org.apache.solr.common.cloud

Class DocCollection

java.lang.Object

org.apache.solr.common.cloud.ZkNodeProps

org.apache.solr.common.cloud.DocCollection

All Implemented Interfaces:

Iterable<Slice>, JSONWriter.Writable

public class DocCollection
extends ZkNodeProps
implements Iterable<Slice>

Models a Collection in zookeeper (but that Java name is obviously taken, hence "DocCollection")

Field Summary

Fields

Modifier and Type	Field and Description
static String	DOC_ROUTER
static String	RULE Deprecated. to be removed in Solr 9.0 (see SOLR-14930)
static String	SHARDS
static String	SNITCH Deprecated. to be removed in Solr 9.0 (see SOLR-14930)
static String	STATE_FORMAT

Fields inherited from class org.apache.solr.common.cloud.ZkNodeProps

propMap

Constructor Summary

Constructors

Constructor and Description
DocCollection(String name, Map<String,Slice> slices, Map<String,Object> props, DocRouter router)
DocCollection(String name, Map<String,Slice> slices, Map<String,Object> props, DocRouter router, int zkVersion, String znode)

Method Summary

Modifier and Type	Method and Description
DocCollection	copyWithSlices(Map<String,Slice> slices) Use this to make an exact copy of DocCollection with a new set of Slices and every other property as is
boolean	equals(Object that)
void	forEachReplica(BiConsumer<String,Replica> consumer)
Collection<Slice>	getActiveSlices() Return the list of active slices for this collection.
Slice[]	getActiveSlicesArr() Return array of active slices for this collection (performance optimization).
Map<String,Slice>	getActiveSlicesMap() Get the map of active slices (sliceName->Slice) for this collection.
boolean	getAutoAddReplicas()
int	getExpectedReplicaCount(Replica.Type type, int def)
Replica	getLeader(String sliceName)
List<Replica>	getLeaderReplicas(String nodeName) Get the list of all leaders hosted on the given node or null if none.
int	getMaxShardsPerNode()
String	getName() Return collection name.
Integer	getNumNrtReplicas()
Integer	getNumPullReplicas()
Integer	getNumTlogReplicas()
String	getPolicyName()
Replica	getReplica(BiPredicate<String,Replica> predicate)
Replica	getReplica(String coreNodeName)
List<Replica>	getReplicas()
List<Replica>	getReplicas(EnumSet<Replica.Type> s)
List<Replica>	getReplicas(String nodeName) Get the list of replicas hosted on the given node or null if none.
Integer	getReplicationFactor()
DocRouter	getRouter()
String	getShardId(String nodeName, String coreName) Get the shardId of a core on a specific node
Slice	getSlice(String sliceName)
Collection<Slice>	getSlices() Gets the list of all slices for this collection.
Map<String,Slice>	getSlicesMap() Get the map of all slices (sliceName->Slice) for this collection.
int	getStateFormat()
String	getZNode()
int	getZNodeVersion()
int	hashCode()
static boolean	isFullyActive(Set<String> liveNodes, DocCollection collectionState, int expectedShards, int expectedReplicas) Check that all replicas in a collection are live
boolean	isReadOnly()
Iterator<Slice>	iterator()
String	toString()
static Object	verifyProp(Map<String,Object> props, String propName)
static Object	verifyProp(Map<String,Object> props, String propName, Object def)
void	write(JSONWriter jsonWriter)

Methods inherited from class org.apache.solr.common.cloud.ZkNodeProps

containsKey, fromKeyVals, get, getBool, getInt, getProperties, getStr, getStr, keySet, load, plus, plus, shallowCopy

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

DOC_ROUTER

public static final String DOC_ROUTER

See Also:

Constant Field Values

SHARDS

public static final String SHARDS

See Also:

Constant Field Values

STATE_FORMAT

public static final String STATE_FORMAT

See Also:

Constant Field Values

RULE

public static final String RULE

Deprecated. to be removed in Solr 9.0 (see SOLR-14930)

See Also:

Constant Field Values

SNITCH

public static final String SNITCH

Deprecated. to be removed in Solr 9.0 (see SOLR-14930)

See Also:

Constant Field Values

Constructor Detail

DocCollection

public DocCollection(String name,
                     Map<String,Slice> slices,
                     Map<String,Object> props,
                     DocRouter router)

DocCollection

public DocCollection(String name,
                     Map<String,Slice> slices,
                     Map<String,Object> props,
                     DocRouter router,
                     int zkVersion,
                     String znode)

Parameters:

name - The name of the collection

slices - The logical shards of the collection. This is used directly and a copy is not made.

props - The properties of the slice. This is used directly and a copy is not made.

