interval;
 
 import java.io.ByteArrayOutputStream;
+import java.io.Closeable;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -144,12 +146,29 @@ public class IndexMergerV9 extends IndexMerger
       );
     }
 
+    Closer closer = Closer.create();
     final IOPeon ioPeon = new TmpFileIOPeon(false);
+    closer.register(new Closeable()
+    {
+      @Override
+      public void close() throws IOException
+      {
+        ioPeon.cleanup();
+      }
+    });
     final FileSmoosher v9Smoosher = new FileSmoosher(outDir);
     final File v9TmpDir = new File(outDir, "v9-tmp");
     v9TmpDir.mkdirs();
+    closer.register(new Closeable()
+    {
+      @Override
+      public void close() throws IOException
+      {
+        FileUtils.deleteDirectory(v9TmpDir);
+      }
+    });
     log.info("Start making v9 index files, outDir:%s", outDir);
-
+    try {
       long startTime = System.currentTimeMillis();
       ByteStreams.write(
           Ints.toByteArray(IndexIO.V9_VERSION),
@@ -235,12 +254,14 @@ public class IndexMergerV9 extends IndexMerger
       makeMetadataBinary(v9Smoosher, progress, segmentMetadata);
 
       v9Smoosher.close();
-    ioPeon.cleanup();
-    FileUtils.deleteDirectory(v9TmpDir);
       progress.stop();
 
       return outDir;
     }
+    finally {
+      closer.close();
+    }
+  }
 
   private void makeMetadataBinary(
       final FileSmoosher v9Smoosher,

processing/src/test/java/io/druid/segment/IndexMergerTest.java

@@ -37,6 +37,7 @@ import io.druid.query.aggregation.AggregatorFactory;
 import io.druid.query.aggregation.CountAggregatorFactory;
 import io.druid.query.aggregation.LongSumAggregatorFactory;
 import io.druid.segment.column.Column;
+import io.druid.segment.column.ColumnCapabilitiesImpl;
 import io.druid.segment.column.SimpleDictionaryEncodedColumn;
 import io.druid.segment.data.BitmapSerdeFactory;
 import io.druid.segment.data.CompressedObjectStrategy;
@@ -67,7 +68,6 @@ import java.nio.IntBuffer;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
@@ -1662,4 +1662,34 @@ public class IndexMergerTest
     Assert.assertEquals(2, dictIdSeeker.seek(4));
     Assert.assertEquals(-1, dictIdSeeker.seek(5));
   }
+
+  @Test(expected = IllegalArgumentException.class)
+  public void testCloser() throws Exception
+  {
+    final long timestamp = System.currentTimeMillis();
+    IncrementalIndex toPersist = IncrementalIndexTest.createIndex(null);
+    IncrementalIndexTest.populateIndex(timestamp, toPersist);
+    ColumnCapabilitiesImpl capabilities = (ColumnCapabilitiesImpl) toPersist.getCapabilities("dim1");
+    capabilities.setHasSpatialIndexes(true);
+
+    final File tempDir = temporaryFolder.newFolder();
+    final File v8TmpDir = new File(tempDir, "v8-tmp");
+    final File v9TmpDir = new File(tempDir, "v9-tmp");
+
+    try {
+      INDEX_MERGER.persist(
+          toPersist,
+          tempDir,
+          indexSpec
+      );
+    }
+    finally {
+      if (v8TmpDir.exists()) {
+        Assert.fail("v8-tmp dir not clean.");
+      }
+      if (v9TmpDir.exists()) {
+        Assert.fail("v9-tmp dir not clean.");
+      }
+    }
+  }
 }