Package org.apache.solr.cloud

Class ReplicateFromLeader

java.lang.Object

org.apache.solr.cloud.ReplicateFromLeader

public class ReplicateFromLeader
extends Object

Constructor Summary

Constructors

Constructor	Description
ReplicateFromLeader(CoreContainer cc, String coreName)

Method Summary

Modifier and Type	Method	Description
static String	determinePollInterval(SolrConfig.UpdateHandlerInfo uinfo)	Determine the poll interval for replicas based on the auto soft/hard commit schedule or configured commit poll interval
static String	getCommitVersion(SolrCore solrCore)
void	startReplication(boolean switchTransactionLog)	Start a replication handler thread that will periodically pull indices from the shard leader
void	stopReplication()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ReplicateFromLeader

public ReplicateFromLeader(CoreContainer cc,
 String coreName)

Method Details

startReplication

public void startReplication(boolean switchTransactionLog)

Start a replication handler thread that will periodically pull indices from the shard leader

This is separate from the ReplicationHandler that listens at /replication, used for recovery and leader actions. It is simpler to discard the entire polling ReplicationHandler rather then worrying about disabling polling and correctly setting all of the leader bits if we need to reset.

TODO: It may be cleaner to extract the polling logic use that directly instead of creating what might be a fairly heavyweight instance here.

Parameters:

switchTransactionLog - if true, ReplicationHandler will rotate the transaction log once the replication is done

getCommitVersion

public static String getCommitVersion(SolrCore solrCore)

determinePollInterval

public static String determinePollInterval(SolrConfig.UpdateHandlerInfo uinfo)

Determine the poll interval for replicas based on the auto soft/hard commit schedule or configured commit poll interval

Parameters:

uinfo - the update handler info containing soft/hard commit configuration

Returns:

a poll interval string representing a cadence of polling frequency in the form of hh:mm:ss, never null

stopReplication

public void stopReplication()