| Package | Description | 
|---|---|
| org.apache.hadoop.fs | An abstract file system API. | 
| org.apache.hadoop.fs.azure | 
A distributed implementation of  FileSystemfor reading and writing files on
Azure Block Storage. | 
| org.apache.hadoop.fs.ftp | |
| org.apache.hadoop.fs.s3 | A distributed, block-based implementation of  FileSystemthat uses Amazon S3
as a backing store. | 
| org.apache.hadoop.fs.s3native | 
A distributed implementation of  FileSystemfor reading and writing files on
Amazon S3. | 
| org.apache.hadoop.fs.viewfs | |
| org.apache.hadoop.io | Generic i/o code for use when reading and writing data to the network,
to databases, and to files. | 
| org.apache.hadoop.mapred | |
| org.apache.hadoop.mapred.lib | |
| org.apache.hadoop.mapred.lib.db | |
| org.apache.hadoop.mapreduce | 
| Modifier and Type | Method and Description | 
|---|---|
| FSDataOutputStream | RawLocalFileSystem. append(Path f,
            int bufferSize,
            Progressable progress) | 
| FSDataOutputStream | FilterFileSystem. append(Path f,
            int bufferSize,
            Progressable progress) | 
| FSDataOutputStream | ChecksumFileSystem. append(Path f,
            int bufferSize,
            Progressable progress) | 
| abstract FSDataOutputStream | FileSystem. append(Path f,
            int bufferSize,
            Progressable progress)Append to an existing file (optional operation). | 
| FSDataOutputStream | FileSystem. create(Path f,
            boolean overwrite,
            int bufferSize,
            Progressable progress)Create an FSDataOutputStream at the indicated Path with write-progress
 reporting. | 
| FSDataOutputStream | RawLocalFileSystem. create(Path f,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress) | 
| FSDataOutputStream | FileSystem. create(Path f,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress)Create an FSDataOutputStream at the indicated Path with write-progress
 reporting. | 
| FSDataOutputStream | RawLocalFileSystem. create(Path f,
            FsPermission permission,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress) | 
| FSDataOutputStream | FilterFileSystem. create(Path f,
            FsPermission permission,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress) | 
| FSDataOutputStream | ChecksumFileSystem. create(Path f,
            FsPermission permission,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress) | 
| abstract FSDataOutputStream | FileSystem. create(Path f,
            FsPermission permission,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress)Create an FSDataOutputStream at the indicated Path with write-progress
 reporting. | 
| FSDataOutputStream | FileSystem. create(Path f,
            FsPermission permission,
            EnumSet<CreateFlag> flags,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress)Create an FSDataOutputStream at the indicated Path with write-progress
 reporting. | 
| FSDataOutputStream | FilterFileSystem. create(Path f,
            FsPermission permission,
            EnumSet<CreateFlag> flags,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress,
            org.apache.hadoop.fs.Options.ChecksumOpt checksumOpt) | 
| FSDataOutputStream | FileSystem. create(Path f,
            FsPermission permission,
            EnumSet<CreateFlag> flags,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress,
            org.apache.hadoop.fs.Options.ChecksumOpt checksumOpt)Create an FSDataOutputStream at the indicated Path with a custom
 checksum option | 
| FSDataOutputStream | FileSystem. create(Path f,
            Progressable progress)Create an FSDataOutputStream at the indicated Path with write-progress
 reporting. | 
| FSDataOutputStream | FileSystem. create(Path f,
            short replication,
            Progressable progress)Create an FSDataOutputStream at the indicated Path with write-progress
 reporting. | 
| abstract FSDataOutputStream | AbstractFileSystem. createInternal(Path f,
                            EnumSet<CreateFlag> flag,
                            FsPermission absolutePermission,
                            int bufferSize,
                            short replication,
                            long blockSize,
                            Progressable progress,
                            org.apache.hadoop.fs.Options.ChecksumOpt checksumOpt,
                            boolean createParent)The specification of this method matches that of
  AbstractFileSystem.create(Path, EnumSet, Options.CreateOpts...)except that the opts
 have been declared explicitly. | 
| FSDataOutputStream | FileSystem. createNonRecursive(Path f,
                                    boolean overwrite,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress)Deprecated. 
 API only for 0.20-append | 
| FSDataOutputStream | RawLocalFileSystem. createNonRecursive(Path f,
                                    FsPermission permission,
                                    boolean overwrite,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress) | 
| FSDataOutputStream | ChecksumFileSystem. createNonRecursive(Path f,
                                    FsPermission permission,
                                    boolean overwrite,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress) | 
| FSDataOutputStream | FileSystem. createNonRecursive(Path f,
                                    FsPermission permission,
                                    boolean overwrite,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress)Deprecated. 
