Package org.apache.hadoop.fs

Class Options.OpenFileOptions

java.lang.Object

org.apache.hadoop.fs.Options.OpenFileOptions

Enclosing class:

Options

@Public
@Evolving
public static final class Options.OpenFileOptions
extends java.lang.Object

The standard openFile() options.

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	FS_OPTION_OPENFILE	Prefix for all openFile options: "fs.option.openfile.".
static java.lang.String	FS_OPTION_OPENFILE_BUFFER_SIZE	OpenFile option for buffer size: "fs.option.openfile.buffer.size".
static java.lang.String	FS_OPTION_OPENFILE_FOOTER_CACHE	OpenFile footer cache flag: "fs.option.openfile.footer.cache".
static java.lang.String	FS_OPTION_OPENFILE_LENGTH	OpenFile option for file length: "fs.option.openfile.length".
static java.util.Set<java.lang.String>	FS_OPTION_OPENFILE_READ_POLICIES	All the current read policies as a set.
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY	OpenFile option for read policies: "fs.option.openfile.read.policy".
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_ADAPTIVE	Read policy for adaptive IO: "adaptive".
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_AVRO	We are an avro file: "avro".
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_COLUMNAR	This is a columnar file format.
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_CSV	This is a CSV file of plain or UTF-8 text to be read sequentially.
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_DEFAULT	Read policy "default" -whatever the implementation does by default.
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_HBASE	This is a table file for Apache HBase.
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_JSON	This is a JSON file of UTF-8 text, including a JSON line file where each line is a JSON entity.
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_ORC	This is an ORC file.
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_PARQUET	This is a parquet file with a v1/v3 footer: "parquet".
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_RANDOM	Read policy for random IO: "random".
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_SEQUENTIAL	Read policy for sequential IO: "sequential".
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_VECTOR	Vectored IO API to be used: "vector".
static java.lang.String	FS_OPTION_OPENFILE_READ_POLICY_WHOLE_FILE	Whole file to be read, end-to-end: "whole-file".
static java.lang.String	FS_OPTION_OPENFILE_SPLIT_END	OpenFile option for split end: "fs.option.openfile.split.end".
static java.lang.String	FS_OPTION_OPENFILE_SPLIT_START	OpenFile option for split start: "fs.option.openfile.split.start".
static java.util.Set<java.lang.String>	FS_OPTION_OPENFILE_STANDARD_OPTIONS	Set of standard options which openFile implementations MUST recognize, even if they ignore the actual values.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

FS_OPTION_OPENFILE

public static final java.lang.String FS_OPTION_OPENFILE

Prefix for all openFile options: "fs.option.openfile.".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_LENGTH

public static final java.lang.String FS_OPTION_OPENFILE_LENGTH

OpenFile option for file length: "fs.option.openfile.length".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_SPLIT_START

public static final java.lang.String FS_OPTION_OPENFILE_SPLIT_START

OpenFile option for split start: "fs.option.openfile.split.start".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_SPLIT_END

public static final java.lang.String FS_OPTION_OPENFILE_SPLIT_END

OpenFile option for split end: "fs.option.openfile.split.end".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_BUFFER_SIZE

public static final java.lang.String FS_OPTION_OPENFILE_BUFFER_SIZE

OpenFile option for buffer size: "fs.option.openfile.buffer.size".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_FOOTER_CACHE

public static final java.lang.String FS_OPTION_OPENFILE_FOOTER_CACHE

OpenFile footer cache flag: "fs.option.openfile.footer.cache".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY

OpenFile option for read policies: "fs.option.openfile.read.policy".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_STANDARD_OPTIONS

public static final java.util.Set<java.lang.String> FS_OPTION_OPENFILE_STANDARD_OPTIONS

Set of standard options which openFile implementations MUST recognize, even if they ignore the actual values.

FS_OPTION_OPENFILE_READ_POLICY_ADAPTIVE

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_ADAPTIVE

Read policy for adaptive IO: "adaptive".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_AVRO

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_AVRO

We are an avro file: "avro".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_COLUMNAR

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_COLUMNAR

This is a columnar file format. Do whatever is needed to optimize for it: "columnar".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_CSV

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_CSV

This is a CSV file of plain or UTF-8 text to be read sequentially. Do whatever is needed to optimize for it: "csv".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_DEFAULT

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_DEFAULT

Read policy "default" -whatever the implementation does by default.

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_HBASE

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_HBASE

This is a table file for Apache HBase. Do whatever is needed to optimize for it: "hbase".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_JSON

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_JSON

This is a JSON file of UTF-8 text, including a JSON line file where each line is a JSON entity. Do whatever is needed to optimize for it: "json".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_ORC

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_ORC

This is an ORC file. Do whatever is needed to optimize for it: "orc".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_PARQUET

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_PARQUET

This is a parquet file with a v1/v3 footer: "parquet". Do whatever is needed to optimize for it, such as footer prefetch and cache,

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_RANDOM

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_RANDOM

Read policy for random IO: "random".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_SEQUENTIAL

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_SEQUENTIAL

Read policy for sequential IO: "sequential".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_VECTOR

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_VECTOR

Vectored IO API to be used: "vector".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICY_WHOLE_FILE

public static final java.lang.String FS_OPTION_OPENFILE_READ_POLICY_WHOLE_FILE

Whole file to be read, end-to-end: "whole-file".

See Also:

Constant Field Values

FS_OPTION_OPENFILE_READ_POLICIES

public static final java.util.Set<java.lang.String> FS_OPTION_OPENFILE_READ_POLICIES

All the current read policies as a set.