public class PartitionPlanImpl extends java.lang.Object implements PartitionPlan
| Constructor and Description |
|---|
PartitionPlanImpl() |
| Modifier and Type | Method and Description |
|---|---|
java.util.Properties[] |
getPartitionProperties()
Gets array of Partition Properties objects for Partitions.
|
int |
getPartitions()
Gets count of Partitions.
|
boolean |
getPartitionsOverride()
Return current value of partition override setting.
|
int |
getThreads()
Gets maximum number of threads requested to use to run
partitions for this step.
|
void |
setPartitionProperties(java.util.Properties[] props)
Sets array of substitution Properties objects for the set of Partitions.
|
void |
setPartitions(int count)
Set number of partitions.
|
void |
setPartitionsOverride(boolean override)
Specify whether or not to override the partition
count from the previous job execution.
|
void |
setThreads(int count)
Set maximum number of threads requested to use to run
partitions for this step.
|
public void setPartitions(int count)
PartitionPlansetPartitions in interface PartitionPlancount - specifies the partition countpublic void setThreads(int count)
PartitionPlansetThreads in interface PartitionPlancount - specifies the requested thread countpublic void setPartitionsOverride(boolean override)
PartitionPlan
When false is specified, the
partition count from the previous job execution is used
and any new value set for partition count in the current run
is ignored. In addition, partition results from the previous
job execution are remembered, and only incomplete partitions
are reprocessed.
When true is specified, the partition count from the current run
is used and all results from past partitions are discarded. Any
resource cleanup or back out of work done in the previous run is the
responsibility of the application. The PartitionReducer artifact's
rollbackPartitionedStep method is invoked during restart before any
partitions begin processing to provide a cleanup hook.
setPartitionsOverride in interface PartitionPlanoverride - See method descriptionpublic boolean getPartitionsOverride()
PartitionPlangetPartitionsOverride in interface PartitionPlanPartitionPlan.setPartitionsOverride(boolean)public void setPartitionProperties(java.util.Properties[] props)
PartitionPlansetPartitionProperties in interface PartitionPlanprops - specifies the Properties object arrayPartitionPlan.getPartitionProperties()public int getPartitions()
PartitionPlangetPartitions in interface PartitionPlanpublic int getThreads()
PartitionPlangetThreads in interface PartitionPlanpublic java.util.Properties[] getPartitionProperties()
PartitionPlanThese can be used in Job XML substitution using substitution expressions with the syntax: #{partitionPlan['propertyName']}
Each element of the Properties array returned can be used to resolving substitutions for a single partition. In the typical use case, each Properties element will have a similar set of property names, with a substitution potentially resolving to the corresponding value for each partition.
getPartitionProperties in interface PartitionPlan