Method Detail

verifyProp

public static Object verifyProp(Map<String,Object> props,
                                String propName)

verifyProp

public static Object verifyProp(Map<String,Object> props,
                                String propName,
                                Object def)

copyWithSlices

public DocCollection copyWithSlices(Map<String,Slice> slices)

Use this to make an exact copy of DocCollection with a new set of Slices and every other property as is

Parameters:

slices - the new set of Slices

Returns:

the resulting DocCollection

getName

public String getName()

Return collection name.

getSlice

public Slice getSlice(String sliceName)

forEachReplica

public void forEachReplica(BiConsumer<String,Replica> consumer)

Parameters:

consumer - consume shardName vs. replica

getSlices

public Collection<Slice> getSlices()

Gets the list of all slices for this collection.

getActiveSlices

public Collection<Slice> getActiveSlices()

Return the list of active slices for this collection.

getActiveSlicesArr

public Slice[] getActiveSlicesArr()

Return array of active slices for this collection (performance optimization).

getSlicesMap

public Map<String,Slice> getSlicesMap()

Get the map of all slices (sliceName->Slice) for this collection.

getActiveSlicesMap

public Map<String,Slice> getActiveSlicesMap()

Get the map of active slices (sliceName->Slice) for this collection.

getReplicas

public List<Replica> getReplicas(String nodeName)

Get the list of replicas hosted on the given node or null if none.

getLeaderReplicas

public List<Replica> getLeaderReplicas(String nodeName)

Get the list of all leaders hosted on the given node or null if none.

getZNodeVersion

public int getZNodeVersion()

getStateFormat

public int getStateFormat()

getReplicationFactor

public Integer getReplicationFactor()

Returns:

replication factor for this collection or null if no replication factor exists.

getAutoAddReplicas

public boolean getAutoAddReplicas()

getMaxShardsPerNode

public int getMaxShardsPerNode()

getZNode

public String getZNode()

getRouter

public DocRouter getRouter()

isReadOnly

public boolean isReadOnly()

toString

public String toString()

Overrides:

toString in class ZkNodeProps

write

public void write(JSONWriter jsonWriter)

Specified by:

write in interface JSONWriter.Writable

Overrides:

write in class ZkNodeProps

getReplica

public Replica getReplica(String coreNodeName)

getLeader

public Replica getLeader(String sliceName)

isFullyActive

public static boolean isFullyActive(Set<String> liveNodes,
                                    DocCollection collectionState,
                                    int expectedShards,
                                    int expectedReplicas)

Check that all replicas in a collection are live

See Also:

CollectionStatePredicate

iterator

public Iterator<Slice> iterator()

Specified by:

iterator in interface Iterable<Slice>

getReplicas

public List<Replica> getReplicas()

getReplica

public Replica getReplica(BiPredicate<String,Replica> predicate)

Parameters:

predicate - test against shardName vs. replica

Returns:

the first replica that matches the predicate

getReplicas

public List<Replica> getReplicas(EnumSet<Replica.Type> s)

getShardId

public String getShardId(String nodeName,
                         String coreName)

Get the shardId of a core on a specific node

equals

public boolean equals(Object that)

Overrides:

equals in class ZkNodeProps

hashCode

public int hashCode()

Overrides:

hashCode in class ZkNodeProps

getNumNrtReplicas

public Integer getNumNrtReplicas()

Returns:

the number of replicas of type Replica.Type.NRT this collection was created with

getNumTlogReplicas

public Integer getNumTlogReplicas()

Returns:

the number of replicas of type Replica.Type.TLOG this collection was created with

getNumPullReplicas

public Integer getNumPullReplicas()

Returns:

the number of replicas of type Replica.Type.PULL this collection was created with

getPolicyName

public String getPolicyName()

Returns:

the policy associated with this collection if any

getExpectedReplicaCount

public int getExpectedReplicaCount(Replica.Type type,
                                   int def)