 API only for 0.20-append | 
| FSDataOutputStream | RawLocalFileSystem. createNonRecursive(Path f,
                                    FsPermission permission,
                                    EnumSet<CreateFlag> flags,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress)Deprecated.  | 
| FSDataOutputStream | FilterFileSystem. createNonRecursive(Path f,
                                    FsPermission permission,
                                    EnumSet<CreateFlag> flags,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress)Deprecated.  | 
| FSDataOutputStream | FileSystem. createNonRecursive(Path f,
                                    FsPermission permission,
                                    EnumSet<CreateFlag> flags,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress)Deprecated. 
 API only for 0.20-append | 
| protected FSDataOutputStream | FilterFileSystem. primitiveCreate(Path f,
                              FsPermission absolutePermission,
                              EnumSet<CreateFlag> flag,
                              int bufferSize,
                              short replication,
                              long blockSize,
                              Progressable progress,
                              org.apache.hadoop.fs.Options.ChecksumOpt checksumOpt) | 
| protected FSDataOutputStream | FileSystem. primitiveCreate(Path f,
                              FsPermission absolutePermission,
                              EnumSet<CreateFlag> flag,
                              int bufferSize,
                              short replication,
                              long blockSize,
                              Progressable progress,
                              org.apache.hadoop.fs.Options.ChecksumOpt checksumOpt)Deprecated.  | 
| Modifier and Type | Method and Description | 
|---|---|
| FSDataOutputStream | NativeAzureFileSystem. append(Path f,
            int bufferSize,
            Progressable progress)This optional operation is not yet supported. | 
| FSDataOutputStream | NativeAzureFileSystem. create(Path f,
            FsPermission permission,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress) | 
| FSDataOutputStream | NativeAzureFileSystem. createNonRecursive(Path f,
                                    boolean overwrite,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress) | 
| FSDataOutputStream | NativeAzureFileSystem. createNonRecursive(Path f,
                                    FsPermission permission,
                                    boolean overwrite,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress) | 
| FSDataOutputStream | NativeAzureFileSystem. createNonRecursive(Path f,
                                    FsPermission permission,
                                    EnumSet<CreateFlag> flags,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress) | 
| Modifier and Type | Method and Description | 
|---|---|
| FSDataOutputStream | FTPFileSystem. append(Path f,
            int bufferSize,
            Progressable progress)This optional operation is not yet supported. | 
| FSDataOutputStream | FTPFileSystem. create(Path file,
            FsPermission permission,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress)A stream obtained via this call must be closed before using other APIs of
 this class or else the invocation will block. | 
| Modifier and Type | Method and Description | 
|---|---|
| FSDataOutputStream | S3FileSystem. append(Path f,
            int bufferSize,
            Progressable progress)This optional operation is not yet supported. | 
| FSDataOutputStream | S3FileSystem. create(Path file,
            FsPermission permission,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress) | 
| Modifier and Type | Method and Description | 
|---|---|
| FSDataOutputStream | NativeS3FileSystem. append(Path f,
            int bufferSize,
            Progressable progress)This optional operation is not yet supported. | 
| FSDataOutputStream | NativeS3FileSystem. create(Path f,
            FsPermission permission,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress) | 
| Modifier and Type | Method and Description | 
|---|---|
| FSDataOutputStream | ViewFileSystem. append(Path f,
            int bufferSize,
            Progressable progress) | 
| FSDataOutputStream | ViewFileSystem. create(Path f,
            FsPermission permission,
            boolean overwrite,
            int bufferSize,
            short replication,
            long blockSize,
            Progressable progress) | 
| FSDataOutputStream | ViewFs. createInternal(Path f,
                            EnumSet<CreateFlag> flag,
                            FsPermission absolutePermission,
                            int bufferSize,
                            short replication,
                            long blockSize,
                            Progressable progress,
                            org.apache.hadoop.fs.Options.ChecksumOpt checksumOpt,
                            boolean createParent) | 
| FSDataOutputStream | ViewFileSystem. createNonRecursive(Path f,
                                    FsPermission permission,
                                    EnumSet<CreateFlag> flags,
                                    int bufferSize,
                                    short replication,
                                    long blockSize,
                                    Progressable progress) | 
| Modifier and Type | Method and Description | 
|---|---|
| static org.apache.hadoop.io.SequenceFile.Writer | SequenceFile. createWriter(FileSystem fs,
                        Configuration conf,
                        Path name,
                        Class keyClass,
                        Class valClass,
                        int bufferSize,
                        short replication,
                        long blockSize,
                        org.apache.hadoop.io.SequenceFile.CompressionType compressionType,
                        CompressionCodec codec,
                        Progressable progress,
                        org.apache.hadoop.io.SequenceFile.Metadata metadata)Deprecated. 
