Package org.apache.solr.common.cloud

Class DocCollection

  • All Implemented Interfaces:
    Iterable<Slice>, org.noggit.JSONWriter.Writable
    public class DocCollection
extends ZkNodeProps
implements Iterable<Slice>
    Models a Collection in zookeeper (but that Java name is obviously taken, hence "DocCollection")

    • Constructor Detail

      • DocCollection

        public DocCollection​(String name,
                     Map<String,​Slice> slices,
                     Map<String,​Object> props,
                     DocRouter router,
                     int zkVersion)
        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.
        zkVersion - The version of the Collection node in Zookeeper (used for conditional updates).

    • Method Detail

      • copyWith

        public DocCollection copyWith​(PerReplicaStates newPerReplicaStates)
        Update our state with a state of a Replica Used to create a new Collection State when only a replica is updated

      • 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.

      • getConfigName

        public String getConfigName()
        Return non-null config 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()

      • getChildNodesVersion

        public int getChildNodesVersion()

      • isModified

        public boolean isModified​(int dataVersion,
                          int childVersion)

      • getReplicationFactor

        public Integer getReplicationFactor()
        Returns:
        replication factor for this collection or null if no replication factor exists.

      • getZNode

        public String getZNode()

      • isReadOnly

        public boolean isReadOnly()

      • write

        public void write​(org.noggit.JSONWriter jsonWriter)
        Specified by:
        write in interface org.noggit.JSONWriter.Writable
        Overrides:
        write in class ZkNodeProps

      • getReplica

        public Replica getReplica​(String coreNodeName)

      • 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

      • getReplica

        public Replica getReplica​(BiPredicate<String,​Replica> predicate)
        Parameters:
        predicate - test against shardName vs. replica
        Returns:
        the first replica that matches the predicate

      • getShardId

        public String getShardId​(String nodeName,
                         String coreName)
        Get the shardId of a core on a specific node

      • 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

      • isPerReplicaState

        public boolean isPerReplicaState()

      • getExpectedReplicaCount

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