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| 91 | org.apache.hadoop.metrics.util</FONT> |
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| 92 | <BR> |
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| 93 | Class MetricsTimeVaryingRate</H2> |
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| 94 | <PRE> |
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| 95 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A> |
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| 96 | <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html" title="class in org.apache.hadoop.metrics.util">org.apache.hadoop.metrics.util.MetricsBase</A> |
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| 97 | <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.metrics.util.MetricsTimeVaryingRate</B> |
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| 98 | </PRE> |
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| 99 | <HR> |
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| 100 | <DL> |
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| 101 | <DT><PRE>public class <B>MetricsTimeVaryingRate</B><DT>extends <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html" title="class in org.apache.hadoop.metrics.util">MetricsBase</A></DL> |
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| 102 | </PRE> |
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| 103 | |
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| 104 | <P> |
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| 105 | The MetricsTimeVaryingRate class is for a rate based metric that |
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| 106 | naturally varies over time (e.g. time taken to create a file). |
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| 107 | The rate is averaged at each interval heart beat (the interval |
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| 108 | is set in the metrics config file). |
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| 109 | This class also keeps track of the min and max rates along with |
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| 110 | a method to reset the min-max. |
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| 111 | <P> |
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| 112 | |
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| 113 | <P> |
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| 114 | <HR> |
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| 117 | <!-- =========== FIELD SUMMARY =========== --> |
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| 123 | <B>Field Summary</B></FONT></TH> |
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| 124 | </TR> |
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| 125 | </TABLE> |
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| 126 | <A NAME="fields_inherited_from_class_org.apache.hadoop.metrics.util.MetricsBase"><!-- --></A> |
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| 127 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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| 128 | <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
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| 129 | <TH ALIGN="left"><B>Fields inherited from class org.apache.hadoop.metrics.util.<A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html" title="class in org.apache.hadoop.metrics.util">MetricsBase</A></B></TH> |
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| 130 | </TR> |
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| 131 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 132 | <TD><CODE><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html#NO_DESCRIPTION">NO_DESCRIPTION</A></CODE></TD> |
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| 136 | <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| 141 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
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| 142 | <B>Constructor Summary</B></FONT></TH> |
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| 143 | </TR> |
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| 144 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 145 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#MetricsTimeVaryingRate(java.lang.String, org.apache.hadoop.metrics.util.MetricsRegistry)">MetricsTimeVaryingRate</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> nam, |
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| 146 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsRegistry.html" title="class in org.apache.hadoop.metrics.util">MetricsRegistry</A> registry)</CODE> |
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| 147 | |
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| 148 | <BR> |
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| 149 | Constructor - create a new metric</TD> |
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| 150 | </TR> |
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| 151 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 152 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#MetricsTimeVaryingRate(java.lang.String, org.apache.hadoop.metrics.util.MetricsRegistry, java.lang.String)">MetricsTimeVaryingRate</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> nam, |
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| 153 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsRegistry.html" title="class in org.apache.hadoop.metrics.util">MetricsRegistry</A> registry, |
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| 154 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> description)</CODE> |
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| 155 | |
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| 156 | <BR> |
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| 157 | Constructor - create a new metric</TD> |
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| 158 | </TR> |
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| 159 | </TABLE> |
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| 160 | |
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| 161 | <!-- ========== METHOD SUMMARY =========== --> |
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| 162 | |
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| 167 | <B>Method Summary</B></FONT></TH> |
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| 168 | </TR> |
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| 169 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 170 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 171 | <CODE> long</CODE></FONT></TD> |
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| 172 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#getMaxTime()">getMaxTime</A></B>()</CODE> |
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| 173 | |
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| 174 | <BR> |
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| 175 | The max time for a single operation since the last reset |
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| 176 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#resetMinMax()"><CODE>resetMinMax()</CODE></A></TD> |
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| 177 | </TR> |
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| 178 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 179 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 180 | <CODE> long</CODE></FONT></TD> |
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| 181 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#getMinTime()">getMinTime</A></B>()</CODE> |
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| 182 | |
