diff --git a/README.md b/README.md
index e9720a94ca6..f5970e9b236 100644
--- a/README.md
+++ b/README.md
@@ -378,7 +378,6 @@ The Azure repository supports following settings:
 
 * `container`: Container name. Defaults to `elasticsearch-snapshots`
 * `base_path`: Specifies the path within container to repository data. Defaults to empty (root directory).
-* `concurrent_streams`: Throttles the number of streams (per node) preforming snapshot operation. Defaults to `5`.
 * `chunk_size`: Big files can be broken down into chunks during snapshotting if needed. The chunk size can be specified
 in bytes or by using size value notation, i.e. `1g`, `10m`, `5k`. Defaults to `64m` (64m max)
 * `compress`: When set to `true` metadata files are stored in compressed format. This setting doesn't affect index
@@ -398,7 +397,6 @@ $ curl -XPUT 'http://localhost:9200/_snapshot/my_backup2' -d '{
     "settings": {
         "container": "backup_container",
         "base_path": "backups",
-        "concurrent_streams": 2,
         "chunk_size": "32m",
         "compress": true
     }
diff --git a/pom.xml b/pom.xml
index e0baedb018c..1e0fa3aa07d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,7 @@ governing permissions and limitations under the License. -->
 
     <properties>
         <elasticsearch.version>2.0.0-SNAPSHOT</elasticsearch.version>
-        <lucene.version>4.9.0</lucene.version>
+        <lucene.version>4.10.1</lucene.version>
         <tests.output>onerror</tests.output>
         <tests.shuffle>true</tests.shuffle>
         <tests.output>onerror</tests.output>
diff --git a/src/main/java/org/elasticsearch/cloud/azure/AzureStorageService.java b/src/main/java/org/elasticsearch/cloud/azure/AzureStorageService.java
index 700fc6ab4ac..27a0ec04bf5 100644
--- a/src/main/java/org/elasticsearch/cloud/azure/AzureStorageService.java
+++ b/src/main/java/org/elasticsearch/cloud/azure/AzureStorageService.java
@@ -24,8 +24,8 @@ import com.microsoft.windowsazure.services.core.storage.StorageException;
 import org.elasticsearch.common.blobstore.BlobMetaData;
 import org.elasticsearch.common.collect.ImmutableMap;
 
-import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 import java.net.URISyntaxException;
 
 /**
@@ -38,7 +38,6 @@ public interface AzureStorageService {
         public static final String KEY = "storage_key";
         public static final String CONTAINER = "container";
         public static final String BASE_PATH = "base_path";
-        public static final String CONCURRENT_STREAMS = "concurrent_streams";
         public static final String CHUNK_SIZE = "chunk_size";
         public static final String COMPRESS = "compress";
     }
@@ -57,9 +56,7 @@ public interface AzureStorageService {
 
     InputStream getInputStream(String container, String blob) throws ServiceException;
 
+    OutputStream getOutputStream(String container, String blob) throws URISyntaxException, StorageException;
+
     ImmutableMap<String,BlobMetaData> listBlobsByPrefix(String container, String keyPath, String prefix) throws URISyntaxException, StorageException, ServiceException;
-
-    void putObject(String container, String blob, InputStream is, long length) throws URISyntaxException, StorageException, IOException;
-
-
 }
diff --git a/src/main/java/org/elasticsearch/cloud/azure/AzureStorageServiceImpl.java b/src/main/java/org/elasticsearch/cloud/azure/AzureStorageServiceImpl.java
index e968ec7a4f5..df0b8f20aaf 100644
--- a/src/main/java/org/elasticsearch/cloud/azure/AzureStorageServiceImpl.java
+++ b/src/main/java/org/elasticsearch/cloud/azure/AzureStorageServiceImpl.java
@@ -43,8 +43,8 @@ import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.settings.SettingsFilter;
 
