LinkedMapWritable (Elasticsearch for Apache Hadoop 5.0.0-rc1 API)

java.lang.Object
- org.apache.hadoop.io.AbstractMapWritable
- - org.apache.hadoop.io.MapWritable
  - - org.elasticsearch.hadoop.mr.LinkedMapWritable

All Implemented Interfaces:

java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>, org.apache.hadoop.conf.Configurable, org.apache.hadoop.io.Writable
```
public class LinkedMapWritable
extends org.apache.hadoop.io.MapWritable
```
Similar to MapWritable expect that it uses a LinkedHashMap underneath to preserve insertion order (and thus its structure). Extends MapWritable for compatibility reasons.

Nested Class Summary
- Nested classes/interfaces inherited from interface java.util.Map
  java.util.Map.Entry<K,V>

Constructor Summary

Constructors
Constructor and Description

LinkedMapWritable()
Default constructor.

LinkedMapWritable(org.apache.hadoop.io.MapWritable other)
Copy constructor.

Constructors
Constructor and Description
`LinkedMapWritable()` Default constructor.
`LinkedMapWritable(org.apache.hadoop.io.MapWritable other)` Copy constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`clear()`
`boolean`	`containsKey(java.lang.Object key)`
`boolean`	`containsValue(java.lang.Object value)`
`java.util.Set<java.util.Map.Entry<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>>`	`entrySet()`
`boolean`	`equals(java.lang.Object o)`
`org.apache.hadoop.io.Writable`	`get(java.lang.Object key)`
`int`	`hashCode()`
`boolean`	`isEmpty()`
`java.util.Set<org.apache.hadoop.io.Writable>`	`keySet()`
`org.apache.hadoop.io.Writable`	`put(org.apache.hadoop.io.Writable key, org.apache.hadoop.io.Writable value)`
`void`	`putAll(java.util.Map<? extends org.apache.hadoop.io.Writable,? extends org.apache.hadoop.io.Writable> t)`
`void`	`readFields(java.io.DataInput in)`
`org.apache.hadoop.io.Writable`	`remove(java.lang.Object key)`
`int`	`size()`
`java.lang.String`	`toString()`
`java.util.Collection<org.apache.hadoop.io.Writable>`	`values()`
`void`	`write(java.io.DataOutput out)`

Methods inherited from class org.apache.hadoop.io.AbstractMapWritable
addToMap, copy, getClass, getConf, getId, setConf

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

- Constructor Detail
  - LinkedMapWritable
```
public LinkedMapWritable()
```
    Default constructor.
  - LinkedMapWritable
```
public LinkedMapWritable(org.apache.hadoop.io.MapWritable other)
```
    Copy constructor.
    
    Parameters:
    
    other - the map to copy from
- Method Detail
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    clear in class org.apache.hadoop.io.MapWritable
  - containsKey
```
public boolean containsKey(java.lang.Object key)
```
    Specified by:
    
    containsKey in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    containsKey in class org.apache.hadoop.io.MapWritable
  - containsValue
```
public boolean containsValue(java.lang.Object value)
```
    Specified by:
    
    containsValue in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    containsValue in class org.apache.hadoop.io.MapWritable
  - entrySet
```
public java.util.Set<java.util.Map.Entry<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>> entrySet()
```
    Specified by:
    
    entrySet in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    entrySet in class org.apache.hadoop.io.MapWritable
  - get
```
public org.apache.hadoop.io.Writable get(java.lang.Object key)
```
    Specified by:
    
    get in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    get in class org.apache.hadoop.io.MapWritable
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    isEmpty in class org.apache.hadoop.io.MapWritable
  - keySet
```
public java.util.Set<org.apache.hadoop.io.Writable> keySet()
```
    Specified by:
    
    keySet in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    keySet in class org.apache.hadoop.io.MapWritable
  - put
```
public org.apache.hadoop.io.Writable put(org.apache.hadoop.io.Writable key,
                                         org.apache.hadoop.io.Writable value)
```
    Specified by:
    
    put in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    put in class org.apache.hadoop.io.MapWritable
  - putAll
```
public void putAll(java.util.Map<? extends org.apache.hadoop.io.Writable,? extends org.apache.hadoop.io.Writable> t)
```
    Specified by:
    
    putAll in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    putAll in class org.apache.hadoop.io.MapWritable
  - remove
```
public org.apache.hadoop.io.Writable remove(java.lang.Object key)
```
    Specified by:
    
    remove in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    remove in class org.apache.hadoop.io.MapWritable
  - size
```
public int size()
```
    Specified by:
    
    size in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    size in class org.apache.hadoop.io.MapWritable
  - values
```
public java.util.Collection<org.apache.hadoop.io.Writable> values()
```
    Specified by:
    
    values in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    values in class org.apache.hadoop.io.MapWritable
  - write
```
public void write(java.io.DataOutput out)
           throws java.io.IOException
```
    Specified by:
    
    write in interface org.apache.hadoop.io.Writable
    
    Overrides:
    
    write in class org.apache.hadoop.io.MapWritable
    
    Throws:
    
    java.io.IOException
  - readFields
```
public void readFields(java.io.DataInput in)
                throws java.io.IOException
```
    Specified by:
    
    readFields in interface org.apache.hadoop.io.Writable
    
    Overrides:
    
    readFields in class org.apache.hadoop.io.MapWritable
    
    Throws:
    
    java.io.IOException
  - equals
```
public boolean equals(java.lang.Object o)
```
    Specified by:
    
    equals in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in interface java.util.Map<org.apache.hadoop.io.Writable,org.apache.hadoop.io.Writable>
    
    Overrides:
    
    hashCode in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object

Class LinkedMapWritable

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Constructor Summary

Method Summary

Methods inherited from class org.apache.hadoop.io.AbstractMapWritable

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Constructor Detail

LinkedMapWritable

LinkedMapWritable

Method Detail

clear

containsKey

containsValue

entrySet

get

isEmpty

keySet

put

putAll

remove

size

values

write

readFields

equals

hashCode

toString