Description: JDiff is a Javadoc doclet which generates an HTML report of all the packages, classes, constructors, methods, and fields which have been removed, added or changed in any way, including their documentation, when two APIs are compared.
Keywords: diff, jdiff, javadiff, java diff, java difference, API difference, difference between two APIs, API diff, Javadoc, doclet

`hadoop 0.20.2+737` | Overview | Package | Class | Statistics | Help
| Generated by JDiff
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# 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 22%.

### 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
92 | org.apache.hadoop.security
76 | org.apache.hadoop.metrics.ganglia
65 | org.apache.hadoop.filecache
41 | org.apache.hadoop.http
39 | org.apache.hadoop.security.authorize
38 | org.apache.hadoop.mapred.lib.db
38 | org.apache.hadoop.ipc.metrics
33 | org.apache.hadoop.mapreduce.lib.partition
24 | org.apache.hadoop.ipc
22 | org.apache.hadoop.conf
21 | org.apache.hadoop.io.compress.bzip2
18 | org.apache.hadoop.metrics.spi
17 | org.apache.hadoop.mapreduce.lib.input
16 | org.apache.hadoop.mapred
16 | org.apache.hadoop.io.compress
12 | org.apache.hadoop.mapreduce
12 | org.apache.hadoop.util
12 | org.apache.hadoop.fs.permission
11 | org.apache.hadoop.mapreduce.lib.output
11 | org.apache.hadoop.mapred.tools
9 | org.apache.hadoop.metrics
9 | org.apache.hadoop
5 | org.apache.hadoop.fs.s3
5 | org.apache.hadoop.io.compress.zlib
4 | org.apache.hadoop.fs
3 | org.apache.hadoop.mapred.lib
3 | org.apache.hadoop.fs.s3native
2 | org.apache.hadoop.io.file.tfile
1 | org.apache.hadoop.io
1 | org.apache.hadoop.tools

Percentage Difference | Frequency | Percentage Frequency
1 | 0.06666666666666667 |
2 | 0.03333333333333333 |
3 | 0.06666666666666667 |
4 | 0.03333333333333333 |
5 | 0.06666666666666667 |
9 | 0.06666666666666667 |
11 | 0.06666666666666667 |
12 | 0.1 |
16 | 0.06666666666666667 |
17 | 0.03333333333333333 |
18 | 0.03333333333333333 |
21 | 0.03333333333333333 |
22 | 0.03333333333333333 |
24 | 0.03333333333333333 |
33 | 0.03333333333333333 |
38 | 0.06666666666666667 |
39 | 0.03333333333333333 |
41 | 0.03333333333333333 |
65 | 0.03333333333333333 |
76 | 0.03333333333333333 |
92 | 0.03333333333333333 |

