HDFS-11477. Simplify file IO profiling configuration. Contributed by Hanisha Koneru.
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/959940b0 Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/959940b0 Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/959940b0 Branch: refs/heads/YARN-5734 Commit: 959940b0ab563b4e42bace44f1dc9a8babcaa889 Parents: f597f4c Author: Arpit Agarwal <a...@apache.org> Authored: Tue Mar 7 10:12:35 2017 -0800 Committer: Arpit Agarwal <a...@apache.org> Committed: Tue Mar 7 10:12:35 2017 -0800 ---------------------------------------------------------------------- .../hadoop-common/src/site/markdown/Metrics.md | 7 ++++++- .../java/org/apache/hadoop/hdfs/DFSConfigKeys.java | 6 +----- .../org/apache/hadoop/hdfs/server/common/Util.java | 17 +++++++++++++++++ .../apache/hadoop/hdfs/server/datanode/DNConf.java | 7 ++++--- .../hdfs/server/datanode/FileIoProvider.java | 2 +- .../server/datanode/ProfilingFileIoEvents.java | 11 +++++------ .../server/datanode/TestDataNodeVolumeMetrics.java | 4 ++-- .../apache/hadoop/tools/TestHdfsConfigFields.java | 2 -- 8 files changed, 36 insertions(+), 20 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/959940b0/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md b/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md index 7900692..a8bdbeb 100644 --- a/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md +++ b/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md @@ -332,7 +332,12 @@ Each metrics record contains tags such as SessionId and Hostname as additional i FsVolume -------- -Per-volume metrics contain Datanode Volume IO related statistics. Per-volume metrics are off by default. They can be enbabled by setting `dfs.datanode.enable.fileio.profiling` to **true**, but enabling per-volume metrics may have a performance impact. Each metrics record contains tags such as Hostname as additional information along with metrics. +Per-volume metrics contain Datanode Volume IO related statistics. Per-volume +metrics are off by default. They can be enabled by setting `dfs.datanode +.fileio.profiling.sampling.fraction` to a fraction between 0.0 and 1.0. +Setting this value to 0.0 would mean profiling is not enabled. But enabling +per-volume metrics may have a performance impact. Each metrics record +contains tags such as Hostname as additional information along with metrics. | Name | Description | |:---- |:---- | http://git-wip-us.apache.org/repos/asf/hadoop/blob/959940b0/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java index be20829..82d6073 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java @@ -718,10 +718,6 @@ public class DFSConfigKeys extends CommonConfigurationKeys { public static final long DFS_EDIT_LOG_TRANSFER_RATE_DEFAULT = 0; //no throttling // Datanode File IO Stats - public static final String DFS_DATANODE_ENABLE_FILEIO_PROFILING_KEY = - "dfs.datanode.enable.fileio.profiling"; - public static final boolean DFS_DATANODE_ENABLE_FILEIO_PROFILING_DEFAULT = - false; public static final String DFS_DATANODE_ENABLE_FILEIO_FAULT_INJECTION_KEY = "dfs.datanode.enable.fileio.fault.injection"; public static final boolean @@ -730,7 +726,7 @@ public class DFSConfigKeys extends CommonConfigurationKeys { DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY = "dfs.datanode.fileio.profiling.sampling.fraction"; public static final double - DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_DEAFULT = 1.0; + DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_DEFAULT = 0.0; //Keys with no defaults public static final String DFS_DATANODE_PLUGINS_KEY = "dfs.datanode.plugins"; http://git-wip-us.apache.org/repos/asf/hadoop/blob/959940b0/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/Util.java ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/Util.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/Util.java index 9c67f0a..fdb09df 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/Util.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/Util.java @@ -388,4 +388,21 @@ public final class Util { addrsList.removeAll(addrsToExclude); return addrsList; } + + public static boolean isDiskStatsEnabled(double fileIOSamplingFraction) { + final boolean isEnabled; + if (fileIOSamplingFraction < 0.000001) { + LOG.info(DFSConfigKeys + .DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY + " set to " + + fileIOSamplingFraction + ". Disabling file IO profiling"); + isEnabled = false; + } else { + LOG.info(DFSConfigKeys + .DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY + " set to " + + fileIOSamplingFraction + ". Enabling file IO profiling"); + isEnabled = true; + } + + return isEnabled; + } } http://git-wip-us.apache.org/repos/asf/hadoop/blob/959940b0/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DNConf.java ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DNConf.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DNConf.java index 3275ba8..21ffccc 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DNConf.