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HDFS-16231. Fix TestDataNodeMetrics#testReceivePacketSlowMetrics (#3471)

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huhaiyang 2021-09-28 13:09:18 +08:00 committed by GitHub
parent 02993bc11e
commit 1f8f53f7d7
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1 changed files with 15 additions and 6 deletions
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hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMetrics.java
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@ -169,6 +169,7 @@ public class TestDataNodeMetrics {
conf.setInt(DFSConfigKeys.DFS_METRICS_PERCENTILES_INTERVALS_KEY, interval);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(3).build();
DataNodeFaultInjector oldInjector = DataNodeFaultInjector.get();
try {
cluster.waitActive();
DistributedFileSystem fs = cluster.getFileSystem();
@ -190,22 +191,30 @@ public class TestDataNodeMetrics {
DataNodeFaultInjector.set(injector);
Path testFile = new Path("/testFlushNanosMetric.txt");
FSDataOutputStream fout = fs.create(testFile);
DFSOutputStream dout = (DFSOutputStream) fout.getWrappedStream();
fout.write(new byte[1]);
fout.hsync();
DatanodeInfo[] pipeline = dout.getPipeline();
fout.close();
dout.close();
DatanodeInfo headDatanodeInfo = pipeline[0];
List<DataNode> datanodes = cluster.getDataNodes();
DataNode datanode = datanodes.get(0);
MetricsRecordBuilder dnMetrics = getMetrics(datanode.getMetrics().name());
DataNode headNode = datanodes.stream().filter(d -> d.getDatanodeId().equals(headDatanodeInfo))
.findFirst().orElseGet(null);
assertNotNull("Could not find the head of the datanode write pipeline",
headNode);
MetricsRecordBuilder dnMetrics = getMetrics(headNode.getMetrics().name());
assertTrue("More than 1 packet received",
getLongCounter("TotalPacketsReceived", dnMetrics) > 1L);
getLongCounter("PacketsReceived", dnMetrics) > 1L);
assertTrue("More than 1 slow packet to mirror",
getLongCounter("TotalPacketsSlowWriteToMirror", dnMetrics) > 1L);
assertCounter("TotalPacketsSlowWriteToDisk", 1L, dnMetrics);
assertCounter("TotalPacketsSlowWriteToOsCache", 0L, dnMetrics);
getLongCounter("PacketsSlowWriteToMirror", dnMetrics) > 1L);
assertCounter("PacketsSlowWriteToDisk", 1L, dnMetrics);
assertCounter("PacketsSlowWriteToOsCache", 0L, dnMetrics);
} finally {
if (cluster != null) {
cluster.shutdown();
}
DataNodeFaultInjector.set(oldInjector);
}
}