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JDiff

JDiff Statistics

The percent change statistic reported for all elements in each API is defined recursively as follows:
Percentage difference = 100 * (added + removed + 2*changed)
                        -----------------------------------
                        sum of public elements in BOTH APIs
Where added is the number of packages added, removed is the number of packages removed, and changed is the number of packages changed. This definition is applied recursively for the classes and their program elements, so the value for a changed package will be less than 1, unless every class in that package has changed. The definition ensures that if all packages are removed and all new packages are added, the change will be 100%. Values are rounded here, so a value of 0% indicates a percentage difference of less than 0.5%.

The overall difference between the two APIs is approximately 8%.

Sections

Packages sorted by percentage difference
Classes and Interfaces sorted by percentage difference
Differences by number and type

Packages Sorted By Percentage Difference

Percentage
Difference
Package
30 org.apache.hadoop.mapred.lib
20 org.apache.hadoop.security
17 org.apache.hadoop.io.compress
17 org.apache.hadoop.mapred.pipes
15 org.apache.hadoop.mapred
14 org.apache.hadoop.io.compress.lzo
11 org.apache.hadoop.util
9 org.apache.hadoop.io.compress.zlib
8 org.apache.hadoop.fs.shell
8 org.apache.hadoop.ipc
7 org.apache.hadoop.net
6 org.apache.hadoop.fs
5 org.apache.hadoop.io
2 org.apache.hadoop.conf
2 org.apache.hadoop.mapred.join
2 org.apache.hadoop.tools
1 org.apache.hadoop.filecache
1 org.apache.hadoop.fs.permission
1 org.apache.hadoop.record
<1 org.apache.hadoop.mapred.jobcontrol

Percentage
Difference
Frequency Percentage Frequency
0 0.05 |
1 0.15 |
2 0.15 |
5 0.05 |
6 0.05 |
7 0.05 |
8 0.1 |
9 0.05 |
11 0.05 |
14 0.05 |
15 0.05 |
17 0.1 |
20 0.05 |
30 0.05 |


