KillStalePendingSegments (druid-server 29.0.1 API)

java.lang.Object
- org.apache.druid.server.coordinator.duty.KillStalePendingSegments

All Implemented Interfaces:

CoordinatorDuty
```
public class KillStalePendingSegments
extends Object
implements CoordinatorDuty
```
Duty to kill stale pending segments which are not needed anymore. Pending segments are created when appending realtime or batch tasks allocate segments to build incremental indexes. Under normal operation, these pending segments get committed when the task completes and become regular segments. But in case of task failures, some pending segments might be left around and cause clutter in the metadata store.
While cleaning up, this duty ensures that the following pending segments are retained for at least DURATION_TO_RETAIN:
- Pending segments created by any active task (across all datasources)
- Pending segments created by the latest completed task (across all datasources)

Constructor Summary

Constructors
Constructor Description

KillStalePendingSegments(OverlordClient overlordClient)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`DruidCoordinatorRuntimeParams`	`run(DruidCoordinatorRuntimeParams params)`	Implementations of this method run various activities performed by the coordinator.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - KillStalePendingSegments
```
public KillStalePendingSegments(OverlordClient overlordClient)
```
- Method Detail
  - run
```
public DruidCoordinatorRuntimeParams run(DruidCoordinatorRuntimeParams params)
```
    Description copied from interface: CoordinatorDuty
    
    Implementations of this method run various activities performed by the coordinator. Input params can be used and modified. The returned DruidCoordinatorRuntimeParams is passed to the next duty.
    
    Specified by:
    
    run in interface CoordinatorDuty
    
    Returns:
    
    same as input or a modified value to be used by next duty. Null return values will prevent subsequent CoordinatorDuty objects (see the order in the lists passed into the constructor of DruidCoordinator.DutiesRunnable) from running until the next cycle.