-import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.List;
@@ -197,6 +197,11 @@ public class AzureStorageServiceImpl extends AbstractLifecycleComponent<AzureSto
         return blobResult.getContentStream();
     }
 
+    @Override
+    public OutputStream getOutputStream(String container, String blob) throws URISyntaxException, StorageException {
+        return client.getContainerReference(container).getBlockBlobReference(blob).openOutputStream();
+    }
+
     @Override
     public ImmutableMap<String, BlobMetaData> listBlobsByPrefix(String container, String keyPath, String prefix) throws URISyntaxException, StorageException, ServiceException {
         logger.debug("listBlobsByPrefix container [{}], keyPath [{}], prefix [{}]", container, keyPath, prefix);
@@ -223,16 +228,6 @@ public class AzureStorageServiceImpl extends AbstractLifecycleComponent<AzureSto
         return blobsBuilder.build();
     }
 
-    @Override
-    public void putObject(String container, String blobname, InputStream is, long length) throws URISyntaxException, StorageException, IOException {
-        if (logger.isTraceEnabled()) {
-            logger.trace("creating blob in container [{}], blob [{}], length [{}]",
-                    container, blobname, length);
-        }
-        CloudBlockBlob blob = client.getContainerReference(container).getBlockBlobReference(blobname);
-        blob.upload(is, length);
-    }
-
     @Override
     protected void doStart() throws ElasticsearchException {
         logger.debug("starting azure storage client instance");
diff --git a/src/main/java/org/elasticsearch/cloud/azure/blobstore/AbstractAzureBlobContainer.java b/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureBlobContainer.java
similarity index 75%
rename from src/main/java/org/elasticsearch/cloud/azure/blobstore/AbstractAzureBlobContainer.java
rename to src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureBlobContainer.java
index bf09f1e4845..2b3e6fc9f91 100644
--- a/src/main/java/org/elasticsearch/cloud/azure/blobstore/AbstractAzureBlobContainer.java
+++ b/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureBlobContainer.java
@@ -21,7 +21,6 @@ package org.elasticsearch.cloud.azure.blobstore;
 
 import com.microsoft.windowsazure.services.core.ServiceException;
 import com.microsoft.windowsazure.services.core.storage.StorageException;
-import org.apache.lucene.util.IOUtils;
 import org.elasticsearch.common.Nullable;
 import org.elasticsearch.common.blobstore.BlobMetaData;
 import org.elasticsearch.common.blobstore.BlobPath;
@@ -33,20 +32,21 @@ import org.elasticsearch.common.logging.ESLoggerFactory;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.net.URISyntaxException;
 
 /**
  *
  */
-public class AbstractAzureBlobContainer extends AbstractBlobContainer {
+public class AzureBlobContainer extends AbstractBlobContainer {
 
-    protected final ESLogger logger = ESLoggerFactory.getLogger(AbstractAzureBlobContainer.class.getName());
+    protected final ESLogger logger = ESLoggerFactory.getLogger(AzureBlobContainer.class.getName());
     protected final AzureBlobStore blobStore;
 
     protected final String keyPath;
 
-    public AbstractAzureBlobContainer(BlobPath path, AzureBlobStore blobStore) {
+    public AzureBlobContainer(BlobPath path, AzureBlobStore blobStore) {
         super(path);
         this.blobStore = blobStore;
         String keyPath = path.buildAsString("/");
@@ -68,6 +68,32 @@ public class AbstractAzureBlobContainer extends AbstractBlobContainer {
         return false;
     }
 