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| 183 | <BR> |
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| 184 | The min time for a single operation since the last reset |
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| 185 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#resetMinMax()"><CODE>resetMinMax()</CODE></A></TD> |
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| 186 | </TR> |
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| 187 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 188 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 189 | <CODE> long</CODE></FONT></TD> |
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| 190 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#getPreviousIntervalAverageTime()">getPreviousIntervalAverageTime</A></B>()</CODE> |
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| 191 | |
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| 192 | <BR> |
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| 193 | The average rate of an operation in the previous interval</TD> |
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| 194 | </TR> |
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| 195 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 196 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 197 | <CODE> int</CODE></FONT></TD> |
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| 198 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#getPreviousIntervalNumOps()">getPreviousIntervalNumOps</A></B>()</CODE> |
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| 199 | |
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| 200 | <BR> |
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| 201 | The number of operations in the previous interval</TD> |
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| 202 | </TR> |
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| 203 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 204 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 205 | <CODE> void</CODE></FONT></TD> |
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| 206 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#inc(int, long)">inc</A></B>(int numOps, |
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| 207 | long time)</CODE> |
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| 208 | |
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| 209 | <BR> |
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| 210 | Increment the metrics for numOps operations</TD> |
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| 211 | </TR> |
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| 212 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 213 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 214 | <CODE> void</CODE></FONT></TD> |
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| 215 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#inc(long)">inc</A></B>(long time)</CODE> |
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| 216 | |
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| 217 | <BR> |
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| 218 | Increment the metrics for one operation</TD> |
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| 219 | </TR> |
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| 220 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 221 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 222 | <CODE> void</CODE></FONT></TD> |
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| 223 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#pushMetric(org.apache.hadoop.metrics.MetricsRecord)">pushMetric</A></B>(<A HREF="../../../../../org/apache/hadoop/metrics/MetricsRecord.html" title="interface in org.apache.hadoop.metrics">MetricsRecord</A> mr)</CODE> |
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| 224 | |
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| 225 | <BR> |
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| 226 | Push the delta metrics to the mr.</TD> |
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| 227 | </TR> |
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| 228 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 229 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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| 230 | <CODE> void</CODE></FONT></TD> |
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| 231 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#resetMinMax()">resetMinMax</A></B>()</CODE> |
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| 232 | |
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| 233 | <BR> |
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| 234 | Reset the min max values</TD> |
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| 235 | </TR> |
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| 236 | </TABLE> |
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| 237 | <A NAME="methods_inherited_from_class_org.apache.hadoop.metrics.util.MetricsBase"><!-- --></A> |
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| 238 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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| 239 | <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
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| 240 | <TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.metrics.util.<A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html" title="class in org.apache.hadoop.metrics.util">MetricsBase</A></B></TH> |
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| 241 | </TR> |
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| 242 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 243 | <TD><CODE><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html#getDescription()">getDescription</A>, <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html#getName()">getName</A></CODE></TD> |
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| 244 | </TR> |
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| 245 | </TABLE> |
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| 246 | <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
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| 247 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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| 248 | <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
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| 249 | <TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH> |
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| 250 | </TR> |
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| 251 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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| 252 | <TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> |
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| 253 | </TR> |
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| 254 | </TABLE> |
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| 255 | |
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| 256 | <P> |
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| 257 | |
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| 258 | <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| 259 | |
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| 260 | <A NAME="constructor_detail"><!-- --></A> |
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| 261 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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| 262 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
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| 263 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
