org.janusgraph.core.schema

Interface JanusGraphManagement.IndexJobFuture

All Superinterfaces:

Future<ScanMetrics>

Enclosing interface:

JanusGraphManagement

public static interface JanusGraphManagement.IndexJobFuture
extends Future<ScanMetrics>

Method Summary

Modifier and Type	Method and Description
ScanMetrics	getIntermediateResult() Returns a set of potentially incomplete and still-changing metrics for this job.

Methods inherited from interface java.util.concurrent.Future

cancel, get, get, isCancelled, isDone

Method Detail

getIntermediateResult

ScanMetrics getIntermediateResult()
                           throws ExecutionException

Returns a set of potentially incomplete and still-changing metrics for this job. This is not guaranteed to be the same object as the one returned by Future.get(), nor will the metrics visible through the object returned by this method necessarily eventually converge on the same values in the object returned by Future.get(), though the implementation should attempt to provide both properties when practical.

The metrics visible through the object returned by this method may also change their values between reads. In other words, this is not necessarily an immutable snapshot.

If the index job has failed and the implementation is capable of quickly detecting that, then the implementation should throw an ExecutionException. Returning metrics in case of failure is acceptable, but throwing an exception is preferred.

Returns:

metrics for a potentially still-running job

Throws:

ExecutionException - if the index job threw an exception