+    @Override
+    public InputStream openInput(String blobName) throws IOException {
+        try {
+            return blobStore.client().getInputStream(blobStore.container(), buildKey(blobName));
+        } catch (ServiceException e) {
+            if (e.getHttpStatusCode() == HttpURLConnection.HTTP_NOT_FOUND) {
+                throw new FileNotFoundException(e.getMessage());
+            }
+            throw new IOException(e);
+        }
+    }
+
+    @Override
+    public OutputStream createOutput(String blobName) throws IOException {
+        try {
+            return new AzureOutputStream(blobStore.client().getOutputStream(blobStore.container(), buildKey(blobName)));
+        } catch (StorageException e) {
+            if (e.getHttpStatusCode() == HttpURLConnection.HTTP_NOT_FOUND) {
+                throw new FileNotFoundException(e.getMessage());
+            }
+            throw new IOException(e);
+        } catch (URISyntaxException e) {
+            throw new IOException(e);
+        }
+    }
+
     @Override
     public boolean deleteBlob(String blobName) throws IOException {
         try {
@@ -82,35 +108,6 @@ public class AbstractAzureBlobContainer extends AbstractBlobContainer {
         }
     }
 
-    @Override
-    public void readBlob(final String blobName, final ReadBlobListener listener) {
-        blobStore.executor().execute(new Runnable() {
-            @Override
-            public void run() {
-            InputStream is = null;
-            try {
-                is = blobStore.client().getInputStream(blobStore.container(), buildKey(blobName));
-                byte[] buffer = new byte[blobStore.bufferSizeInBytes()];
-                int bytesRead;
-                while ((bytesRead = is.read(buffer)) != -1) {
-                    listener.onPartial(buffer, 0, bytesRead);
-                }
-                is.close();
-                listener.onCompleted();
-            } catch (ServiceException e) {
-                if (e.getHttpStatusCode() == HttpURLConnection.HTTP_NOT_FOUND) {
-                    listener.onFailure(new FileNotFoundException(e.getMessage()));
-                } else {
-                    listener.onFailure(e);
-                }
-            } catch (Throwable e) {
-                IOUtils.closeWhileHandlingException(is);
-                listener.onFailure(e);
-            }
-            }
-        });
-    }
-
     @Override
     public ImmutableMap<String, BlobMetaData> listBlobsByPrefix(@Nullable String prefix) throws IOException {
 
diff --git a/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureBlobStore.java b/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureBlobStore.java
index 3958e94a956..4c4d21f757c 100644
--- a/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureBlobStore.java
+++ b/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureBlobStore.java
@@ -22,16 +22,13 @@ package org.elasticsearch.cloud.azure.blobstore;
 import com.microsoft.windowsazure.services.core.ServiceException;
 import com.microsoft.windowsazure.services.core.storage.StorageException;
 import org.elasticsearch.cloud.azure.AzureStorageService;
+import org.elasticsearch.common.blobstore.BlobContainer;
 import org.elasticsearch.common.blobstore.BlobPath;
 import org.elasticsearch.common.blobstore.BlobStore;
-import org.elasticsearch.common.blobstore.ImmutableBlobContainer;
 import org.elasticsearch.common.component.AbstractComponent;
 import org.elasticsearch.common.settings.Settings;
-import org.elasticsearch.common.unit.ByteSizeUnit;
-import org.elasticsearch.common.unit.ByteSizeValue;
 
 import java.net.URISyntaxException;
-import java.util.concurrent.Executor;
 
 /**
  *
@@ -42,17 +39,10 @@ public class AzureBlobStore extends AbstractComponent implements BlobStore {
 
     private final String container;
 
-    private final Executor executor;
-
-    private final int bufferSizeInBytes;
-
-    public AzureBlobStore(Settings settings, AzureStorageService client, String container, Executor executor) throws URISyntaxException, StorageException {
+    public AzureBlobStore(Settings settings, AzureStorageService client, String container) throws URISyntaxException, StorageException {
         super(settings);
         this.client = client;
         this.container = container;
-        this.executor = executor;
-
-        this.bufferSizeInBytes = (int) settings.getAsBytesSize("buffer_size", new ByteSizeValue(100, ByteSizeUnit.KB)).bytes();
 
         if (!client.doesContainerExist(container)) {
             client.createContainer(container);
@@ -72,17 +62,9 @@ public class AzureBlobStore extends AbstractComponent implements BlobStore {
         return container;
     }
 
