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7org.apache.hadoop.metrics.file (Hadoop 0.20.1 API)
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83Package org.apache.hadoop.metrics.file
84</H2>
85Implementation of the metrics package that writes the metrics to a file.
86<P>
87<B>See:</B>
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89&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<A HREF="#package_description"><B>Description</B></A>
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98<TD WIDTH="15%"><B><A HREF="../../../../../org/apache/hadoop/metrics/file/FileContext.html" title="class in org.apache.hadoop.metrics.file">FileContext</A></B></TD>
99<TD>Metrics context for writing metrics to a file.<p/>
100
101 This class is configured by setting ContextFactory attributes which in turn
102 are usually configured through a properties file.</TD>
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109Package org.apache.hadoop.metrics.file Description
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111
112<P>
113Implementation of the metrics package that writes the metrics to a file.
114Programmers should not normally need to use this package directly. Instead
115they should use org.hadoop.metrics.
116
117<p/>
118These are the implementation specific factory attributes
119(See ContextFactory.getFactory()):
120
121<dl>
122    <dt><i>contextName</i>.fileName</dt>
123    <dd>The path of the file to which metrics in context <i>contextName</i>
124    are to be appended.  If this attribute is not specified, the metrics
125    are written to standard output by default.</dd>
126   
127    <dt><i>contextName</i>.period</dt>
128    <dd>The period in seconds on which the metric data is written to the
129    file.</dd>
130   
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