You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by st...@apache.org on 2012/08/30 07:30:23 UTC
svn commit: r1378806 - in
/hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver:
TestMultiVersionConsistencyControl.java TestReadWriteConsistencyControl.java
Author: stack
Date: Thu Aug 30 05:30:23 2012
New Revision: 1378806
URL: http://svn.apache.org/viewvc?rev=1378806&view=rev
Log:
HBASE-5042 TestReadWriteConsistencyControl should be renamed
Added:
hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestMultiVersionConsistencyControl.java
Removed:
hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestReadWriteConsistencyControl.java
Added: hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestMultiVersionConsistencyControl.java
URL: http://svn.apache.org/viewvc/hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestMultiVersionConsistencyControl.java?rev=1378806&view=auto
==============================================================================
--- hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestMultiVersionConsistencyControl.java (added)
+++ hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestMultiVersionConsistencyControl.java Thu Aug 30 05:30:23 2012
@@ -0,0 +1,134 @@
+/**
+ * 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;
+
+import junit.framework.TestCase;
+import org.apache.hadoop.hbase.SmallTests;
+import org.junit.experimental.categories.Category;
+
+import java.util.Random;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * This is a hammer test that verifies MultiVersionConsistencyControl in a
+ * multiple writer single reader scenario.
+ */
+@Category(SmallTests.class)
+public class TestMultiVersionConsistencyControl extends TestCase {
+ static class Writer implements Runnable {
+ final AtomicBoolean finished;
+ final MultiVersionConsistencyControl mvcc;
+ final AtomicBoolean status;
+
+ Writer(AtomicBoolean finished, MultiVersionConsistencyControl mvcc, AtomicBoolean status) {
+ this.finished = finished;
+ this.mvcc = mvcc;
+ this.status = status;
+ }
+
+ private Random rnd = new Random();
+ public boolean failed = false;
+
+ public void run() {
+ while (!finished.get()) {
+ MultiVersionConsistencyControl.WriteEntry e = mvcc.beginMemstoreInsert();
+ // System.out.println("Begin write: " + e.getWriteNumber());
+ // 10 usec - 500usec (including 0)
+ int sleepTime = rnd.nextInt(500);
+ // 500 * 1000 = 500,000ns = 500 usec
+ // 1 * 100 = 100ns = 1usec
+ try {
+ if (sleepTime > 0) Thread.sleep(0, sleepTime * 1000);
+ } catch (InterruptedException e1) {
+ }
+ try {
+ mvcc.completeMemstoreInsert(e);
+ } catch (RuntimeException ex) {
+ // got failure
+ System.out.println(ex.toString());
+ ex.printStackTrace();
+ status.set(false);
+ return;
+ // Report failure if possible.
+ }
+ }
+ }
+ }
+
+ public void testParallelism() throws Exception {
+ final MultiVersionConsistencyControl mvcc = new MultiVersionConsistencyControl();
+
+ final AtomicBoolean finished = new AtomicBoolean(false);
+
+ // fail flag for the reader thread
+ final AtomicBoolean readerFailed = new AtomicBoolean(false);
+ final AtomicLong failedAt = new AtomicLong();
+ Runnable reader = new Runnable() {
+ public void run() {
+ long prev = mvcc.memstoreReadPoint();
+ while (!finished.get()) {
+ long newPrev = mvcc.memstoreReadPoint();
+ if (newPrev < prev) {
+ // serious problem.
+ System.out.println("Reader got out of order, prev: " + prev + " next was: " + newPrev);
+ readerFailed.set(true);
+ // might as well give up
+ failedAt.set(newPrev);
+ return;
+ }
+ }
+ }
+ };
+
+ // writer thread parallelism.
+ int n = 20;
+ Thread[] writers = new Thread[n];
+ AtomicBoolean[] statuses = new AtomicBoolean[n];
+ Thread readThread = new Thread(reader);
+
+ for (int i = 0; i < n; ++i) {
+ statuses[i] = new AtomicBoolean(true);
+ writers[i] = new Thread(new Writer(finished, mvcc, statuses[i]));
+ writers[i].start();
+ }
+ readThread.start();
+
+ try {
+ Thread.sleep(10 * 1000);
+ } catch (InterruptedException ex) {
+ }
+
+ finished.set(true);
+
+ readThread.join();
+ for (int i = 0; i < n; ++i) {
+ writers[i].join();
+ }
+
+ // check failure.
+ assertFalse(readerFailed.get());
+ for (int i = 0; i < n; ++i) {
+ assertTrue(statuses[i].get());
+ }
+
+ }
+
+ @org.junit.Rule
+ public org.apache.hadoop.hbase.ResourceCheckerJUnitRule cu = new org.apache.hadoop.hbase.ResourceCheckerJUnitRule();
+}