@InterfaceAudience.Private public class CompoundConfiguration extends org.apache.hadoop.conf.Configuration
The iterator on CompoundConfiguration is unmodifiable. Obtaining iterator is an expensive operation.
For clarity: the shallow merge allows the user to mutate either of the configuration objects and have changes reflected everywhere. In contrast to a deep merge, that requires you to explicitly know all applicable copies to propagate changes. WARNING: The values set in the CompoundConfiguration are do not handle Property variable substitution. However, if they are set in the underlying configuration substitutions are done.
Modifier and Type | Class and Description |
---|---|
private static interface |
CompoundConfiguration.ImmutableConfigMap |
(package private) static class |
CompoundConfiguration.ImmutableConfWrapper |
Modifier and Type | Field and Description |
---|---|
private List<CompoundConfiguration.ImmutableConfigMap> |
configs |
private org.apache.hadoop.conf.Configuration |
mutableConf |
Constructor and Description |
---|
CompoundConfiguration()
Default Constructor.
|
Modifier and Type | Method and Description |
---|---|
CompoundConfiguration |
add(org.apache.hadoop.conf.Configuration conf)
Add Hadoop Configuration object to config list.
|
CompoundConfiguration |
addBytesMap(Map<Bytes,Bytes> map)
Add Bytes map to config list.
|
CompoundConfiguration |
addStringMap(Map<String,String> map)
Add String map to config list.
|
void |
clear()
These methods are unsupported, and no code using CompoundConfiguration depend upon them.
|
(package private) void |
freezeMutableConf()
If set has been called, it will create a mutableConf.
|
String |
get(String key) |
String |
get(String name,
String defaultValue)
Get the value of the
name . |
Class<?> |
getClassByName(String name) |
String |
getRaw(String key) |
Iterator<Map.Entry<String,String>> |
iterator() |
void |
set(String name,
String value) |
int |
size() |
String |
toString() |
void |
write(DataOutput out) |
void |
writeXml(OutputStream out) |
addDefaultResource, addDeprecation, addDeprecation, addDeprecation, addDeprecation, addDeprecations, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, dumpConfiguration, dumpConfiguration, dumpDeprecatedKeys, getBoolean, getClass, getClass, getClassByNameOrNull, getClasses, getClassLoader, getConfResourceAsInputStream, getConfResourceAsReader, getDouble, getEnum, getFile, getFinalParameters, getFloat, getInstances, getInt, getInts, getLocalPath, getLong, getLongBytes, getPassword, getPasswordFromConfig, getPasswordFromCredentialProviders, getPattern, getPropertySources, getProps, getPropsWithPrefix, getRange, getResource, getSocketAddr, getSocketAddr, getStringCollection, getStrings, getStrings, getTimeDuration, getTimeDuration, getTimeDurations, getTrimmed, getTrimmed, getTrimmedStringCollection, getTrimmedStrings, getTrimmedStrings, getValByRegex, hasWarnedDeprecation, isDeprecated, main, onlyKeyExists, readFields, reloadConfiguration, reloadExistingConfigurations, set, setAllowNullValueProperties, setBoolean, setBooleanIfUnset, setClass, setClassLoader, setDeprecatedProperties, setDouble, setEnum, setFloat, setIfUnset, setInt, setLong, setPattern, setQuietMode, setRestrictSystemProperties, setRestrictSystemPropertiesDefault, setRestrictSystemProps, setSocketAddr, setStrings, setTimeDuration, unset, updateConnectAddr, updateConnectAddr, writeXml, writeXml
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
forEach, spliterator
private org.apache.hadoop.conf.Configuration mutableConf
private final List<CompoundConfiguration.ImmutableConfigMap> configs
public CompoundConfiguration()
void freezeMutableConf()
public CompoundConfiguration add(org.apache.hadoop.conf.Configuration conf)
conf
- configuration objectpublic CompoundConfiguration addBytesMap(Map<Bytes,Bytes> map)
public CompoundConfiguration addStringMap(Map<String,String> map)
public String getRaw(String key)
getRaw
in class org.apache.hadoop.conf.Configuration
public Class<?> getClassByName(String name) throws ClassNotFoundException
getClassByName
in class org.apache.hadoop.conf.Configuration
ClassNotFoundException
public int size()
size
in class org.apache.hadoop.conf.Configuration
public String get(String name, String defaultValue)
name
. If the key is deprecated, it returns the value of the
first key which replaces the deprecated key and is not null. If no such property exists, then
defaultValue
is returned. The CompooundConfiguration does not do property
substitution. To do so we need Configuration.getProps to be protected or package visible.
Though in hadoop2 it is protected, in hadoop1 the method is private and not accessible. All of
the get* methods call this overridden get method.get
in class org.apache.hadoop.conf.Configuration
name
- property name.defaultValue
- default value.defaultValue
if the property doesn't exist.public void set(String name, String value)
set
in class org.apache.hadoop.conf.Configuration
public void clear()
clear
in class org.apache.hadoop.conf.Configuration
public void write(DataOutput out) throws IOException
write
in interface org.apache.hadoop.io.Writable
write
in class org.apache.hadoop.conf.Configuration
IOException
public void writeXml(OutputStream out) throws IOException
writeXml
in class org.apache.hadoop.conf.Configuration
IOException
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