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https://issues.apache.org/jira/browse/APEXMALHAR-2013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15203922#comment-15203922
]
ASF GitHub Bot commented on APEXMALHAR-2013:
--------------------------------------------
Github user yogidevendra commented on a diff in the pull request:
https://github.com/apache/incubator-apex-malhar/pull/216#discussion_r56794075
--- Diff:
library/src/test/java/com/datatorrent/lib/io/fs/FastMergerDecisionMakerTest.java
---
@@ -0,0 +1,188 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF 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 com.datatorrent.lib.io.fs;
+
+import java.io.IOException;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Matchers;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+
+import com.datatorrent.lib.io.fs.FileStitcher.BlockNotFoundException;
+import com.datatorrent.lib.io.fs.HDFSFileMerger.FastMergerDecisionMaker;
+import com.datatorrent.lib.io.fs.Synchronizer.OutputFileMetadata;
+
+import static org.junit.Assert.fail;
+import static org.mockito.Mockito.when;
+
+/**
+ * Unit tests for {@link FastMergerDecisionMaker}
+ */
+
+public class FastMergerDecisionMakerTest
+{
+ private static final long DEFAULT_BLOCK_SIZE = 100L;
+ private static final short[] DEFAULT_REPLICATION = new short[]
{(short)3, (short)3, (short)3 };
+
+ FastMergerDecisionMaker fastMergerDecisionMaker;
+ @Mock
+ OutputFileMetadata fileMetadata;
+ @Mock
+ FileSystem appFS;
+ @Mock
+ FileStatus status0;
+ @Mock
+ FileStatus status1;
+ @Mock
+ FileStatus status2;
+
+ @Before
+ public void setup()
+ {
+ MockitoAnnotations.initMocks(this);
+
+ when(fileMetadata.getNumberOfBlocks()).thenReturn(3);
+ when(fileMetadata.getBlockIds()).thenReturn(new long[] {0L, 1L, 2L });
+
+ fastMergerDecisionMaker = new FastMergerDecisionMaker("", appFS,
DEFAULT_BLOCK_SIZE);
+ }
+
+ /**
+ * If some block is missing then expect BlockNotFoundException.
+ *
+ * @throws IOException
+ * @throws BlockNotFoundException
+ */
+ @Test(expected = BlockNotFoundException.class)
+ public void testMissingBlock() throws IOException, BlockNotFoundException
+ {
+
+ when(appFS.exists(new Path("/0"))).thenReturn(true);
+ when(appFS.exists(new Path("/1"))).thenReturn(false);
+
+ when(status0.getReplication()).thenReturn(DEFAULT_REPLICATION[0]);
+ when(status0.getLen()).thenReturn(DEFAULT_BLOCK_SIZE);
+
+ when(appFS.getFileStatus(new Path("/0"))).thenReturn(status0);
+
+ fastMergerDecisionMaker.isFastMergePossible(fileMetadata);
+ fail("Failed when one block missing.");
+ }
+
+ private void initializeMocks(long[] blockSizes, short[] replication)
throws IOException, BlockNotFoundException
+ {
+ when(appFS.exists(Matchers.any(Path.class))).thenReturn(true);
--- End diff --
moved to @ Before method
> HDFS output module for file copy
> --------------------------------
>
> Key: APEXMALHAR-2013
> URL: https://issues.apache.org/jira/browse/APEXMALHAR-2013
> Project: Apache Apex Malhar
> Issue Type: Task
> Reporter: Yogi Devendra
> Assignee: Yogi Devendra
>
> To write files to HDFS using block-by-block approach.
> Main use-case being to copy the files. Thus, original sequence of blocks has
> to be maintained.
> To achieve this goal, this module would use information emitted by HDFS
> input module (APEXMALHAR-2008) viz. FileMetaData, BlockMetaData, BlockData.
>
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