svn commit: r965670 - /hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestHLogMethods.java

[st...@apache.org]

Author: stack
Date: Mon Jul 19 22:58:48 2010
New Revision: 965670

URL: http://svn.apache.org/viewvc?rev=965670&view=rev
Log:
HBASE-2727 Splits writing one file only is untenable; need dir of recovered edits ordered by sequenceid (Forgot to add a test)

Added:
    hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestHLogMethods.java

Added: hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestHLogMethods.java
URL: http://svn.apache.org/viewvc/hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestHLogMethods.java?rev=965670&view=auto
==============================================================================
--- hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestHLogMethods.java (added)
+++ hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestHLogMethods.java Mon Jul 19 22:58:48 2010
@@ -0,0 +1,81 @@
+/**
+ * Copyright 2010 The Apache Software Foundation
+ *
+ * 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 org.apache.hadoop.hbase.regionserver.wal;
+
+import static org.junit.Assert.*;
+
+import java.io.IOException;
+import java.util.NavigableSet;
+
+import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.junit.Test;
+
+/**
+ * Simple testing of a few HLog methods.
+ */
+public class TestHLogMethods {
+  private final HBaseTestingUtility util = new HBaseTestingUtility();
+
+  /**
+   * Assert that getSplitEditFilesSorted returns files in expected order and
+   * that it skips moved-aside files.
+   * @throws IOException
+   */
+  @Test public void testGetSplitEditFilesSorted() throws IOException {
+    FileSystem fs = FileSystem.get(util.getConfiguration());
+    Path regiondir = HBaseTestingUtility.getTestDir("regiondir");
+    fs.delete(regiondir, true);
+    fs.mkdirs(regiondir);
+    Path recoverededits = HLog.getRegionDirRecoveredEditsDir(regiondir);
+    String first = HLog.formatRecoveredEditsFileName(-1);
+    createFile(fs, recoverededits, first);
+    createFile(fs, recoverededits, HLog.formatRecoveredEditsFileName(0));
+    createFile(fs, recoverededits, HLog.formatRecoveredEditsFileName(1));
+    createFile(fs, recoverededits, HLog.formatRecoveredEditsFileName(11));
+    createFile(fs, recoverededits, HLog.formatRecoveredEditsFileName(2));
+    createFile(fs, recoverededits, HLog.formatRecoveredEditsFileName(50));
+    String last = HLog.formatRecoveredEditsFileName(Long.MAX_VALUE);
+    createFile(fs, recoverededits, last);
+    createFile(fs, recoverededits,
+      Long.toString(Long.MAX_VALUE) + "." + System.currentTimeMillis());
+    NavigableSet<Path> files = HLog.getSplitEditFilesSorted(fs, regiondir);
+    assertEquals(7, files.size());
+    assertEquals(files.pollFirst().getName(), first);
+    assertEquals(files.pollLast().getName(), last);
+    assertEquals(files.pollFirst().getName(),
+      HLog.formatRecoveredEditsFileName(0));
+    assertEquals(files.pollFirst().getName(),
+      HLog.formatRecoveredEditsFileName(1));
+    assertEquals(files.pollFirst().getName(),
+      HLog.formatRecoveredEditsFileName(2));
+    assertEquals(files.pollFirst().getName(),
+      HLog.formatRecoveredEditsFileName(11));
+  }
+
+  private void createFile(final FileSystem fs, final Path testdir,
+      final String name)
+  throws IOException {
+    FSDataOutputStream fdos = fs.create(new Path(testdir, name), true);
+    fdos.close();
+  }
+}
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