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HADOOP-12706. TestLocalFsFCStatistics#testStatisticsThreadLocalDataCleanUp times out occasionally. Contributed by Sangjin Lee and Colin Patrick McCabe 

(cherry picked from commit cdf8895259)
This commit is contained in:
Jason Lowe 2016-01-14 23:45:03 +00:00
parent fe77cb1df0
commit 4ab508ead4
2 changed files with 22 additions and 5 deletions
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6
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -967,6 +967,9 @@ Release 2.7.3 - UNRELEASED
HADOOP-12107. long running apps may have a huge number of StatisticsData HADOOP-12107. long running apps may have a huge number of StatisticsData
instances under FileSystem (Sangjin Lee via Ming Ma) instances under FileSystem (Sangjin Lee via Ming Ma)
HADOOP-12706. TestLocalFsFCStatistics#testStatisticsThreadLocalDataCleanUp
times out occasionally (Sangjin Lee and Colin Patrick McCabe via jlowe)
Release 2.7.2 - UNRELEASED Release 2.7.2 - UNRELEASED
INCOMPATIBLE CHANGES INCOMPATIBLE CHANGES
@ -1791,6 +1794,9 @@ Release 2.6.4 - UNRELEASED
HADOOP-12107. long running apps may have a huge number of StatisticsData HADOOP-12107. long running apps may have a huge number of StatisticsData
instances under FileSystem (Sangjin Lee via Ming Ma) instances under FileSystem (Sangjin Lee via Ming Ma)
HADOOP-12706. TestLocalFsFCStatistics#testStatisticsThreadLocalDataCleanUp
times out occasionally (Sangjin Lee and Colin Patrick McCabe via jlowe)
Release 2.6.3 - 2015-12-17 Release 2.6.3 - 2015-12-17
INCOMPATIBLE CHANGES INCOMPATIBLE CHANGES

21
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/FCStatisticsBaseTest.java
View File

@ -32,6 +32,8 @@ import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit; import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger; import java.util.concurrent.atomic.AtomicInteger;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FileSystem.Statistics; import org.apache.hadoop.fs.FileSystem.Statistics;
import org.apache.hadoop.test.GenericTestUtils; import org.apache.hadoop.test.GenericTestUtils;
import org.junit.Assert; import org.junit.Assert;
@ -46,6 +48,8 @@ import com.google.common.util.concurrent.Uninterruptibles;
* </p> * </p>
*/ */
public abstract class FCStatisticsBaseTest { public abstract class FCStatisticsBaseTest {
private static final Log LOG = LogFactory.getLog(FCStatisticsBaseTest.class);
static protected int blockSize = 512; static protected int blockSize = 512;
static protected int numBlocks = 1; static protected int numBlocks = 1;
@ -110,7 +114,7 @@ public abstract class FCStatisticsBaseTest {
fc.delete(filePath, true); fc.delete(filePath, true);
} }
@Test(timeout=60000) @Test(timeout=70000)
public void testStatisticsThreadLocalDataCleanUp() throws Exception { public void testStatisticsThreadLocalDataCleanUp() throws Exception {
final Statistics stats = new Statistics("test"); final Statistics stats = new Statistics("test");
// create a small thread pool to test the statistics // create a small thread pool to test the statistics
@ -137,17 +141,24 @@ public abstract class FCStatisticsBaseTest {
es.shutdownNow(); es.shutdownNow();
es.awaitTermination(1, TimeUnit.MINUTES); es.awaitTermination(1, TimeUnit.MINUTES);
es = null; es = null;
System.gc(); System.gc(); // force GC to garbage collect threads
// wait for up to 10 seconds // wait for up to 60 seconds
GenericTestUtils.waitFor(new Supplier<Boolean>() { GenericTestUtils.waitFor(new Supplier<Boolean>() {
@Override @Override
public Boolean get() { public Boolean get() {
int size = stats.getAllThreadLocalDataSize(); int size = stats.getAllThreadLocalDataSize();
allDataSize.set(size); allDataSize.set(size);
return size == 0; if (size == 0) {
return true;
} }
}, 1000, 10*1000); LOG.warn("not all references have been cleaned up; still " +
allDataSize.get() + " references left");
LOG.warn("triggering another GC");
System.gc();
return false;
}
}, 500, 60*1000);
Assert.assertEquals(0, allDataSize.get()); Assert.assertEquals(0, allDataSize.get());
Assert.assertEquals(size, stats.getReadOps()); Assert.assertEquals(size, stats.getReadOps());
} }