HADOOP-15549. Upgrade to commons-configuration 2.1 regresses task CPU consumption
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@ -37,10 +37,8 @@ import com.google.common.collect.Maps;
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import org.apache.commons.configuration2.Configuration;
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import org.apache.commons.configuration2.PropertiesConfiguration;
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import org.apache.commons.configuration2.SubsetConfiguration;
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import org.apache.commons.configuration2.builder.fluent.Configurations;
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import org.apache.commons.configuration2.builder.fluent.Parameters;
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import org.apache.commons.configuration2.convert.DefaultListDelimiterHandler;
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import org.apache.commons.configuration2.ex.ConfigurationException;
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import org.apache.commons.configuration2.io.FileHandler;
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import org.apache.hadoop.metrics2.MetricsFilter;
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import org.apache.hadoop.metrics2.MetricsPlugin;
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import org.apache.hadoop.metrics2.filter.GlobFilter;
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@ -112,12 +110,11 @@ class MetricsConfig extends SubsetConfiguration {
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static MetricsConfig loadFirst(String prefix, String... fileNames) {
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for (String fname : fileNames) {
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try {
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Configuration cf = new Configurations().propertiesBuilder(fname)
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.configure(new Parameters().properties()
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.setFileName(fname)
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.setListDelimiterHandler(new DefaultListDelimiterHandler(',')))
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.getConfiguration()
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.interpolatedConfiguration();
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PropertiesConfiguration pcf = new PropertiesConfiguration();
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FileHandler fh = new FileHandler(pcf);
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fh.setFileName(fname);
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fh.load();
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Configuration cf = pcf.interpolatedConfiguration();
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LOG.info("Loaded properties from {}", fname);
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if (LOG.isDebugEnabled()) {
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LOG.debug("Properties: {}", toString(cf));
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