-    public Executor executor() {
-        return executor;
-    }
-
-    public int bufferSizeInBytes() {
-        return bufferSizeInBytes;
-    }
-
     @Override
-    public ImmutableBlobContainer immutableBlobContainer(BlobPath path) {
-        return new AzureImmutableBlobContainer(path, this);
+    public BlobContainer blobContainer(BlobPath path) {
+        return new AzureBlobContainer(path, this);
     }
 
     @Override
diff --git a/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureImmutableBlobContainer.java b/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureImmutableBlobContainer.java
deleted file mode 100644
index 2b4f80ba88b..00000000000
--- a/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureImmutableBlobContainer.java
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Licensed to Elasticsearch under one or more contributor
- * license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright
- * ownership. Elasticsearch licenses this file to you under
- * the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.elasticsearch.cloud.azure.blobstore;
-
-import org.elasticsearch.common.blobstore.BlobPath;
-import org.elasticsearch.common.blobstore.ImmutableBlobContainer;
-import org.elasticsearch.common.blobstore.support.BlobStores;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- *
- */
-public class AzureImmutableBlobContainer extends AbstractAzureBlobContainer implements ImmutableBlobContainer {
-
-    public AzureImmutableBlobContainer(BlobPath path, AzureBlobStore blobStore) {
-        super(path, blobStore);
-    }
-
-    @Override
-    public void writeBlob(final String blobName, final InputStream is, final long sizeInBytes, final WriterListener listener) {
-        blobStore.executor().execute(new Runnable() {
-            @Override
-            public void run() {
-                try {
-                    blobStore.client().putObject(blobStore.container(), buildKey(blobName), is, sizeInBytes);
-                    listener.onCompleted();
-                } catch (Throwable e) {
-                    listener.onFailure(e);
-                }
-            }
-        });
-    }
-
-    @Override
-    public void writeBlob(String blobName, InputStream is, long sizeInBytes) throws IOException {
-        BlobStores.syncWriteBlob(this, blobName, is, sizeInBytes);
-    }
-}
diff --git a/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureOutputStream.java b/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureOutputStream.java
new file mode 100644
index 00000000000..6a95eeba778
--- /dev/null
+++ b/src/main/java/org/elasticsearch/cloud/azure/blobstore/AzureOutputStream.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.cloud.azure.blobstore;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+public class AzureOutputStream extends OutputStream {
+
+    private final OutputStream blobOutputStream;
+
+    public AzureOutputStream(OutputStream blobOutputStream) {
+        this.blobOutputStream = blobOutputStream;
+    }
+
+    @Override
+    public void write(int b) throws IOException {
+        blobOutputStream.write(b);
+    }
+
+    @Override
+    public void close() throws IOException {
+        try {
+            blobOutputStream.close();
+        } catch (IOException e) {
+            // Azure is sending a "java.io.IOException: Stream is already closed."
+        }
+    }
+}
diff --git a/src/main/java/org/elasticsearch/discovery/azure/AzureDiscovery.java b/src/main/java/org/elasticsearch/discovery/azure/AzureDiscovery.java
index b890b327e56..7843880c719 100755
--- a/src/main/java/org/elasticsearch/discovery/azure/AzureDiscovery.java
+++ b/src/main/java/org/elasticsearch/discovery/azure/AzureDiscovery.java
@@ -19,7 +19,6 @@
 
 package org.elasticsearch.discovery.azure;
 
