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HDFS-12371. BlockVerificationFailures and BlocksVerified show up as 0 in Datanode JMX. Contributed by Hanisha Koneru.

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(cherry picked from commit 6bf921a5c3152a307b5c0903056d73ce07775a08)
This commit is contained in:
Kihwal Lee 2017-09-21 09:00:26 -05:00
parent 4ac3fc10c2
commit c0bb242360
1 changed files with 6 additions and 0 deletions
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6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/VolumeScanner.java
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@ -37,6 +37,7 @@
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeReference;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi.BlockIterator;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.datanode.metrics.DataNodeMetrics;
import org.apache.hadoop.hdfs.util.DataTransferThrottler;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.util.Time;
@ -81,6 +82,8 @@ void setConf(Conf conf) {
*/
private final DataNode datanode;
private final DataNodeMetrics metrics;
/**
* A reference to the volume that we're scanning.
*/
@ -300,6 +303,7 @@ public void handle(ExtendedBlock block, IOException e) {
VolumeScanner(Conf conf, DataNode datanode, FsVolumeReference ref) {
this.conf = conf;
this.datanode = datanode;
this.metrics = datanode.getMetrics();
this.ref = ref;
this.volume = ref.getVolume();
ScanResultHandler handler;
@ -444,12 +448,14 @@ private long scanBlock(ExtendedBlock cblock, long bytesPerSec) {
throttler.setBandwidth(bytesPerSec);
long bytesRead = blockSender.sendBlock(nullStream, null, throttler);
resultHandler.handle(block, null);
metrics.incrBlocksVerified();
return bytesRead;
} catch (IOException e) {
resultHandler.handle(block, e);
} finally {
IOUtils.cleanup(null, blockSender);
}
metrics.incrBlockVerificationFailures();
return -1;
}