Package org.apache.lucene.replicator.nrt

Class PrimaryNode

java.lang.Object

org.apache.lucene.replicator.nrt.Node

org.apache.lucene.replicator.nrt.PrimaryNode

All Implemented Interfaces:

Closeable, AutoCloseable

public abstract class PrimaryNode
extends Node

Node that holds an IndexWriter, indexing documents into its local index.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Field Summary

Fields

Modifier and Type	Field	Description
protected final long	primaryGen
protected final IndexWriter	writer

Fields inherited from class org.apache.lucene.replicator.nrt.Node

dir, globalStartNS, id, lastFileMetaData, localStartNS, mgr, PRIMARY_GEN_KEY, printStream, searcherFactory, VERBOSE_CONNECTIONS, VERBOSE_FILES, VERSION_KEY

Constructor Summary

Constructors

Constructor	Description
PrimaryNode(IndexWriter writer, int id, long primaryGen, long forcePrimaryVersion, SearcherFactory searcherFactory, PrintStream printStream)

Method Summary

Modifier and Type	Method	Description
void	close()
void	commit()
boolean	flushAndRefresh()	Flush all index operations to disk and opens a new near-real-time reader.
CopyState	getCopyState()	IncRef the current CopyState and return it
long	getCopyStateVersion()
long	getLastCommitVersion()
long	getPrimaryGen()	Returns the current primary generation, which is incremented each time a new primary is started for this index
boolean	isClosed()
protected abstract void	preCopyMergedSegmentFiles(SegmentCommitInfo info, Map<String,FileMetaData> files)	Called when a merge has finished, but before IW switches to the merged segment
void	releaseCopyState(CopyState copyState)	Called once replica is done (or failed) copying an NRT point

Methods inherited from class org.apache.lucene.replicator.nrt.Node

bytesToString, getCurrentSearchingVersion, getDirectory, getSearcherManager, message, name, nodeMessage, nodeMessage, readLocalFileMetaData, toString

Methods inherited from class java.lang.Object

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

Field Details

writer

protected final IndexWriter writer

primaryGen

protected final long primaryGen

Constructor Details

PrimaryNode

public PrimaryNode(IndexWriter writer,
 int id,
 long primaryGen,
 long forcePrimaryVersion,
 SearcherFactory searcherFactory,
 PrintStream printStream)
            throws IOException

Throws:

IOException

Method Details

getPrimaryGen

public long getPrimaryGen()

Returns the current primary generation, which is incremented each time a new primary is started for this index

flushAndRefresh

public boolean flushAndRefresh()
                        throws IOException

Flush all index operations to disk and opens a new near-real-time reader. new NRT point, to make the changes visible to searching. Returns true if there were changes.

Throws:

IOException

getCopyStateVersion

public long getCopyStateVersion()

getLastCommitVersion

public long getLastCommitVersion()

commit

public void commit()
            throws IOException

Specified by:

commit in class Node

Throws:

IOException

getCopyState

public CopyState getCopyState()
                       throws IOException

IncRef the current CopyState and return it

Throws:

IOException

releaseCopyState

public void releaseCopyState(CopyState copyState)
                      throws IOException

Called once replica is done (or failed) copying an NRT point

Throws:

IOException

isClosed

public boolean isClosed()

Specified by:

isClosed in class Node

close

public void close()
           throws IOException

Throws:

IOException

preCopyMergedSegmentFiles

protected abstract void preCopyMergedSegmentFiles(SegmentCommitInfo info,
 Map<String,FileMetaData> files)
                                           throws IOException

Called when a merge has finished, but before IW switches to the merged segment

Throws:

IOException