Classes and Interfaces Sorted By Percentage Difference

Percentage
Difference
Class or Interface
100 org.apache.hadoop.mapred.StatusHttpServer
88 org.apache.hadoop.mapred.JobHistory.MapAttempt
88 org.apache.hadoop.mapred.JobHistory.ReduceAttempt
66 org.apache.hadoop.io.ArrayFile.Writer
66 org.apache.hadoop.mapred.LineRecordReader.LineReader
50 org.apache.hadoop.io.SetFile.Writer
50 org.apache.hadoop.io.WritableFactories
48 org.apache.hadoop.mapred.JobHistory.JobInfo
44 org.apache.hadoop.mapred.TaskTracker
35 org.apache.hadoop.mapred.JobHistory
33 org.apache.hadoop.mapred.SequenceFileInputFormat
30 org.apache.hadoop.io.MapFile.Writer
28 org.apache.hadoop.mapred.JobHistory.Task
27 org.apache.hadoop.mapred.JobStatus
27 org.apache.hadoop.util.HostsFileReader
26 org.apache.hadoop.mapred.JobTracker
25 org.apache.hadoop.io.SequenceFile.CompressionType
25 org.apache.hadoop.io.compress.lzo.LzoCompressor.CompressionStrategy
25 org.apache.hadoop.io.compress.lzo.LzoDecompressor.CompressionStrategy
25 org.apache.hadoop.io.compress.zlib.ZlibCompressor.CompressionLevel
25 org.apache.hadoop.io.compress.zlib.ZlibCompressor.CompressionStrategy
25 org.apache.hadoop.ipc.Client
25 org.apache.hadoop.mapred.JobClient.TaskStatusFilter
25 org.apache.hadoop.mapred.JobHistory.Keys
25 org.apache.hadoop.mapred.JobHistory.RecordTypes
25 org.apache.hadoop.mapred.JobHistory.Values
25 org.apache.hadoop.mapred.JobPriority
25 org.apache.hadoop.mapred.JobTracker.State
25 org.apache.hadoop.mapred.TaskCompletionEvent.Status
25 org.apache.hadoop.mapred.join.Parser.TType
25 org.apache.hadoop.net.ScriptBasedMapping
25 org.apache.hadoop.util.NativeCodeLoader
23 org.apache.hadoop.mapred.TaskLog
20 org.apache.hadoop.io.ArrayWritable
20 org.apache.hadoop.ipc.RemoteException
20 org.apache.hadoop.mapred.InputFormat
20 org.apache.hadoop.mapred.TaskLogServlet
20 org.apache.hadoop.util.PriorityQueue
18 org.apache.hadoop.fs.shell.Command
17 org.apache.hadoop.mapred.pipes.Submitter
16 org.apache.hadoop.io.WritableComparator
16 org.apache.hadoop.io.compress.zlib.ZlibCompressor.CompressionHeader
16 org.apache.hadoop.io.compress.zlib.ZlibDecompressor.CompressionHeader
16 org.apache.hadoop.mapred.TaskLog.LogName
16 org.apache.hadoop.record.RecordComparator
16 org.apache.hadoop.util.ServletUtil
16 org.apache.hadoop.io.BytesWritable
15 org.apache.hadoop.fs.ContentSummary
14 org.apache.hadoop.fs.FSOutputSummer
14 org.apache.hadoop.mapred.Counters.Counter
14 org.apache.hadoop.mapred.SequenceFileAsBinaryOutputFormat
14 org.apache.hadoop.mapred.lib.KeyFieldBasedPartitioner
13 org.apache.hadoop.ipc.Server
13 org.apache.hadoop.tools.DistCp
12 org.apache.hadoop.io.WritableName
12 org.apache.hadoop.mapred.FileOutputFormat
12 org.apache.hadoop.util.StringUtils
11 org.apache.hadoop.mapred.RunningJob
11 org.apache.hadoop.mapred.TextOutputFormat.LineRecordWriter
10 org.apache.hadoop.conf.Configuration
10 org.apache.hadoop.mapred.JobConf
10 org.apache.hadoop.mapred.Counters.Group
9 org.apache.hadoop.mapred.JobClient
9 org.apache.hadoop.mapred.Reporter
9 org.apache.hadoop.util.GenericOptionsParser
8 org.apache.hadoop.mapred.JobProfile
8 org.apache.hadoop.mapred.TaskReport
8 org.apache.hadoop.mapred.Counters
7 org.apache.hadoop.fs.LocalFileSystem
7 org.apache.hadoop.io.DataOutputBuffer
7 org.apache.hadoop.fs.FileStatus
7 org.apache.hadoop.fs.FileUtil
7 org.apache.hadoop.fs.shell.Count
7 org.apache.hadoop.io.MapFile
7 org.apache.hadoop.mapred.join.ResetableIterator
7 org.apache.hadoop.util.ReflectionUtils
6 org.apache.hadoop.mapred.TaskCompletionEvent
6 org.apache.hadoop.util.Shell.ShellCommandExecutor
6 org.apache.hadoop.fs.permission.FsAction
6 org.apache.hadoop.io.MapFile.Reader
6 org.apache.hadoop.io.compress.CompressionCodecFactory
6 org.apache.hadoop.mapred.join.JoinRecordReader.JoinDelegationIterator
6 org.apache.hadoop.mapred.join.MultiFilterRecordReader.MultiFilterDelegationIterator
6 org.apache.hadoop.mapred.join.ResetableIterator.EMPTY
6 org.apache.hadoop.mapred.join.StreamBackedIterator
6 org.apache.hadoop.net.NetUtils
5 org.apache.hadoop.io.SequenceFile.Sorter
5 org.apache.hadoop.io.WritableUtils
5 org.apache.hadoop.mapred.FileInputFormat
5 org.apache.hadoop.mapred.TaskLogAppender
5 org.apache.hadoop.mapred.join.CompositeInputFormat
5 org.apache.hadoop.mapred.join.ArrayListBackedIterator
5 org.apache.hadoop.mapred.LineRecordReader
4 org.apache.hadoop.io.MD5Hash
4 org.apache.hadoop.io.compress.lzo.LzoDecompressor
3 org.apache.hadoop.io.SequenceFile.Reader
3 org.apache.hadoop.io.compress.lzo.LzoCompressor
3 org.apache.hadoop.fs.FilterFileSystem
3 org.apache.hadoop.net.NetworkTopology
2 org.apache.hadoop.fs.FSInputChecker
2 org.apache.hadoop.util.Shell
2 org.apache.hadoop.fs.FileSystem
1 org.apache.hadoop.mapred.jobcontrol.Job
1 org.apache.hadoop.filecache.DistributedCache
1 org.apache.hadoop.io.Text

Percentage
Difference
Frequency Percentage Frequency
1 0.02857142857142857 |
2 0.02857142857142857 |
3 0.0380952380952381 |
4 0.01904761904761905 |
5 0.06666666666666667 |
6 0.09523809523809523 |
7 0.0761904761904762 |
8 0.02857142857142857 |
9 0.02857142857142857 |
10 0.02857142857142857 |
11 0.01904761904761905 |
12 0.02857142857142857 |
13 0.01904761904761905 |
14 0.0380952380952381 |
15 0.009523809523809525 |
16 0.06666666666666667 |
17 0.009523809523809525 |
18 0.009523809523809525 |
20 0.047619047619047616 |
23 0.009523809523809525 |
25 0.1523809523809524 |
26 0.009523809523809525 |
27 0.01904761904761905 |
28 0.009523809523809525 |
30 0.009523809523809525 |
33 0.009523809523809525 |
35 0.009523809523809525 |
44 0.009523809523809525 |
48 0.009523809523809525 |
50 0.01904761904761905 |
66 0.01904761904761905 |
88 0.01904761904761905 |
100 0.009523809523809525 |


Differences By Number and Type

The numbers of program elements (packages, classes. constructors, methods and fields) which are recorded as removed, added or changed includes only the highest-level program elements. That is, if a class with two methods was added, the number of methods added does not include those two methods, but the number of classes added does include that class.
Number of Differences
  Removals Additions Changes Total
Packages 0 3 20 23
Classes and Interfaces 5 34 105 144
Constructors 23 27 3 53
Methods 67 144 78 289
Fields 3 11 0 14
Total 98 219 206 523