org.apache.lens.driver.hive.priority

Class DurationBasedQueryPriorityDecider

java.lang.Object

org.apache.lens.driver.hive.priority.DurationBasedQueryPriorityDecider

All Implemented Interfaces:

QueryPriorityDecider

public class DurationBasedQueryPriorityDecider
extends Object
implements QueryPriorityDecider

Field Summary

Fields inherited from interface org.apache.lens.server.api.priority.QueryPriorityDecider

LOG

Constructor Summary

Constructors

Constructor and Description
DurationBasedQueryPriorityDecider(LensDriver driver, String ranges, float monthlyPartitoinWeight, float dailyPartitionWeight, float hourlyPartitionWeight) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
Priority	decidePriority(AbstractQueryContext abstractQueryContext) The Implementation

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DurationBasedQueryPriorityDecider

public DurationBasedQueryPriorityDecider(LensDriver driver,
                                 String ranges,
                                 float monthlyPartitoinWeight,
                                 float dailyPartitionWeight,
                                 float hourlyPartitionWeight)

Constructor. Takes three weights for partitions.

Parameters:

driver -

ranges -

monthlyPartitoinWeight -

dailyPartitionWeight -

hourlyPartitionWeight -

Method Detail

decidePriority

public Priority decidePriority(AbstractQueryContext abstractQueryContext)
                        throws LensException

The Implementation

Specified by:

decidePriority in interface QueryPriorityDecider

Parameters:

abstractQueryContext -

Returns:

decided Priority

Throws:

LensException - Exception occurs mostly when one of drivers/explained queries/plans is null