public class ZKConfigurationStore extends YarnConfigurationStore
YarnConfigurationStore
.Modifier and Type | Field and Description |
---|---|
protected static org.apache.hadoop.yarn.server.records.Version |
CURRENT_VERSION_INFO |
static org.apache.commons.logging.Log |
LOG |
protected org.apache.hadoop.util.curator.ZKCuratorManager |
zkManager |
Constructor and Description |
---|
ZKConfigurationStore() |
Modifier and Type | Method and Description |
---|---|
void |
confirmMutation(boolean isValid)
Should be called after
logMutation . |
List<org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.YarnConfigurationStore.LogMutation> |
getConfirmedConfHistory(long fromId)
Get a list of confirmed configuration mutations starting from a given id.
|
org.apache.hadoop.yarn.server.records.Version |
getConfStoreVersion()
Get schema version of persisted conf store, for detecting compatibility
issues when changing conf store schema.
|
org.apache.hadoop.yarn.server.records.Version |
getCurrentVersion()
Get the hard-coded schema version, for comparison against the schema
version currently persisted.
|
protected LinkedList<org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.YarnConfigurationStore.LogMutation> |
getLogs() |
void |
initialize(org.apache.hadoop.conf.Configuration config,
org.apache.hadoop.conf.Configuration schedConf,
RMContext rmContext)
Initialize the configuration store, with schedConf as the initial
scheduler configuration.
|
void |
logMutation(org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.YarnConfigurationStore.LogMutation logMutation)
Logs the configuration change to backing store.
|
org.apache.hadoop.conf.Configuration |
retrieve()
Retrieve the persisted configuration.
|
void |
storeVersion()
Persist the hard-coded schema version to the conf store.
|
checkVersion, close
public static final org.apache.commons.logging.Log LOG
protected static final org.apache.hadoop.yarn.server.records.Version CURRENT_VERSION_INFO
protected org.apache.hadoop.util.curator.ZKCuratorManager zkManager
public void initialize(org.apache.hadoop.conf.Configuration config, org.apache.hadoop.conf.Configuration schedConf, RMContext rmContext) throws Exception
YarnConfigurationStore
initialize
in class YarnConfigurationStore
config
- configuration to initialize store withschedConf
- Initial key-value scheduler configuration to persist.rmContext
- RMContext for this configuration storeIOException
- if initialization failsException
protected LinkedList<org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.YarnConfigurationStore.LogMutation> getLogs() throws Exception
Exception
public org.apache.hadoop.yarn.server.records.Version getCurrentVersion()
YarnConfigurationStore
getCurrentVersion
in class YarnConfigurationStore
public org.apache.hadoop.yarn.server.records.Version getConfStoreVersion() throws Exception
YarnConfigurationStore
getConfStoreVersion
in class YarnConfigurationStore
Exception
- On version fetch failurepublic void storeVersion() throws Exception
YarnConfigurationStore
storeVersion
in class YarnConfigurationStore
Exception
- On storage failurepublic void logMutation(org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.YarnConfigurationStore.LogMutation logMutation) throws Exception
YarnConfigurationStore
logMutation
in class YarnConfigurationStore
logMutation
- configuration change to be persisted in write ahead logIOException
- if logging failsException
public void confirmMutation(boolean isValid) throws Exception
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
isValid
- if true, update persisted configuration with pending
mutation.Exception
- if mutation confirmation failspublic org.apache.hadoop.conf.Configuration retrieve()
YarnConfigurationStore
retrieve
in class YarnConfigurationStore
public List<org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.YarnConfigurationStore.LogMutation> getConfirmedConfHistory(long fromId)
YarnConfigurationStore
getConfirmedConfHistory
in class YarnConfigurationStore
fromId
- id from which to start getting mutations, inclusiveCopyright © 2022 Apache Software Foundation. All rights reserved.