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HADOOP-15549. Upgrade to commons-configuration 2.1 regresses task CPU consumption. 

Contributed by Todd Lipcon.

(cherry picked from commit 1f21be2d02)
This commit is contained in:
Todd Lipcon 2019-02-05 19:57:08 +00:00 committed by Steve Loughran
parent 875b8c390b
commit 02cfd5fa35
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1 changed files with 6 additions and 9 deletions
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15
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MetricsConfig.java
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@ -37,10 +37,8 @@ import com.google.common.collect.Maps;
import org.apache.commons.configuration2.Configuration;
import org.apache.commons.configuration2.PropertiesConfiguration;
import org.apache.commons.configuration2.SubsetConfiguration;
import org.apache.commons.configuration2.builder.fluent.Configurations;
import org.apache.commons.configuration2.builder.fluent.Parameters;
import org.apache.commons.configuration2.convert.DefaultListDelimiterHandler;
import org.apache.commons.configuration2.ex.ConfigurationException;
import org.apache.commons.configuration2.io.FileHandler;
import org.apache.hadoop.metrics2.MetricsFilter;
import org.apache.hadoop.metrics2.MetricsPlugin;
import org.apache.hadoop.metrics2.filter.GlobFilter;
@ -112,12 +110,11 @@ class MetricsConfig extends SubsetConfiguration {
static MetricsConfig loadFirst(String prefix, String... fileNames) {
for (String fname : fileNames) {
try {
Configuration cf = new Configurations().propertiesBuilder(fname)
.configure(new Parameters().properties()
.setFileName(fname)
.setListDelimiterHandler(new DefaultListDelimiterHandler(',')))
.getConfiguration()
.interpolatedConfiguration();
PropertiesConfiguration pcf = new PropertiesConfiguration();
FileHandler fh = new FileHandler(pcf);
fh.setFileName(fname);
fh.load();
Configuration cf = pcf.interpolatedConfiguration();
LOG.info("loaded properties from "+ fname);
LOG.debug(toString(cf));
MetricsConfig mc = new MetricsConfig(cf, prefix);