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91org.apache.hadoop.metrics.util</FONT>
92<BR>
93Class MetricsTimeVaryingLong</H2>
94<PRE>
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>
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>
97      <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.metrics.util.MetricsTimeVaryingLong</B>
98</PRE>
99<HR>
100<DL>
101<DT><PRE>public class <B>MetricsTimeVaryingLong</B><DT>extends <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html" title="class in org.apache.hadoop.metrics.util">MetricsBase</A></DL>
102</PRE>
103
104<P>
105The MetricsTimeVaryingLong class is for a metric that naturally
106 varies over time (e.g. number of files created). The metrics is accumulated
107 over an interval (set in the metrics config file); the metrics is
108  published at the end of each interval and then
109 reset to zero. Hence the counter has the value in the current interval.
110 
111 Note if one wants a time associated with the metric then use
112<P>
113
114<P>
115<DL>
116<DT><B>See Also:</B><DD><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingRate.html" title="class in org.apache.hadoop.metrics.util"><CODE>MetricsTimeVaryingRate</CODE></A></DL>
117<HR>
118
119<P>
120<!-- =========== FIELD SUMMARY =========== -->
121
122<A NAME="field_summary"><!-- --></A>
123<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
124<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
125<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
126<B>Field Summary</B></FONT></TH>
127</TR>
128</TABLE>
129&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.metrics.util.MetricsBase"><!-- --></A>
130<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
131<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
132<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>
133</TR>
134<TR BGCOLOR="white" CLASS="TableRowColor">
135<TD><CODE><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html#NO_DESCRIPTION">NO_DESCRIPTION</A></CODE></TD>
136</TR>
137</TABLE>
138&nbsp;
139<!-- ======== CONSTRUCTOR SUMMARY ======== -->
140
141<A NAME="constructor_summary"><!-- --></A>
142<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
143<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
144<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
145<B>Constructor Summary</B></FONT></TH>
146</TR>
147<TR BGCOLOR="white" CLASS="TableRowColor">
148<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingLong.html#MetricsTimeVaryingLong(java.lang.String, org.apache.hadoop.metrics.util.MetricsRegistry)">MetricsTimeVaryingLong</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>&nbsp;nam,
149                       <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsRegistry.html" title="class in org.apache.hadoop.metrics.util">MetricsRegistry</A>&nbsp;registry)</CODE>
150
151<BR>
152&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructor - create a new metric</TD>
153</TR>
154<TR BGCOLOR="white" CLASS="TableRowColor">
155<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingLong.html#MetricsTimeVaryingLong(java.lang.String, org.apache.hadoop.metrics.util.MetricsRegistry, java.lang.String)">MetricsTimeVaryingLong</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>&nbsp;nam,
156                       <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsRegistry.html" title="class in org.apache.hadoop.metrics.util">MetricsRegistry</A>&nbsp;registry,
157                       <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>&nbsp;description)</CODE>
158
159<BR>
160&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructor - create a new metric</TD>
161</TR>
162</TABLE>
163&nbsp;
164<!-- ========== METHOD SUMMARY =========== -->
165
166<A NAME="method_summary"><!-- --></A>
167<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
168<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
169<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
170<B>Method Summary</B></FONT></TH>
171</TR>
172<TR BGCOLOR="white" CLASS="TableRowColor">
173<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
174<CODE>&nbsp;long</CODE></FONT></TD>
175<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingLong.html#getCurrentIntervalValue()">getCurrentIntervalValue</A></B>()</CODE>
176
177<BR>
178&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Value at the current interval</TD>
179</TR>
180<TR BGCOLOR="white" CLASS="TableRowColor">
181<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
182<CODE>&nbsp;long</CODE></FONT></TD>
183<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingLong.html#getPreviousIntervalValue()">getPreviousIntervalValue</A></B>()</CODE>
184
185<BR>
186&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Value at the Previous interval</TD>
187</TR>
188<TR BGCOLOR="white" CLASS="TableRowColor">
189<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
190<CODE>&nbsp;void</CODE></FONT></TD>
191<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingLong.html#inc()">inc</A></B>()</CODE>
192
193<BR>
194&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Inc metrics by one</TD>
195</TR>
196<TR BGCOLOR="white" CLASS="TableRowColor">
197<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
198<CODE>&nbsp;void</CODE></FONT></TD>
199<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingLong.html#inc(long)">inc</A></B>(long&nbsp;incr)</CODE>
