IBlacklistStrategy (Storm 2.7.1 API)

All Known Implementing Classes:

DefaultBlacklistStrategy, RasBlacklistStrategy
```
public interface IBlacklistStrategy
```

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Set<String>`	`getBlacklist(List<Map<String,Set<Integer>>> badSupervisorsToleranceSlidingWindow, List<Map<String,Integer>> sendAssignmentFailureCount, Cluster cluster, Topologies topologies)`	Get blacklist by blacklist strategy.
`void`	`prepare(Map<String,Object> conf)`
`void`	`resumeFromBlacklist()`	resume supervisors form blacklist.

- Method Detail
  - prepare
```
void prepare(Map<String,Object> conf)
```
  - getBlacklist
```
Set<String> getBlacklist(List<Map<String,Set<Integer>>> badSupervisorsToleranceSlidingWindow,
                         List<Map<String,Integer>> sendAssignmentFailureCount,
                         Cluster cluster,
                         Topologies topologies)
```
    Get blacklist by blacklist strategy.
    
    Parameters:
    
    badSupervisorsToleranceSlidingWindow - bad supervisors buffered in sliding window
    
    sendAssignmentFailureCount - supervisors with failed assignment calls in sliding window
    
    cluster - the cluster these topologies are running in. `cluster` contains everything user need to develop a new scheduling logic. e.g. supervisors information, available slots, current assignments for all the topologies etc. User can set the new assignment for topologies using cluster.setAssignmentById()`
    
    topologies - all the topologies in the cluster, some of them need schedule. Topologies object here only contain static information about topologies. Information like assignments, slots are all in the `cluster` object.
    
    Returns:
    
    blacklisted supervisors' id set
  - resumeFromBlacklist
```
void resumeFromBlacklist()
```
    resume supervisors form blacklist. Blacklist is just a temporary list for supervisors, or there will be less and less available resources. This will be called every time before getBlacklist() and schedule.