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HDFS-10668. Fix intermittently failing UT TestDataNodeMXBean#testDataNodeMXBeanBlockCount. Contributed by Mingliang Liu.

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This commit is contained in:
Brahma Reddy Battula 2016-07-26 10:54:24 +05:30
parent 85a20508bd
commit 7cac7655fd
1 changed files with 15 additions and 5 deletions
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20
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMXBean.java
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@ -25,11 +25,13 @@
import javax.management.MBeanServer; import javax.management.MBeanServer;
import javax.management.ObjectName; import javax.management.ObjectName;
import com.google.common.base.Supplier;
import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path; import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSTestUtil; import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.MiniDFSCluster; import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.test.GenericTestUtils;
import org.junit.Assert; import org.junit.Assert;
import org.junit.Test; import org.junit.Test;
import org.mortbay.util.ajax.JSON; import org.mortbay.util.ajax.JSON;
@ -119,10 +121,18 @@ public void testDataNodeMXBeanBlockCount() throws Exception {
cluster.waitActive(); cluster.waitActive();
assertEquals("After restart DN", 5, getTotalNumBlocks(mbs, mxbeanName)); assertEquals("After restart DN", 5, getTotalNumBlocks(mbs, mxbeanName));
fs.delete(new Path("/tmp.txt1"), true); fs.delete(new Path("/tmp.txt1"), true);
// Wait till replica gets deleted on disk. // The total numBlocks should be updated after one file is deleted
Thread.sleep(5000); GenericTestUtils.waitFor(new Supplier<Boolean>() {
assertEquals("After delete one file", 4, @Override
getTotalNumBlocks(mbs, mxbeanName)); public Boolean get() {
try {
return getTotalNumBlocks(mbs, mxbeanName) == 4;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
}, 100, 30000);
} finally { } finally {
if (cluster != null) { if (cluster != null) {
cluster.shutdown(); cluster.shutdown();
@ -131,7 +141,7 @@ public void testDataNodeMXBeanBlockCount() throws Exception {
} }
@SuppressWarnings("unchecked") @SuppressWarnings("unchecked")
int getTotalNumBlocks(MBeanServer mbs, ObjectName mxbeanName) private int getTotalNumBlocks(MBeanServer mbs, ObjectName mxbeanName)
throws Exception { throws Exception {
int totalBlocks = 0; int totalBlocks = 0;
String volumeInfo = (String) mbs.getAttribute(mxbeanName, "VolumeInfo"); String volumeInfo = (String) mbs.getAttribute(mxbeanName, "VolumeInfo");