Package com.google.gerrit.server.index

Class OnlineReindexer<K,V,I extends Index<K,V>>

java.lang.Object

com.google.gerrit.server.index.OnlineReindexer<K,V,I>

public class OnlineReindexer<K,V,I extends Index<K,V>>
extends Object

Background thread for running an index schema upgrade by reindexing all documents in an index using the new version. Intended to be run while Gerrit is serving traffic to prepare for a near-zero downtime upgrade.

Constructor Summary

Constructors

Constructor	Description
OnlineReindexer(IndexDefinition<K,V,I> def, int oldVersion, int newVersion, PluginSetContext<OnlineUpgradeListener> listeners, boolean reuseExistingDocuments)

Method Summary

Modifier and Type	Method	Description
void	activateIndex()	Switches the search index from the old version to the new version.
int	getVersion()	Returns the index version that this indexer is creating documents for.
boolean	isRunning()	Returns true if the background indexer is currently running.
void	start()	Starts the background process.

Methods inherited from class java.lang.Object

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

Constructor Details

OnlineReindexer

public OnlineReindexer(IndexDefinition<K,V,I> def,
 int oldVersion,
 int newVersion,
 PluginSetContext<OnlineUpgradeListener> listeners,
 boolean reuseExistingDocuments)

Method Details

start

public void start()

Starts the background process.

isRunning

public boolean isRunning()

Returns true if the background indexer is currently running.

getVersion

public int getVersion()

Returns the index version that this indexer is creating documents for.

activateIndex

public void activateIndex()

Switches the search index from the old version to the new version. This method should be called when the new version is fully ready.