## Classes and Interfaces Sorted By Percentage Difference

Percentage Difference | Class or Interface
100 | org.apache.hadoop.mapred.lib.db.DBWritable
95 | org.apache.hadoop.security.UserGroupInformation
85 | org.apache.hadoop.security.SecurityUtil
66 | org.apache.hadoop.mapred.lib.db.DBInputFormat.NullDBWritable
64 | org.apache.hadoop.metrics.ganglia.GangliaContext
60 | org.apache.hadoop.mapred.lib.db.DBInputFormat.DBInputSplit
52 | org.apache.hadoop.io.compress.bzip2.CBZip2InputStream
52 | org.apache.hadoop.ipc.metrics.RpcMetrics
51 | org.apache.hadoop.mapred.TaskLog
50 | org.apache.hadoop.fs.s3.S3Exception
50 | org.apache.hadoop.io.compress.BlockDecompressorStream
50 | org.apache.hadoop.mapreduce.Reducer.Context
42 | org.apache.hadoop.ipc.RPC.Server
42 | org.apache.hadoop.security.authorize.ServiceAuthorizationManager
39 | org.apache.hadoop.ipc.Client
35 | org.apache.hadoop.io.compress.CompressionInputStream
33 | org.apache.hadoop.http.FilterInitializer
33 | org.apache.hadoop.mapred.InvalidJobConfException
33 | org.apache.hadoop.security.authorize.Service
30 | org.apache.hadoop.mapred.lib.db.DBInputFormat.DBRecordReader
30 | org.apache.hadoop.filecache.DistributedCache
29 | org.apache.hadoop.io.file.tfile.TFile.Reader
26 | org.apache.hadoop.ipc.RPC
25 | org.apache.hadoop.io.compress.zlib.ZlibFactory
25 | org.apache.hadoop.mapred.OutputLogFilter
25 | org.apache.hadoop.mapred.lib.MultipleSequenceFileOutputFormat
25 | org.apache.hadoop.mapred.lib.MultipleTextOutputFormat
25 | org.apache.hadoop.util.DiskChecker
25 | org.apache.hadoop.util.ProcfsBasedProcessTree
25 | org.apache.hadoop.util.RunJar
21 | org.apache.hadoop.util.Shell
20 | org.apache.hadoop.mapred.OutputCommitter
20 | org.apache.hadoop.mapred.lib.db.DBOutputFormat
20 | org.apache.hadoop.mapred.lib.db.DBOutputFormat.DBRecordWriter
20 | org.apache.hadoop.metrics.spi.OutputRecord
18 | org.apache.hadoop.mapreduce.OutputCommitter
18 | org.apache.hadoop.mapred.JobTracker
17 | org.apache.hadoop.mapred.TaskTracker
17 | org.apache.hadoop.mapreduce.JobContext
15 | org.apache.hadoop.io.compress.DecompressorStream
15 | org.apache.hadoop.ipc.Server
14 | org.apache.hadoop.fs.DF
14 | org.apache.hadoop.mapred.FileOutputCommitter
14 | org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter
13 | org.apache.hadoop.http.HttpServer
12 | org.apache.hadoop.io.compress.GzipCodec.GzipInputStream
12 | org.apache.hadoop.mapreduce.lib.output.FileOutputFormat
11 | org.apache.hadoop.mapred.JobHistory
11 | org.apache.hadoop.io.compress.zlib.BuiltInZlibDeflater
11 | org.apache.hadoop.io.compress.zlib.ZlibCompressor
11 | org.apache.hadoop.mapred.tools.MRAdmin
10 | org.apache.hadoop.conf.Configuration
10 | org.apache.hadoop.mapred.TaskLogAppender
9 | org.apache.hadoop.HadoopVersionAnnotation
9 | org.apache.hadoop.io.compress.CodecPool
9 | org.apache.hadoop.ipc.RemoteException
9 | org.apache.hadoop.tools.HadoopArchives
8 | org.apache.hadoop.mapred.JobConf
8 | org.apache.hadoop.io.compress.bzip2.BZip2Constants
7 | org.apache.hadoop.mapred.lib.db.DBInputFormat
7 | org.apache.hadoop.fs.FSDataInputStream
7 | org.apache.hadoop.mapreduce.ReduceContext
7 | org.apache.hadoop.util.HostsFileReader
6 | org.apache.hadoop.util.StringUtils
6 | org.apache.hadoop.fs.LocalDirAllocator
6 | org.apache.hadoop.mapred.ClusterStatus
6 | org.apache.hadoop.mapred.JobHistory.JobInfo
6 | org.apache.hadoop.mapred.JobHistory.Keys
6 | org.apache.hadoop.mapred.JobClient
6 | org.apache.hadoop.mapred.lib.MultipleOutputFormat
6 | org.apache.hadoop.fs.FileSystem
5 | org.apache.hadoop.util.Shell.ShellCommandExecutor
5 | org.apache.hadoop.util.VersionInfo
5 | org.apache.hadoop.io.IOUtils
5 | org.apache.hadoop.metrics.ContextFactory
5 | org.apache.hadoop.mapred.JobStatus
4 | org.apache.hadoop.io.compress.BZip2Codec
4 | org.apache.hadoop.io.compress.Compressor
4 | org.apache.hadoop.metrics.spi.AbstractMetricsContext
4 | org.apache.hadoop.fs.FileUtil
4 | org.apache.hadoop.fs.permission.FsPermission
4 | org.apache.hadoop.io.compress.bzip2.BZip2DummyCompressor
4 | org.apache.hadoop.metrics.MetricsContext
3 | org.apache.hadoop.mapred.lib.MultipleOutputs
3 | org.apache.hadoop.io.file.tfile.TFile.Reader.Scanner
3 | org.apache.hadoop.io.SequenceFile.Writer
3 | org.apache.hadoop.mapred.lib.db.DBConfiguration
3 | org.apache.hadoop.fs.s3native.NativeS3FileSystem
3 | org.apache.hadoop.mapreduce.Job
2 | org.apache.hadoop.fs.s3.S3FileSystem
2 | org.apache.hadoop.io.WritableComparator
1 | org.apache.hadoop.fs.RawLocalFileSystem
1 | org.apache.hadoop.fs.HarFileSystem
1 | org.apache.hadoop.fs.FilterFileSystem

Percentage Difference | Frequency | Percentage Frequency
1 | 0.031914893617021274 |
2 | 0.02127659574468085 |
3 | 0.06382978723404255 |
4 | 0.07446808510638298 |
5 | 0.05319148936170213 |
6 | 0.0851063829787234 |
7 | 0.0425531914893617 |
8 | 0.02127659574468085 |
9 | 0.0425531914893617 |
10 | 0.02127659574468085 |
11 | 0.0425531914893617 |
12 | 0.02127659574468085 |
13 | 0.010638297872340425 |
14 | 0.031914893617021274 |
15 | 0.02127659574468085 |
17 | 0.02127659574468085 |
18 | 0.02127659574468085 |
20 | 0.0425531914893617 |
21 | 0.010638297872340425 |
25 | 0.07446808510638298 |
26 | 0.010638297872340425 |
29 | 0.010638297872340425 |
30 | 0.02127659574468085 |
33 | 0.031914893617021274 |
35 | 0.010638297872340425 |
39 | 0.010638297872340425 |
42 | 0.02127659574468085 |
50 | 0.031914893617021274 |
51 | 0.010638297872340425 |
52 | 0.02127659574468085 |
60 | 0.010638297872340425 |
64 | 0.010638297872340425 |
66 | 0.010638297872340425 |
85 | 0.010638297872340425 |
95 | 0.010638297872340425 |
100 | 0.010638297872340425 |

## 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 | 13 | 30 | 43
Classes and Interfaces | 6 | 101 | 94 | 201
Constructors | 2 | 12 | 12 | 26
Methods | 31 | 213 | 52 | 296
Fields | 2 | 81 | 5 | 88
Total | 41 | 420 | 193 | 654