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HDFS-16337. Show start time of Datanode on Web (#3682) 

Reviewed-by: Inigo Goiri <inigoiri@apache.org>
(cherry picked from commit 0ed817babb)
This commit is contained in:
litao 2021-11-23 10:18:30 +08:00 committed by Wei-Chiu Chuang
parent cbb3ba135c
commit d746e2cdd8
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4 changed files with 19 additions and 0 deletions
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8
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
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@ -50,6 +50,7 @@ import static org.apache.hadoop.hdfs.protocol.datatransfer.BlockConstructionStag
import static org.apache.hadoop.hdfs.protocol.datatransfer.BlockConstructionStage.PIPELINE_SETUP_CREATE;
import static org.apache.hadoop.hdfs.protocol.datatransfer.BlockConstructionStage.PIPELINE_SETUP_STREAMING_RECOVERY;
import static org.apache.hadoop.util.ExitUtil.terminate;
import static org.apache.hadoop.util.Time.now;
import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
import org.apache.hadoop.hdfs.protocol.proto.ReconfigurationProtocolProtos.ReconfigurationProtocolService;
@ -415,6 +416,8 @@ public class DataNode extends ReconfigurableBase
private ScheduledThreadPoolExecutor metricsLoggerTimer;
private final long startTime = now();
/**
* Creates a dummy DataNode for testing purpose.
*/
@ -3109,6 +3112,11 @@ public class DataNode extends ReconfigurableBase
return this.getConf().get("dfs.datanode.info.port");
}
@Override // DataNodeMXBean
public long getDNStartedTimeInMillis() {
return this.startTime;
}
public String getRevision() {
return VersionInfo.getRevision();
}

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNodeMXBean.java
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@ -157,4 +157,11 @@ public interface DataNodeMXBean {
* @return true, if security is enabled.
*/
boolean isSecurityEnabled();
/**
* Get the start time of the DataNode.
*
* @return Start time of the DataNode.
*/
long getDNStartedTimeInMillis();
}

1
hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/datanode/datanode.html
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@ -71,6 +71,7 @@
<div class="page-header"><h1>DataNode on <small>{HostName}:{DataPort}</small></h1></div>
<table class="table table-bordered table-striped">
<tr><th>Cluster ID:</th><td>{ClusterId}</td></tr>
<tr><th>Started:</th><td>{DNStartedTimeInMillis|date_tostring}</td></tr>
<tr><th>Version:</th><td>{Version}</td></tr>
</table>
{/dn}

3
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMXBean.java
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@ -75,6 +75,9 @@ public class TestDataNodeMXBean extends SaslDataTransferTestCase {
// get attribute "Version"
String version = (String)mbs.getAttribute(mxbeanName, "Version");
Assert.assertEquals(datanode.getVersion(),version);
// get attribute "DNStartedTimeInMillis"
long startTime = (long) mbs.getAttribute(mxbeanName, "DNStartedTimeInMillis");
Assert.assertEquals(datanode.getDNStartedTimeInMillis(), startTime);
// get attribute "SotfwareVersion"
String softwareVersion =
(String)mbs.getAttribute(mxbeanName, "SoftwareVersion");