org.apache.lens.server.query.collect

Interface WaitingQueriesSelector

All Known Implementing Classes:

UnioningWaitingQueriesSelector

public interface WaitingQueriesSelector

Selects a subset of waiting queries eligible to move out of waiting state.

Method Summary

Methods

Modifier and Type	Method and Description
Set<QueryContext>	selectQueries(FinishedLensQuery finishedQuery, EstimatedImmutableQueryCollection waitingQueries)

Method Detail

selectQueries

Set<QueryContext> selectQueries(FinishedLensQuery finishedQuery,
                              EstimatedImmutableQueryCollection waitingQueries)

Parameters:

finishedQuery -

waitingQueries -

Returns:

Set of waiting queries eligible to move out of waiting state. Empty set is returned when no query is eligible. null is never returned. Multiple iterations over the returned set are guaranteed to be in the same order.