public class InMemoryConfigurationStore extends YarnConfigurationStore
YarnConfigurationStore
. Doesn't offer
persistent configuration storage, just stores the configuration in memory.YarnConfigurationStore.LogMutation
LOG
Constructor and Description |
---|
InMemoryConfigurationStore() |
Modifier and Type | Method and Description |
---|---|
void |
checkVersion()
Configuration mutations not logged (i.e.
|
void |
close()
Closes the configuration store, releasing any required resources.
|
void |
confirmMutation(YarnConfigurationStore.LogMutation pendingMutation,
boolean isValid)
Should be called after
logMutation . |
void |
format()
Format the persisted configuration.
|
long |
getConfigVersion()
Get the last updated config version.
|
List<YarnConfigurationStore.LogMutation> |
getConfirmedConfHistory(long fromId)
Configuration mutations not logged (i.e.
|
org.apache.hadoop.yarn.server.records.Version |
getConfStoreVersion()
Configuration mutations applied directly in-memory.
|
org.apache.hadoop.yarn.server.records.Version |
getCurrentVersion()
Configuration mutations not logged (i.e.
|
protected LinkedList<YarnConfigurationStore.LogMutation> |
getLogs()
Configuration mutations not logged (i.e.
|
void |
initialize(org.apache.hadoop.conf.Configuration conf,
org.apache.hadoop.conf.Configuration schedConf,
RMContext rmContext)
Initialize the configuration store, with schedConf as the initial
scheduler configuration.
|
void |
logMutation(YarnConfigurationStore.LogMutation logMutation)
This method does not log as it does not support backing store.
|
org.apache.hadoop.conf.Configuration |
retrieve()
Retrieve the persisted configuration.
|
void |
storeVersion()
Configuration mutations not logged (i.e.
|
public void initialize(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.conf.Configuration schedConf, RMContext rmContext)
YarnConfigurationStore
initialize
in class YarnConfigurationStore
conf
- configuration to initialize store withschedConf
- Initial key-value scheduler configuration to persist.rmContext
- RMContext for this configuration storepublic void logMutation(YarnConfigurationStore.LogMutation logMutation)
logMutation
in class YarnConfigurationStore
logMutation
- configuration change to be persisted in write ahead logpublic void confirmMutation(YarnConfigurationStore.LogMutation pendingMutation, boolean isValid)
YarnConfigurationStore
logMutation
. Gets the pending mutation
last logged by logMutation
and marks the mutation as persisted (no
longer pending). If isValid is true, merge the mutation with the persisted
configuration.confirmMutation
in class YarnConfigurationStore
pendingMutation
- the log mutation to applyisValid
- if true, update persisted configuration with pending
mutation.public void format()
YarnConfigurationStore
format
in class YarnConfigurationStore
public org.apache.hadoop.conf.Configuration retrieve()
YarnConfigurationStore
retrieve
in class YarnConfigurationStore
public long getConfigVersion()
YarnConfigurationStore
getConfigVersion
in class YarnConfigurationStore
public List<YarnConfigurationStore.LogMutation> getConfirmedConfHistory(long fromId)
getConfirmedConfHistory
in class YarnConfigurationStore
fromId
- id from which to start getting mutations, inclusiveprotected LinkedList<YarnConfigurationStore.LogMutation> getLogs()
getLogs
in class YarnConfigurationStore
public org.apache.hadoop.yarn.server.records.Version getConfStoreVersion() throws Exception
getConfStoreVersion
in class YarnConfigurationStore
Exception
public void storeVersion() throws Exception
storeVersion
in class YarnConfigurationStore
Exception
public org.apache.hadoop.yarn.server.records.Version getCurrentVersion()
getCurrentVersion
in class YarnConfigurationStore
public void checkVersion()
checkVersion
in class YarnConfigurationStore
public void close() throws IOException
YarnConfigurationStore
close
in class YarnConfigurationStore
IOException
- on failure to closeCopyright © 2008–2023 Apache Software Foundation. All rights reserved.