```
public class ZkContainer
extends Object
```
Used by CoreContainer to hold ZooKeeper / SolrCloud info, especially ZkController. Mainly it does some ZK initialization, and ensures a loading core registers in ZK. Even when in standalone mode, perhaps surprisingly, an instance of this class exists. If getZkController() returns null then we're in standalone mode.

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`
`ExecutorService`	`getCoreZkRegisterExecutorService()`
`ZkController`	`getZkController()`
`SolrMetricProducer`	`getZkMetricsProducer()`
`void`	`initZooKeeper(CoreContainer cc, CloudConfig config)`
`void`	`registerInZk(SolrCore core, boolean background, boolean skipRecovery)`

public static volatile Predicate<CoreDescriptor> testing_beforeRegisterInZk

public void initZooKeeper(CoreContainer cc,
                          CloudConfig config)

public void registerInZk(SolrCore core,
                         boolean background,
                         boolean skipRecovery)

public ExecutorService getCoreZkRegisterExecutorService()

public SolrMetricProducer getZkMetricsProducer()

Modifier and Type	Field	Description
`static Predicate<CoreDescriptor>`	`testing_beforeRegisterInZk`
`protected ZkController`	`zkController`

Class ZkContainer