-import org.elasticsearch.Version;
 import org.elasticsearch.cloud.azure.AzureComputeService;
 import org.elasticsearch.cluster.ClusterName;
 import org.elasticsearch.cluster.ClusterService;
@@ -51,7 +50,7 @@ public class AzureDiscovery extends ZenDiscovery {
                           DiscoveryNodeService discoveryNodeService, AzureComputeService azureService, NetworkService networkService,
                           DiscoverySettings discoverySettings, ElectMasterService electMasterService) {
         super(settings, clusterName, threadPool, transportService, clusterService, nodeSettingsService,
-                discoveryNodeService, pingService, electMasterService, Version.CURRENT, discoverySettings);
+                discoveryNodeService, pingService, electMasterService, discoverySettings);
         if (settings.getAsBoolean("cloud.enabled", true)) {
             ImmutableList<? extends ZenPing> zenPings = pingService.zenPings();
             UnicastZenPing unicastZenPing = null;
diff --git a/src/main/java/org/elasticsearch/repositories/azure/AzureRepository.java b/src/main/java/org/elasticsearch/repositories/azure/AzureRepository.java
index 795ff123982..f8eb8442e32 100644
--- a/src/main/java/org/elasticsearch/repositories/azure/AzureRepository.java
+++ b/src/main/java/org/elasticsearch/repositories/azure/AzureRepository.java
@@ -28,7 +28,6 @@ import org.elasticsearch.common.blobstore.BlobStore;
 import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.unit.ByteSizeUnit;
 import org.elasticsearch.common.unit.ByteSizeValue;
-import org.elasticsearch.common.util.concurrent.EsExecutors;
 import org.elasticsearch.index.snapshots.IndexShardRepository;
 import org.elasticsearch.repositories.RepositoryName;
 import org.elasticsearch.repositories.RepositorySettings;
@@ -36,8 +35,6 @@ import org.elasticsearch.repositories.blobstore.BlobStoreRepository;
 
 import java.io.IOException;
 import java.net.URISyntaxException;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.TimeUnit;
 
 /**
  * Azure file system implementation of the BlobStoreRepository
@@ -46,7 +43,6 @@ import java.util.concurrent.TimeUnit;
  * <dl>
  * <dt>{@code container}</dt><dd>Azure container name. Defaults to elasticsearch-snapshots</dd>
  * <dt>{@code base_path}</dt><dd>Specifies the path within bucket to repository data. Defaults to root directory.</dd>
- * <dt>{@code concurrent_streams}</dt><dd>Number of concurrent read/write stream (per repository on each node). Defaults to 5.</dd>
  * <dt>{@code chunk_size}</dt><dd>Large file can be divided into chunks. This parameter specifies the chunk size. Defaults to 64mb.</dd>
  * <dt>{@code compress}</dt><dd>If set to true metadata files will be stored compressed. Defaults to false.</dd>
  * </dl>
@@ -80,12 +76,7 @@ public class AzureRepository extends BlobStoreRepository {
         String container = repositorySettings.settings().get(AzureStorageService.Fields.CONTAINER,
                 componentSettings.get(AzureStorageService.Fields.CONTAINER, CONTAINER_DEFAULT));
 
-        int concurrentStreams = repositorySettings.settings().getAsInt(AzureStorageService.Fields.CONCURRENT_STREAMS,
-                componentSettings.getAsInt(AzureStorageService.Fields.CONCURRENT_STREAMS, 5));
-        ExecutorService concurrentStreamPool = EsExecutors.newScaling(1, concurrentStreams, 5, TimeUnit.SECONDS,
-                EsExecutors.daemonThreadFactory(settings, "[azure_stream]"));
-
-        this.blobStore = new AzureBlobStore(settings, azureStorageService, container, concurrentStreamPool);
+        this.blobStore = new AzureBlobStore(settings, azureStorageService, container);
         this.chunkSize = repositorySettings.settings().getAsBytesSize(AzureStorageService.Fields.CHUNK_SIZE,
                 componentSettings.getAsBytesSize(AzureStorageService.Fields.CHUNK_SIZE, new ByteSizeValue(64, ByteSizeUnit.MB)));
 
