java.lang.Object
- org.apache.cassandra.dht.RangeStreamer

public class RangeStreamer
extends java.lang.Object

Assists in streaming ranges to this node.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`RangeStreamer.AllowedSourcesFilter`	Source filter which only includes endpoints contained within a provided set.
`static class`	`RangeStreamer.ExcludeLocalNodeFilter`	Source filter which excludes the current node from source calculations
`static class`	`RangeStreamer.FailureDetectorSourceFilter`	Source filter which excludes any endpoints that are not alive according to a failure detector.
`static class`	`RangeStreamer.FetchReplica`
`static class`	`RangeStreamer.SingleDatacenterFilter`	Source filter which excludes any endpoints that are not in a specific data center.
`static interface`	`RangeStreamer.SourceFilter`

Field Summary

Fields
Modifier and Type Field Description

static com.google.common.base.Predicate<Replica> ALIVE_PREDICATE

Constructor Summary

Constructors
Constructor	Description
`RangeStreamer(TokenMetadata metadata, java.util.Collection<Token> tokens, InetAddressAndPort address, StreamOperation streamOperation, boolean useStrictConsistency, IEndpointSnitch snitch, StreamStateStore stateStore, boolean connectSequentially, int connectionsPerHost)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addRanges(java.lang.String keyspaceName, ReplicaCollection<?> replicas)`	Add ranges to be streamed for given keyspace.
`void`	`addSourceFilter(RangeStreamer.SourceFilter filter)`
`static EndpointsByReplica`	`calculateRangesToFetchWithPreferredEndpoints(java.util.function.BiFunction<InetAddressAndPort,EndpointsForRange,EndpointsForRange> snitchGetSortedListByProximity, AbstractReplicationStrategy strat, ReplicaCollection<?> fetchRanges, boolean useStrictConsistency, TokenMetadata tmdBefore, TokenMetadata tmdAfter, java.lang.String keyspace, java.util.Collection<RangeStreamer.SourceFilter> sourceFilters)`	Get a map of all ranges and the source that will be cleaned up once this bootstrapped node is added for the given ranges.
`static com.google.common.collect.Multimap<InetAddressAndPort,RangeStreamer.FetchReplica>`	`convertPreferredEndpointsToWorkMap(EndpointsByReplica preferredEndpoints)`	The preferred endpoint list is the wrong format because it is keyed by Replica (this node) rather than the source endpoint we will fetch from which streaming wants.
`StreamResultFuture`	`fetchAsync()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ALIVE_PREDICATE

public static com.google.common.base.Predicate<Replica> ALIVE_PREDICATE

Constructor Detail

RangeStreamer

public RangeStreamer(TokenMetadata metadata,
                     java.util.Collection<Token> tokens,
                     InetAddressAndPort address,
                     StreamOperation streamOperation,
                     boolean useStrictConsistency,
                     IEndpointSnitch snitch,
                     StreamStateStore stateStore,
                     boolean connectSequentially,
                     int connectionsPerHost)

Method Detail

addSourceFilter

public void addSourceFilter(RangeStreamer.SourceFilter filter)

addRanges

public void addRanges(java.lang.String keyspaceName,
                      ReplicaCollection<?> replicas)

Add ranges to be streamed for given keyspace.

Parameters:: keyspaceName - keyspace name; replicas - ranges to be streamed

calculateRangesToFetchWithPreferredEndpoints

public static EndpointsByReplica calculateRangesToFetchWithPreferredEndpoints(java.util.function.BiFunction<InetAddressAndPort,EndpointsForRange,EndpointsForRange> snitchGetSortedListByProximity,
                                                                              AbstractReplicationStrategy strat,
                                                                              ReplicaCollection<?> fetchRanges,
                                                                              boolean useStrictConsistency,
                                                                              TokenMetadata tmdBefore,
                                                                              TokenMetadata tmdAfter,
                                                                              java.lang.String keyspace,
                                                                              java.util.Collection<RangeStreamer.SourceFilter> sourceFilters)

Get a map of all ranges and the source that will be cleaned up once this bootstrapped node is added for the given ranges. For each range, the list should only contain a single source. This allows us to consistently migrate data without violating consistency.

convertPreferredEndpointsToWorkMap
```
public static com.google.common.collect.Multimap<InetAddressAndPort,RangeStreamer.FetchReplica> convertPreferredEndpointsToWorkMap(EndpointsByReplica preferredEndpoints)
```
The preferred endpoint list is the wrong format because it is keyed by Replica (this node) rather than the source endpoint we will fetch from which streaming wants.

fetchAsync

public StreamResultFuture fetchAsync()

Class RangeStreamer