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| 264 | <B>Constructor Detail</B></FONT></TH> |
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| 265 | </TR> |
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| 266 | </TABLE> |
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| 267 | |
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| 268 | <A NAME="MetricsTimeVaryingRate(java.lang.String, org.apache.hadoop.metrics.util.MetricsRegistry, java.lang.String)"><!-- --></A><H3> |
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| 269 | MetricsTimeVaryingRate</H3> |
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| 270 | <PRE> |
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| 271 | public <B>MetricsTimeVaryingRate</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> nam, |
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| 272 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsRegistry.html" title="class in org.apache.hadoop.metrics.util">MetricsRegistry</A> registry, |
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| 273 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> description)</PRE> |
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| 274 | <DL> |
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| 275 | <DD>Constructor - create a new metric |
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| 276 | <P> |
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| 277 | <DL> |
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| 278 | <DT><B>Parameters:</B><DD><CODE>nam</CODE> - the name of the metrics to be used to publish the metric<DD><CODE>registry</CODE> - - where the metrics object will be registered</DL> |
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| 279 | </DL> |
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| 280 | <HR> |
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| 281 | |
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| 282 | <A NAME="MetricsTimeVaryingRate(java.lang.String, org.apache.hadoop.metrics.util.MetricsRegistry)"><!-- --></A><H3> |
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| 283 | MetricsTimeVaryingRate</H3> |
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| 284 | <PRE> |
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| 285 | public <B>MetricsTimeVaryingRate</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> nam, |
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| 286 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsRegistry.html" title="class in org.apache.hadoop.metrics.util">MetricsRegistry</A> registry)</PRE> |
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| 287 | <DL> |
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| 288 | <DD>Constructor - create a new metric |
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| 289 | <P> |
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| 290 | <DL> |
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| 291 | <DT><B>Parameters:</B><DD><CODE>nam</CODE> - the name of the metrics to be used to publish the metric<DD><CODE>registry</CODE> - - where the metrics object will be registered |
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| 292 | A description of <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html#NO_DESCRIPTION"><CODE>MetricsBase.NO_DESCRIPTION</CODE></A> is used</DL> |
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| 293 | </DL> |
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| 294 | |
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| 295 | <!-- ============ METHOD DETAIL ========== --> |
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| 296 | |
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| 297 | <A NAME="method_detail"><!-- --></A> |
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| 298 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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| 299 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
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| 300 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
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| 301 | <B>Method Detail</B></FONT></TH> |
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| 302 | </TR> |
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| 303 | </TABLE> |
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| 304 | |
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| 305 | <A NAME="inc(int, long)"><!-- --></A><H3> |
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| 306 | inc</H3> |
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| 307 | <PRE> |
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| 308 | public void <B>inc</B>(int numOps, |
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| 309 | long time)</PRE> |
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| 310 | <DL> |
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| 311 | <DD>Increment the metrics for numOps operations |
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| 312 | <P> |
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| 313 | <DD><DL> |
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| 314 | <DT><B>Parameters:</B><DD><CODE>numOps</CODE> - - number of operations<DD><CODE>time</CODE> - - time for numOps operations</DL> |
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| 315 | </DD> |
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| 316 | </DL> |
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| 317 | <HR> |
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| 318 | |
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| 319 | <A NAME="inc(long)"><!-- --></A><H3> |
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| 320 | inc</H3> |
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| 321 | <PRE> |
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| 322 | public void <B>inc</B>(long time)</PRE> |
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| 323 | <DL> |
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| 324 | <DD>Increment the metrics for one operation |
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| 325 | <P> |
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| 326 | <DD><DL> |
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| 327 | <DT><B>Parameters:</B><DD><CODE>time</CODE> - for one operation</DL> |
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| 328 | </DD> |
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| 329 | </DL> |
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| 330 | <HR> |
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| 331 | |
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| 332 | <A NAME="pushMetric(org.apache.hadoop.metrics.MetricsRecord)"><!-- --></A><H3> |
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| 333 | pushMetric</H3> |
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| 334 | <PRE> |
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| 335 | public void <B>pushMetric</B>(<A HREF="../../../../../org/apache/hadoop/metrics/MetricsRecord.html" title="interface in org.apache.hadoop.metrics">MetricsRecord</A> mr)</PRE> |
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| 336 | <DL> |
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| 337 | <DD>Push the delta metrics to the mr. |
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| 338 | The delta is since the last push/interval. |
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| 339 | |
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| 340 | Note this does NOT push to JMX |
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| 341 | (JMX gets the info via <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#getPreviousIntervalAverageTime()"><CODE>getPreviousIntervalAverageTime()</CODE></A> and |
