org.apache.lens.server.api.query.collect

Interface WaitingQueriesSelectionPolicy

All Known Implementing Classes:

DriverSpecificWaitingQueriesSelectionPolicy, UserSpecificWaitingQueriesSelectionPolicy

public interface WaitingQueriesSelectionPolicy

Method Summary

Modifier and Type	Method and Description
Set<QueryContext>	selectQueries(FinishedLensQuery finishedQuery, EstimatedImmutableQueryCollection waitingQueries) Selects a subset of waiting queries eligible to move out of waiting state, based on logic of this selection policy.

Method Detail

selectQueries

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

Selects a subset of waiting queries eligible to move out of waiting state, based on logic of this selection policy.

Parameters:

finishedQuery -

waitingQueries -

Returns:

Waiting queries eligible to move out of waiting state. If no queries are eligible, then an empty set is returned. null is never returned.