public class FSSchedulerConfigurationStore extends YarnConfigurationStore
YarnConfigurationStore. Offer
configuration storage in FileSystemYarnConfigurationStore.LogMutation| Modifier and Type | Field and Description |
|---|---|
protected static org.apache.hadoop.yarn.server.records.Version |
CURRENT_VERSION_INFO |
static org.slf4j.Logger |
LOG |
| Constructor and Description |
|---|
FSSchedulerConfigurationStore() |
| Modifier and Type | Method and Description |
|---|---|
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)
Get a list of confirmed configuration mutations starting from a given id.
|
protected org.apache.hadoop.yarn.server.records.Version |
getConfStoreVersion()
Get schema version of persisted conf store, for detecting compatibility
issues when changing conf store schema.
|
protected org.apache.hadoop.yarn.server.records.Version |
getCurrentVersion()
Get the hard-coded schema version, for comparison against the schema
version currently persisted.
|
protected LinkedList<YarnConfigurationStore.LogMutation> |
getLogs()
Get a list of configuration mutations.
|
void |
initialize(org.apache.hadoop.conf.Configuration fsConf,
org.apache.hadoop.conf.Configuration vSchedConf,
RMContext rmContext)
Initialize the configuration store, with schedConf as the initial
scheduler configuration.
|
void |
logMutation(YarnConfigurationStore.LogMutation logMutation)
Update and persist latest configuration in temp file.
|
org.apache.hadoop.conf.Configuration |
retrieve()
Retrieve the persisted configuration.
|
protected void |
storeVersion()
Persist the hard-coded schema version to the conf store.
|
checkVersionpublic static final org.slf4j.Logger LOG
protected static final org.apache.hadoop.yarn.server.records.Version CURRENT_VERSION_INFO
public void initialize(org.apache.hadoop.conf.Configuration fsConf,
org.apache.hadoop.conf.Configuration vSchedConf,
RMContext rmContext)
throws Exception
YarnConfigurationStoreinitialize in class YarnConfigurationStorefsConf - configuration to initialize store withvSchedConf - Initial key-value scheduler configuration to persist.rmContext - RMContext for this configuration storeIOException - if initialization failsExceptionpublic void logMutation(YarnConfigurationStore.LogMutation logMutation) throws IOException
logMutation in class YarnConfigurationStorelogMutation - configuration change to be persisted in write ahead logIOException - throw IOE when write temp configuration file failpublic void confirmMutation(YarnConfigurationStore.LogMutation pendingMutation, boolean isValid) throws Exception
YarnConfigurationStorelogMutation. 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 YarnConfigurationStorependingMutation - the log mutation to applyisValid - if true, finalize temp configuration file
if false, remove temp configuration file and rollbackException - throw IOE when write temp configuration file failpublic void format()
throws Exception
YarnConfigurationStoreformat in class YarnConfigurationStoreIOException - on failure to formatExceptionpublic long getConfigVersion()
throws Exception
YarnConfigurationStoregetConfigVersion in class YarnConfigurationStoreExceptionpublic org.apache.hadoop.conf.Configuration retrieve()
throws IOException
YarnConfigurationStoreretrieve in class YarnConfigurationStoreIOExceptionpublic List<YarnConfigurationStore.LogMutation> getConfirmedConfHistory(long fromId)
YarnConfigurationStoregetConfirmedConfHistory in class YarnConfigurationStorefromId - id from which to start getting mutations, inclusiveprotected LinkedList<YarnConfigurationStore.LogMutation> getLogs()
YarnConfigurationStoregetLogs in class YarnConfigurationStoreprotected org.apache.hadoop.yarn.server.records.Version getConfStoreVersion()
throws Exception
YarnConfigurationStoregetConfStoreVersion in class YarnConfigurationStoreException - On version fetch failureprotected void storeVersion()
throws Exception
YarnConfigurationStorestoreVersion in class YarnConfigurationStoreException - On storage failureprotected org.apache.hadoop.yarn.server.records.Version getCurrentVersion()
YarnConfigurationStoregetCurrentVersion in class YarnConfigurationStorepublic void close()
throws IOException
YarnConfigurationStoreclose in class YarnConfigurationStoreIOException - on failure to closeCopyright © 2008–2023 Apache Software Foundation. All rights reserved.