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| 342 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#getPreviousIntervalNumOps()"><CODE>getPreviousIntervalNumOps()</CODE></A> |
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| 343 | <P> |
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| 344 | <DD><DL> |
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| 345 | <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html#pushMetric(org.apache.hadoop.metrics.MetricsRecord)">pushMetric</A></CODE> in class <CODE><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html" title="class in org.apache.hadoop.metrics.util">MetricsBase</A></CODE></DL> |
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| 346 | </DD> |
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| 347 | <DD><DL> |
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| 348 | <DT><B>Parameters:</B><DD><CODE>mr</CODE> - </DL> |
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| 349 | </DD> |
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| 350 | </DL> |
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| 351 | <HR> |
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| 352 | |
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| 353 | <A NAME="getPreviousIntervalNumOps()"><!-- --></A><H3> |
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| 354 | getPreviousIntervalNumOps</H3> |
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| 355 | <PRE> |
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| 356 | public int <B>getPreviousIntervalNumOps</B>()</PRE> |
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| 357 | <DL> |
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| 358 | <DD>The number of operations in the previous interval |
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| 359 | <P> |
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| 360 | <DD><DL> |
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| 361 | |
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| 362 | <DT><B>Returns:</B><DD>- ops in prev interval</DL> |
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| 363 | </DD> |
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| 364 | </DL> |
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| 365 | <HR> |
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| 366 | |
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| 367 | <A NAME="getPreviousIntervalAverageTime()"><!-- --></A><H3> |
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| 368 | getPreviousIntervalAverageTime</H3> |
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| 369 | <PRE> |
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| 370 | public long <B>getPreviousIntervalAverageTime</B>()</PRE> |
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| 371 | <DL> |
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| 372 | <DD>The average rate of an operation in the previous interval |
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| 373 | <P> |
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| 374 | <DD><DL> |
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| 375 | |
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| 376 | <DT><B>Returns:</B><DD>- the average rate.</DL> |
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| 377 | </DD> |
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| 378 | </DL> |
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| 379 | <HR> |
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| 380 | |
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| 381 | <A NAME="getMinTime()"><!-- --></A><H3> |
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| 382 | getMinTime</H3> |
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| 383 | <PRE> |
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| 384 | public long <B>getMinTime</B>()</PRE> |
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| 385 | <DL> |
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| 386 | <DD>The min time for a single operation since the last reset |
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| 387 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#resetMinMax()"><CODE>resetMinMax()</CODE></A> |
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| 388 | <P> |
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| 389 | <DD><DL> |
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| 390 | |
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| 391 | <DT><B>Returns:</B><DD>min time for an operation</DL> |
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| 392 | </DD> |
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| 393 | </DL> |
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| 394 | <HR> |
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| 395 | |
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| 396 | <A NAME="getMaxTime()"><!-- --></A><H3> |
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| 397 | getMaxTime</H3> |
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| 398 | <PRE> |
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| 399 | public long <B>getMaxTime</B>()</PRE> |
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| 400 | <DL> |
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| 401 | <DD>The max time for a single operation since the last reset |
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| 402 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html#resetMinMax()"><CODE>resetMinMax()</CODE></A> |
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| 403 | <P> |
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| 404 | <DD><DL> |
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| 405 | |
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| 406 | <DT><B>Returns:</B><DD>max time for an operation</DL> |
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| 407 | </DD> |
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| 408 | </DL> |
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| 409 | <HR> |
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| 410 | |
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| 411 | <A NAME="resetMinMax()"><!-- --></A><H3> |
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| 412 | resetMinMax</H3> |
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| 413 | <PRE> |
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| 414 | public void <B>resetMinMax</B>()</PRE> |
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| 415 | <DL> |
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| 416 | <DD>Reset the min max values |
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| 417 | <P> |
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| 418 | <DD><DL> |
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| 419 | </DL> |
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| 420 | </DD> |
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| 421 | </DL> |
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| 422 | <!-- ========= END OF CLASS DATA ========= --> |
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| 423 | <HR> |
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| 453 | <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingLong.html" title="class in org.apache.hadoop.metrics.util"><B>PREV CLASS</B></A> |
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| 474 | SUMMARY: NESTED | <A HREF="#fields_inherited_from_class_org.apache.hadoop.metrics.util.MetricsBase">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD> |
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