200
201<BR>
202&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Inc metrics for incr vlaue</TD>
203</TR>
204<TR BGCOLOR="white" CLASS="TableRowColor">
205<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
206<CODE>&nbsp;void</CODE></FONT></TD>
207<TD><CODE><B><A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingLong.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>&nbsp;mr)</CODE>
208
209<BR>
210&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Push the delta  metrics to the mr.</TD>
211</TR>
212</TABLE>
213&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.metrics.util.MetricsBase"><!-- --></A>
214<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
215<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
216<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>
217</TR>
218<TR BGCOLOR="white" CLASS="TableRowColor">
219<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>
220</TR>
221</TABLE>
222&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
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224<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
225<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>
226</TR>
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229</TR>
230</TABLE>
231&nbsp;
232<P>
233
234<!-- ========= CONSTRUCTOR DETAIL ======== -->
235
236<A NAME="constructor_detail"><!-- --></A>
237<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
238<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
239<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
240<B>Constructor Detail</B></FONT></TH>
241</TR>
242</TABLE>
243
244<A NAME="MetricsTimeVaryingLong(java.lang.String, org.apache.hadoop.metrics.util.MetricsRegistry, java.lang.String)"><!-- --></A><H3>
245MetricsTimeVaryingLong</H3>
246<PRE>
247public <B>MetricsTimeVaryingLong</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>&nbsp;nam,
248                              <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsRegistry.html" title="class in org.apache.hadoop.metrics.util">MetricsRegistry</A>&nbsp;registry,
249                              <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>&nbsp;description)</PRE>
250<DL>
251<DD>Constructor - create a new metric
252<P>
253<DL>
254<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>
255</DL>
256<HR>
257
258<A NAME="MetricsTimeVaryingLong(java.lang.String, org.apache.hadoop.metrics.util.MetricsRegistry)"><!-- --></A><H3>
259MetricsTimeVaryingLong</H3>
260<PRE>
261public <B>MetricsTimeVaryingLong</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>&nbsp;nam,
262                              <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsRegistry.html" title="class in org.apache.hadoop.metrics.util">MetricsRegistry</A>&nbsp;registry)</PRE>
263<DL>
264<DD>Constructor - create a new metric
265<P>
266<DL>
267<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
268 A description of <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsBase.html#NO_DESCRIPTION"><CODE>MetricsBase.NO_DESCRIPTION</CODE></A> is used</DL>
269</DL>
270
271<!-- ============ METHOD DETAIL ========== -->
272
273<A NAME="method_detail"><!-- --></A>
274<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
275<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
276<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
277<B>Method Detail</B></FONT></TH>
278</TR>
279</TABLE>
280
281<A NAME="inc(long)"><!-- --></A><H3>
282inc</H3>
283<PRE>
284public void <B>inc</B>(long&nbsp;incr)</PRE>
285<DL>
286<DD>Inc metrics for incr vlaue
287<P>
288<DD><DL>
289<DT><B>Parameters:</B><DD><CODE>incr</CODE> - - number of operations</DL>
290</DD>
291</DL>
292<HR>
293
294<A NAME="inc()"><!-- --></A><H3>
295inc</H3>
296<PRE>
297public void <B>inc</B>()</PRE>
298<DL>
299<DD>Inc metrics by one
300<P>
301<DD><DL>
302</DL>
303</DD>
304</DL>
305<HR>
306
307<A NAME="pushMetric(org.apache.hadoop.metrics.MetricsRecord)"><!-- --></A><H3>
308pushMetric</H3>
309<PRE>
310public void <B>pushMetric</B>(<A HREF="../../../../../org/apache/hadoop/metrics/MetricsRecord.html" title="interface in org.apache.hadoop.metrics">MetricsRecord</A>&nbsp;mr)</PRE>
311<DL>
312<DD>Push the delta  metrics to the mr.
313 The delta is since the last push/interval.
314 
315 Note this does NOT push to JMX
316 (JMX gets the info via <A HREF="../../../../../org/apache/hadoop/metrics/util/MetricsTimeVaryingLong.html#previousIntervalValue"><CODE>previousIntervalValue</CODE></A>
317<P>
318<DD><DL>
319<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>
320</DD>
321<DD><DL>
322<DT><B>Parameters:</B><DD><CODE>mr</CODE> - </DL>
323</DD>
324</DL>
325<HR>
326
327<A NAME="getPreviousIntervalValue()"><!-- --></A><H3>
328getPreviousIntervalValue</H3>
329<PRE>
330public long <B>getPreviousIntervalValue</B>()</PRE>
331<DL>
332<DD>The Value at the Previous interval
333<P>
334<DD><DL>
335
336<DT><B>Returns:</B><DD>prev interval value</DL>
337</DD>
338</DL>
339<HR>
340
341<A NAME="getCurrentIntervalValue()"><!-- --></A><H3>
342getCurrentIntervalValue</H3>
343<PRE>
344public long <B>getCurrentIntervalValue</B>()</PRE>
345<DL>
346<DD>The Value at the current interval
347<P>
348<DD><DL>
349
350<DT><B>Returns:</B><DD>prev interval value</DL>
351</DD>
352</DL>
353<!-- ========= END OF CLASS DATA ========= -->
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