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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2002,2010 Oracle. All rights reserved.
*
* $Id: SR12641.java,v 1.9.2.2 2010/01/04 15:30:43 cwl Exp $
*/
package com.sleepycat.je.dbi;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import junit.framework.TestCase;
import com.sleepycat.bind.tuple.IntegerBinding;
import com.sleepycat.je.Cursor;
import com.sleepycat.je.CursorConfig;
import com.sleepycat.je.Database;
import com.sleepycat.je.DatabaseConfig;
import com.sleepycat.je.DatabaseEntry;
import com.sleepycat.je.Environment;
import com.sleepycat.je.EnvironmentConfig;
import com.sleepycat.je.OperationStatus;
import com.sleepycat.je.config.EnvironmentParams;
import com.sleepycat.je.junit.JUnitThread;
import com.sleepycat.je.log.FileManager;
import com.sleepycat.je.util.TestUtils;
/**
* This reproduces the bug described SR [#12641], also related to SR [#9543].
*
* Note that allthough this is a JUnit test case, it is not run as part of the
* JUnit test suite. It takes a long time, and when it fails it hangs.
* Therefore, it was only used for debugging and is not intended to be a
* regression test.
*
* For some reason the bug was not reproducible with a simple main program,
* which is why a JUnit test was used.
*/
public class SR12641 extends TestCase {
/* Use small NODE_MAX to cause lots of splits. */
private static final int NODE_MAX = 6;
private File envHome;
private Environment env;
private Database db;
private boolean dups;
private boolean writerStopped;
public SR12641()
throws Exception {
envHome = new File(System.getProperty(TestUtils.DEST_DIR));
}
public void setUp()
throws Exception {
TestUtils.removeFiles("Setup", envHome, FileManager.JE_SUFFIX);
}
public void tearDown()
throws Exception {
if (env != null) {
try {
env.close();
} catch (Exception e) {
System.err.println("TearDown: " + e);
}
}
env = null;
db = null;
TestUtils.removeFiles("TearDown", envHome, FileManager.JE_SUFFIX);
}
public void testSplitsWithScansDups()
throws Throwable {
dups = true;
testSplitsWithScans();
}
public void testSplitsWithScans()
throws Throwable {
open();
/* Cause splits in the last BIN. */
JUnitThread writer = new JUnitThread("writer") {
public void testBody() {
try {
DatabaseEntry key = new DatabaseEntry(new byte[1]);
DatabaseEntry data = new DatabaseEntry(new byte[1]);
OperationStatus status;
Cursor cursor = db.openCursor(null, null);
for (int i = 0; i < 100000; i += 1) {
IntegerBinding.intToEntry(i, dups ? data : key);
if (dups) {
status = cursor.putNoDupData(key, data);
} else {
status = cursor.putNoOverwrite(key, data);
}
assertEquals(OperationStatus.SUCCESS, status);
if (i % 5000 == 0) {
System.out.println("Iteration: " + i);
}
}
cursor.close();
writerStopped = true;
} catch (Exception e) {
try {
FileOutputStream os =
new FileOutputStream(new File("./err.txt"));
e.printStackTrace(new PrintStream(os));
os.close();
} catch (IOException ignored) {}
System.exit(1);
}
}
};
/* Move repeatedly from the last BIN to the prior BIN. */
JUnitThread reader = new JUnitThread("reader") {
public void testBody() {
try {
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
CursorConfig cursorConfig = new CursorConfig();
cursorConfig.setReadUncommitted(true);
Cursor cursor = db.openCursor(null, cursorConfig);
while (!writerStopped) {
cursor.getLast(key, data, null);
for (int i = 0; i <= NODE_MAX; i += 1) {
cursor.getPrev(key, data, null);
}
}
cursor.close();
} catch (Exception e) {
try {
FileOutputStream os =
new FileOutputStream(new File("./err.txt"));
e.printStackTrace(new PrintStream(os));
os.close();
} catch (IOException ignored) {}
System.exit(1);
}
}
};
writer.start();
reader.start();
writer.finishTest();
reader.finishTest();
close();
System.out.println("SUCCESS");
}
private void open()
throws Exception {
EnvironmentConfig envConfig = TestUtils.initEnvConfig();
envConfig.setConfigParam
(EnvironmentParams.NODE_MAX.getName(), String.valueOf(NODE_MAX));
envConfig.setAllowCreate(true);
env = new Environment(envHome, envConfig);
DatabaseConfig dbConfig = new DatabaseConfig();
dbConfig.setAllowCreate(true);
dbConfig.setExclusiveCreate(true);
dbConfig.setSortedDuplicates(dups);
db = env.openDatabase(null, "testDb", dbConfig);
}
private void close()
throws Exception {
db.close();
db = null;
env.close();
env = null;
}
}
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