@@ -109,8 +100,8 @@ public class AzureRepository extends BlobStoreRepository {
         } else {
             this.basePath = BlobPath.cleanPath();
         }
-        logger.debug("using container [{}], chunk_size [{}], concurrent_streams [{}], compress [{}], base_path [{}]",
-                container, chunkSize, concurrentStreams, compress, basePath);
+        logger.debug("using container [{}], chunk_size [{}], compress [{}], base_path [{}]",
+                container, chunkSize, compress, basePath);
     }
 
     /**
diff --git a/src/test/java/org/elasticsearch/repositories/azure/AzureStorageServiceMock.java b/src/test/java/org/elasticsearch/repositories/azure/AzureStorageServiceMock.java
index 064823ee530..2c1aa616894 100644
--- a/src/test/java/org/elasticsearch/repositories/azure/AzureStorageServiceMock.java
+++ b/src/test/java/org/elasticsearch/repositories/azure/AzureStorageServiceMock.java
@@ -19,6 +19,7 @@
 
 package org.elasticsearch.repositories.azure;
 
+import com.microsoft.windowsazure.services.core.storage.StorageException;
 import org.elasticsearch.ElasticsearchException;
 import org.elasticsearch.cloud.azure.AzureStorageService;
 import org.elasticsearch.common.blobstore.BlobMetaData;
@@ -28,10 +29,8 @@ import org.elasticsearch.common.component.AbstractLifecycleComponent;
 import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.settings.Settings;
 
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
+import java.io.*;
+import java.net.URISyntaxException;
 import java.util.Locale;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
@@ -42,7 +41,7 @@ import java.util.concurrent.ConcurrentHashMap;
 public class AzureStorageServiceMock extends AbstractLifecycleComponent<AzureStorageServiceMock>
         implements AzureStorageService {
 
-    protected Map<String, byte[]> blobs = new ConcurrentHashMap<String, byte[]>();
+    protected Map<String, ByteArrayOutputStream> blobs = new ConcurrentHashMap<String, ByteArrayOutputStream>();
 
     @Inject
     protected AzureStorageServiceMock(Settings settings) {
@@ -78,7 +77,14 @@ public class AzureStorageServiceMock extends AbstractLifecycleComponent<AzureSto
 
     @Override
     public InputStream getInputStream(String container, String blob) {
-        return new ByteArrayInputStream(blobs.get(blob));
+        return new ByteArrayInputStream(blobs.get(blob).toByteArray());
+    }
+
+    @Override
+    public OutputStream getOutputStream(String container, String blob) throws URISyntaxException, StorageException {
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        blobs.put(blob, outputStream);
+        return outputStream;
     }
 
     @Override
@@ -86,32 +92,13 @@ public class AzureStorageServiceMock extends AbstractLifecycleComponent<AzureSto
         ImmutableMap.Builder<String, BlobMetaData> blobsBuilder = ImmutableMap.builder();
         for (String blobName : blobs.keySet()) {
             if (startsWithIgnoreCase(blobName, prefix)) {
-                blobsBuilder.put(blobName, new PlainBlobMetaData(blobName, blobs.get(blobName).length));
+                blobsBuilder.put(blobName, new PlainBlobMetaData(blobName, blobs.get(blobName).size()));
             }
         }
         ImmutableMap<String, BlobMetaData> map = blobsBuilder.build();
         return map;
     }
 
-    @Override
-    public void putObject(String container, String blob, InputStream is, long length) {
-        try {
-            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
-
-            int nRead;
-            byte[] data = new byte[65535];
-
-            while ((nRead = is.read(data, 0, data.length)) != -1) {
-                buffer.write(data, 0, nRead);
-            }
-
-            buffer.flush();
-
-            blobs.put(blob, buffer.toByteArray());
-        } catch (IOException e) {
-        }
-    }
-
     @Override
     protected void doStart() throws ElasticsearchException {
     }