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java.lang.Objectorg.apache.mahout.df.DFUtils
public class DFUtils
Utility class that contains various helper methods
Method Summary | |
---|---|
static java.lang.String |
elapsedTime(long milli)
Formats a time interval in milliseconds to a String in the form "hours:minutes:seconds:millis" |
static org.apache.hadoop.fs.Path[] |
listOutputFiles(org.apache.hadoop.fs.FileSystem fs,
org.apache.hadoop.fs.Path outputPath)
Return a list of all files in the output directory |
static double[] |
readDoubleArray(java.io.DataInput in)
Reads a double[] from a DataInput |
static int[] |
readIntArray(java.io.DataInput in)
Reads an int[] from a DataInput |
static Node[] |
readNodeArray(java.io.DataInput in)
Reads a Node[] from a DataInput |
static void |
writeArray(java.io.DataOutput out,
double[] array)
Writes a double[] into a DataOutput |
static void |
writeArray(java.io.DataOutput out,
int[] array)
Writes an int[] into a DataOutput |
static void |
writeArray(java.io.DataOutput out,
Node[] array)
Writes an Node[] into a DataOutput |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static void writeArray(java.io.DataOutput out, Node[] array) throws java.io.IOException
out
- array
-
java.io.IOException
public static Node[] readNodeArray(java.io.DataInput in) throws java.io.IOException
in
-
java.io.IOException
public static void writeArray(java.io.DataOutput out, double[] array) throws java.io.IOException
out
- array
-
java.io.IOException
public static double[] readDoubleArray(java.io.DataInput in) throws java.io.IOException
in
-
java.io.IOException
public static void writeArray(java.io.DataOutput out, int[] array) throws java.io.IOException
out
- array
-
java.io.IOException
public static int[] readIntArray(java.io.DataInput in) throws java.io.IOException
in
-
java.io.IOException
public static org.apache.hadoop.fs.Path[] listOutputFiles(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path outputPath) throws java.io.IOException
fs
- outputPath
-
java.io.IOException
java.lang.RuntimeException
- if no file is foundpublic static java.lang.String elapsedTime(long milli)
milli
-
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