All Known Implementing Classes:

CoordinatorClientImpl
```
public interface CoordinatorClient
```

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`com.google.common.util.concurrent.ListenableFuture<List<DataSourceInformation>>`	`fetchDataSourceInformation(Set<String> datasources)`	Retrieves detailed metadata information for the specified data sources, which includes `RowSignature`.
`com.google.common.util.concurrent.ListenableFuture<org.apache.druid.timeline.DataSegment>`	`fetchSegment(String dataSource, String segmentId, boolean includeUnused)`	Fetches segment metadata for the given dataSource and segmentId.
`Iterable<ImmutableSegmentLoadInfo>`	`fetchServerViewSegments(String dataSource, List<org.joda.time.Interval> intervals)`	Fetches segments from the coordinator server view for the given dataSource and intervals.
`com.google.common.util.concurrent.ListenableFuture<List<org.apache.druid.timeline.DataSegment>>`	`fetchUsedSegments(String dataSource, List<org.joda.time.Interval> intervals)`	Fetches segment metadata for the given dataSource and intervals.
`com.google.common.util.concurrent.ListenableFuture<Boolean>`	`isHandoffComplete(String dataSource, org.apache.druid.query.SegmentDescriptor descriptor)`	Checks if the given segment is handed off or not.
`CoordinatorClient`	`withRetryPolicy(ServiceRetryPolicy retryPolicy)`	Returns a new instance backed by a ServiceClient which follows the provided retryPolicy

Method Detail

isHandoffComplete

com.google.common.util.concurrent.ListenableFuture<Boolean> isHandoffComplete(String dataSource,
                                                                              org.apache.druid.query.SegmentDescriptor descriptor)

Checks if the given segment is handed off or not.

fetchSegment

com.google.common.util.concurrent.ListenableFuture<org.apache.druid.timeline.DataSegment> fetchSegment(String dataSource,
                                                                                                       String segmentId,
                                                                                                       boolean includeUnused)

Fetches segment metadata for the given dataSource and segmentId. If includeUnused is set to false, the segment is not returned if it is marked as unused.

fetchServerViewSegments

Iterable<ImmutableSegmentLoadInfo> fetchServerViewSegments(String dataSource,
                                                           List<org.joda.time.Interval> intervals)

Fetches segments from the coordinator server view for the given dataSource and intervals.

fetchUsedSegments

com.google.common.util.concurrent.ListenableFuture<List<org.apache.druid.timeline.DataSegment>> fetchUsedSegments(String dataSource,
                                                                                                                  List<org.joda.time.Interval> intervals)

Fetches segment metadata for the given dataSource and intervals.

fetchDataSourceInformation

com.google.common.util.concurrent.ListenableFuture<List<DataSourceInformation>> fetchDataSourceInformation(Set<String> datasources)

Retrieves detailed metadata information for the specified data sources, which includes RowSignature.

withRetryPolicy
```
CoordinatorClient withRetryPolicy(ServiceRetryPolicy retryPolicy)
```
Returns a new instance backed by a ServiceClient which follows the provided retryPolicy

Interface CoordinatorClient