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DNConf.java @@ -63,6 +63,7 @@ import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys; import org.apache.hadoop.hdfs.protocol.HdfsConstants; import org.apache.hadoop.hdfs.protocol.datatransfer.TrustedChannelResolver; import org.apache.hadoop.hdfs.protocol.datatransfer.sasl.DataTransferSaslUtil; +import org.apache.hadoop.hdfs.server.common.Util; import org.apache.hadoop.security.SaslPropertiesResolver; import java.util.concurrent.TimeUnit; @@ -174,9 +175,9 @@ public class DNConf { this.peerStatsEnabled = getConf().getBoolean( DFSConfigKeys.DFS_DATANODE_PEER_STATS_ENABLED_KEY, DFSConfigKeys.DFS_DATANODE_PEER_STATS_ENABLED_DEFAULT); - this.diskStatsEnabled = getConf().getBoolean( - DFSConfigKeys.DFS_DATANODE_ENABLE_FILEIO_PROFILING_KEY, - DFSConfigKeys.DFS_DATANODE_ENABLE_FILEIO_PROFILING_DEFAULT); + this.diskStatsEnabled = Util.isDiskStatsEnabled(getConf().getDouble( + DFSConfigKeys.DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY, + DFSConfigKeys.DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_DEFAULT)); this.outliersReportIntervalMs = getConf().getTimeDuration( DFS_DATANODE_OUTLIERS_REPORT_INTERVAL_KEY, DFS_DATANODE_OUTLIERS_REPORT_INTERVAL_DEFAULT, http://git-wip-us.apache.org/repos/asf/hadoop/blob/959940b0/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FileIoProvider.java ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FileIoProvider.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FileIoProvider.java index 9def2e1..5508e0b 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FileIoProvider.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FileIoProvider.java @@ -62,7 +62,7 @@ import static org.apache.hadoop.hdfs.server.datanode.FileIoProvider.OPERATION.*; * * Behavior can be injected into these events by enabling the * profiling and/or fault injection event hooks through - * {@link DFSConfigKeys#DFS_DATANODE_ENABLE_FILEIO_PROFILING_KEY} and + * {@link DFSConfigKeys#DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY} and * {@link DFSConfigKeys#DFS_DATANODE_ENABLE_FILEIO_FAULT_INJECTION_KEY}. * These event hooks are disabled by default. * http://git-wip-us.apache.org/repos/asf/hadoop/blob/959940b0/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java index 9af84fa..35118b2 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProfilingFileIoEvents.java @@ -23,6 +23,7 @@ import org.apache.commons.logging.LogFactory; import org.apache.hadoop.classification.InterfaceAudience; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hdfs.DFSConfigKeys; +import org.apache.hadoop.hdfs.server.common.Util; import org.apache.hadoop.hdfs.server.datanode.fsdataset.DataNodeVolumeMetrics; import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi; import org.apache.hadoop.util.Time; @@ -43,13 +44,11 @@ class ProfilingFileIoEvents { public ProfilingFileIoEvents(@Nullable Configuration conf) { if (conf != null) { - isEnabled = conf.getBoolean(DFSConfigKeys - .DFS_DATANODE_ENABLE_FILEIO_PROFILING_KEY, DFSConfigKeys - .DFS_DATANODE_ENABLE_FILEIO_PROFILING_DEFAULT); - double fileIOSamplingFraction = conf.getDouble(DFSConfigKeys - .DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY, + double fileIOSamplingFraction = conf.getDouble( + DFSConfigKeys.DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY, DFSConfigKeys - .DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_DEAFULT); + .DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_DEFAULT); + isEnabled = Util.isDiskStatsEnabled(fileIOSamplingFraction); if (fileIOSamplingFraction > 1) { LOG.warn(DFSConfigKeys .DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY + http://git-wip-us.apache.org/repos/asf/hadoop/blob/959940b0/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java index 6a8ac9c..03e1dee 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeMetrics.java @@ -121,8 +121,8 @@ public class TestDataNodeVolumeMetrics { private MiniDFSCluster setupClusterForVolumeMetrics() throws IOException { Configuration conf = new HdfsConfiguration(); - conf.setBoolean(DFSConfigKeys - .DFS_DATANODE_ENABLE_FILEIO_PROFILING_KEY, true); + conf.setDouble(DFSConfigKeys + .DFS_DATANODE_FILEIO_PROFILING_SAMPLING_FRACTION_KEY, 1.0); SimulatedFSDataset.setFactory(conf); return new MiniDFSCluster.Builder(conf) .numDataNodes(NUM_DATANODES) http://git-wip-us.apache.org/repos/asf/hadoop/blob/959940b0/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestHdfsConfigFields.java ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestHdfsConfigFields.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestHdfsConfigFields.java index cdce342..1fdf713 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestHdfsConfigFields.java +++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestHdfsConfigFields.java @@ -103,8 +103,6 @@ public class TestHdfsConfigFields extends TestConfigurationFieldsBase { .add(DFSConfigKeys.DFS_DATANODE_STARTUP_KEY); configurationPropsToSkipCompare .add(DFSConfigKeys.DFS_NAMENODE_STARTUP_KEY); - configurationPropsToSkipCompare - .add(DFSConfigKeys.DFS_DATANODE_ENABLE_FILEIO_PROFILING_KEY); configurationPropsToSkipCompare.add(DFSConfigKeys .DFS_DATANODE_ENABLE_FILEIO_FAULT_INJECTION_KEY); configurationPropsToSkipCompare.add(DFSConfigKeys --------------------------------------------------------------------- To unsubscribe, e-mail: common-commits-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-commits-h...@hadoop.apache.org
