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HDFS-17471. Correct the percentage of sample range. (#6742). Contributed by fuchaohong.

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Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
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fuchaohong 2024-04-30 12:18:47 +08:00 committed by GitHub
parent 78987a71a6
commit ddb805951e
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2 changed files with 2 additions and 2 deletions
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2
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/metrics/BlockReaderIoProvider.java
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@ -65,7 +65,7 @@ public BlockReaderIoProvider(@Nullable ShortCircuitConf conf,
public int read(FileChannel dataIn, ByteBuffer dst, long position) public int read(FileChannel dataIn, ByteBuffer dst, long position)
throws IOException{ throws IOException{
final int nRead; final int nRead;
if (isEnabled && (ThreadLocalRandom.current().nextInt() < sampleRangeMax)) { if (isEnabled && (ThreadLocalRandom.current().nextInt(Integer.MAX_VALUE) < sampleRangeMax)) {
long begin = timer.monotonicNow(); long begin = timer.monotonicNow();
nRead = dataIn.read(dst, position); nRead = dataIn.read(dst, position);
long latency = timer.monotonicNow() - begin; long latency = timer.monotonicNow() - begin;

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java
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@ -80,7 +80,7 @@ public void afterMetadataOp(@Nullable FsVolumeSpi volume,
public long beforeFileIo(@Nullable FsVolumeSpi volume, public long beforeFileIo(@Nullable FsVolumeSpi volume,
FileIoProvider.OPERATION op, long len) { FileIoProvider.OPERATION op, long len) {
if (isEnabled && ThreadLocalRandom.current().nextInt() < sampleRangeMax) { if (isEnabled && ThreadLocalRandom.current().nextInt(Integer.MAX_VALUE) < sampleRangeMax) {
DataNodeVolumeMetrics metrics = getVolumeMetrics(volume); DataNodeVolumeMetrics metrics = getVolumeMetrics(volume);
if (metrics != null) { if (metrics != null) {
return Time.monotonicNow(); return Time.monotonicNow();