 | 
| static org.apache.hadoop.io.SequenceFile.Writer | SequenceFile. createWriter(FileSystem fs,
                        Configuration conf,
                        Path name,
                        Class keyClass,
                        Class valClass,
                        org.apache.hadoop.io.SequenceFile.CompressionType compressionType,
                        CompressionCodec codec,
                        Progressable progress)Deprecated. 
 | 
| static org.apache.hadoop.io.SequenceFile.Writer | SequenceFile. createWriter(FileSystem fs,
                        Configuration conf,
                        Path name,
                        Class keyClass,
                        Class valClass,
                        org.apache.hadoop.io.SequenceFile.CompressionType compressionType,
                        CompressionCodec codec,
                        Progressable progress,
                        org.apache.hadoop.io.SequenceFile.Metadata metadata)Deprecated. 
 | 
| static org.apache.hadoop.io.SequenceFile.Writer | SequenceFile. createWriter(FileSystem fs,
                        Configuration conf,
                        Path name,
                        Class keyClass,
                        Class valClass,
                        org.apache.hadoop.io.SequenceFile.CompressionType compressionType,
                        Progressable progress)Deprecated. 
 | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | ReporterA facility for Map-Reduce applications to report progress and update 
 counters, status information etc. | 
| Modifier and Type | Method and Description | 
|---|---|
| Progressable | JobContext. getProgressible()Get the progress mechanism for reporting progress. | 
| Progressable | TaskAttemptContext. getProgressible() | 
| Modifier and Type | Method and Description | 
|---|---|
| RecordWriter<K,V> | OutputFormat. getRecordWriter(FileSystem ignored,
                              JobConf job,
                              String name,
                              Progressable progress)Get the  RecordWriterfor the given job. | 
| RecordWriter<WritableComparable,Writable> | MapFileOutputFormat. getRecordWriter(FileSystem ignored,
                              JobConf job,
                              String name,
                              Progressable progress) | 
| RecordWriter<K,V> | SequenceFileOutputFormat. getRecordWriter(FileSystem ignored,
                              JobConf job,
                              String name,
                              Progressable progress) | 
| abstract RecordWriter<K,V> | FileOutputFormat. getRecordWriter(FileSystem ignored,
                              JobConf job,
                              String name,
                              Progressable progress) | 
| RecordWriter<K,V> | TextOutputFormat. getRecordWriter(FileSystem ignored,
                              JobConf job,
                              String name,
                              Progressable progress) | 
| RecordWriter<BytesWritable,BytesWritable> | SequenceFileAsBinaryOutputFormat. getRecordWriter(FileSystem ignored,
                              JobConf job,
                              String name,
                              Progressable progress) | 
| Modifier and Type | Method and Description | 
|---|---|
| protected abstract RecordWriter<K,V> | MultipleOutputFormat. getBaseRecordWriter(FileSystem fs,
                                      JobConf job,
                                      String name,
                                      Progressable arg3) | 
| protected RecordWriter<K,V> | MultipleSequenceFileOutputFormat. getBaseRecordWriter(FileSystem fs,
                                      JobConf job,
                                      String name,
                                      Progressable arg3) | 
| protected RecordWriter<K,V> | MultipleTextOutputFormat. getBaseRecordWriter(FileSystem fs,
                                      JobConf job,
                                      String name,
                                      Progressable arg3) | 
| RecordWriter<K,V> | FilterOutputFormat. getRecordWriter(FileSystem ignored,
                              JobConf job,
                              String name,
                              Progressable progress) | 
| RecordWriter<K,V> | LazyOutputFormat. getRecordWriter(FileSystem ignored,
                              JobConf job,
                              String name,
                              Progressable progress) | 
| RecordWriter<K,V> | MultipleOutputFormat. getRecordWriter(FileSystem fs,
                              JobConf job,
                              String name,
                              Progressable arg3)Create a composite record writer that can write key/value data to different
 output files | 
| RecordWriter<K,V> | NullOutputFormat. getRecordWriter(FileSystem ignored,
                              JobConf job,
                              String name,
                              Progressable progress) | 
| Modifier and Type | Method and Description | 
|---|---|
| RecordWriter<K,V> | DBOutputFormat. getRecordWriter(FileSystem filesystem,
                              JobConf job,
                              String name,
                              Progressable progress)Get the  RecordWriterfor the given job. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MapContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT>The context that is given to the  Mapper. | 
| interface  | ReduceContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT>The context passed to the  Reducer. | 
| interface  | TaskAttemptContextThe context for task attempts. | 
| interface  | TaskInputOutputContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT>A context object that allows input and output from the task. | 
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