InternalTestCluster (framework 6.2.0 API)

java.lang.Object
- org.elasticsearch.test.TestCluster
- - org.elasticsearch.test.InternalTestCluster

```
public final class InternalTestCluster
extends TestCluster
```
InternalTestCluster manages a set of JVM private nodes and allows convenient access to them. The cluster supports randomized configuration such that nodes started in the cluster will automatically load asserting services tracking resources like file handles or open searchers.
The Cluster is bound to a test lifecycle where tests must call beforeTest(java.util.Random, double) and afterTest() to initialize and reset the cluster in order to be more reproducible. The term "more" relates to the async nature of Elasticsearch in combination with randomized testing. Once Threads and asynchronous calls are involved reproducibility is very limited. This class should only be used through ESIntegTestCase.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`InternalTestCluster.RestartCallback`	An abstract class that is called during `rollingRestart(InternalTestCluster.RestartCallback)` and / or `fullRestart(InternalTestCluster.RestartCallback)` to execute actions at certain stages of the restart.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`DEFAULT_HIGH_NUM_MASTER_NODES`
`static int`	`DEFAULT_LOW_NUM_MASTER_NODES`
`static InternalTestCluster.RestartCallback`	`EMPTY_CALLBACK`
`static java.lang.String`	`TRANSPORT_CLIENT_PREFIX`

Fields inherited from class org.elasticsearch.test.TestCluster
random, transportClientRatio

Constructor Summary

Constructors
Constructor	Description
InternalTestCluster(long clusterSeed, java.nio.file.Path baseDir, boolean randomlyAddDedicatedMasters, boolean autoManageMinMasterNodes, int minNumDataNodes, int maxNumDataNodes, java.lang.String clusterName, NodeConfigurationSource nodeConfigurationSource, int numClientNodes, boolean enableHttpPipelining, java.lang.String nodePrefix, java.util.Collection<java.lang.Class<? extends org.elasticsearch.plugins.Plugin>> mockPlugins, java.util.function.Function<org.elasticsearch.client.Client,org.elasticsearch.client.Client> clientWrapper)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`afterTest()`	This method should be executed during tear down, after each test (but after assertAfterTest)
`void`	`assertAfterTest()`	This method checks all the things that need to be checked after each test
`void`	`beforeIndexDeletion()`	Assertions that should run before the cluster is wiped should be called in this method
`void`	`beforeTest(java.util.Random random, double transportClientRatio)`	This method should be executed before each test to reset the cluster to its initial state.
`void`	`clearDisruptionScheme()`
`void`	`clearDisruptionScheme(boolean ensureHealthyCluster)`
`org.elasticsearch.client.Client`	`client()`	Returns a client connected to any node in the cluster
`org.elasticsearch.client.Client`	`client(java.lang.String nodeName)`	Returns a node client to a given node.
`org.elasticsearch.client.Client`	`client(java.util.function.Predicate<org.elasticsearch.common.settings.Settings> filterPredicate)`	Returns a random node that applies to the given predicate.
`void`	`close()`	Closes the current cluster
`void`	`closeNonSharedNodes(boolean wipeData)`
`static java.lang.String`	`clusterName(java.lang.String prefix, long clusterSeed)`
`org.elasticsearch.cluster.service.ClusterService`	`clusterService()`	Returns a reference to a random node's `ClusterService`
`org.elasticsearch.cluster.service.ClusterService`	`clusterService(java.lang.String node)`	Returns a reference to a node's `ClusterService`.
`org.elasticsearch.client.Client`	`coordOnlyNodeClient()`	Returns a client to a coordinating only node
`org.elasticsearch.client.Client`	`dataNodeClient()`	Returns a node client to a data node in the cluster.
`void`	`ensureAtLeastNumDataNodes(int n)`	Ensures that at least `n` data nodes are present in the cluster.
`void`	`ensureAtMostNumDataNodes(int n)`	Ensures that at most `n` are up and running.
`void`	`ensureEstimatedStats()`	Ensures that any breaker statistics are reset to 0.
`void`	`fullRestart()`	Restarts all nodes in the cluster.
`void`	`fullRestart(InternalTestCluster.RestartCallback callback)`	Restarts all nodes in the cluster.
`boolean`	`getAutoManageMinMasterNode()`	returns true if the `ElectMasterService.DISCOVERY_ZEN_MINIMUM_MASTER_NODES_SETTING` setting is auto managed by this cluster
`java.lang.Iterable<org.elasticsearch.client.Client>`	`getClients()`	Returns an `Iterable` over all clients in this test cluster
`java.lang.String`	`getClusterName()`	Returns the cluster name
`<T> T`	`getDataNodeInstance(java.lang.Class<T> clazz)`
`<T> java.lang.Iterable<T>`	`getDataNodeInstances(java.lang.Class<T> clazz)`	Returns an Iterable to all instances for the given class >T< across all data nodes in the cluster.
`<T> java.lang.Iterable<T>`	`getDataOrMasterNodeInstances(java.lang.Class<T> clazz)`	Returns an Iterable to all instances for the given class >T< across all data and master nodes in the cluster.
`org.elasticsearch.common.settings.Settings`	`getDefaultSettings()`
`<T> T`	`getInstance(java.lang.Class<T> clazz)`	Returns a reference to a random nodes instances of the given class >T<
`<T> T`	`getInstance(java.lang.Class<T> clazz, java.lang.String node)`	Returns a reference to the given nodes instances of the given class >T<
`<T> java.lang.Iterable<T>`	`getInstances(java.lang.Class<T> clazz)`	Returns an Iterable to all instances for the given class >T< across all nodes in the cluster.
`java.lang.String`	`getMasterName()`	Returns the name of the current master node in the cluster.
`java.lang.String`	`getMasterName(java.lang.String viaNode)`	Returns the name of the current master node in the cluster and executes the request via the node specified in the viaNode parameter.
`org.elasticsearch.common.io.stream.NamedWriteableRegistry`	`getNamedWriteableRegistry()`	Returns this clusters `NamedWriteableRegistry` this is needed to deserialize binary content from this cluster that might include custom named writeables
`java.lang.String[]`	`getNodeNames()`
`java.util.Collection<java.lang.Class<? extends org.elasticsearch.plugins.Plugin>>`	`getPlugins()`
`java.net.InetSocketAddress[]`	`httpAddresses()`	Returns the http addresses of the nodes within the cluster.
`org.elasticsearch.client.Client`	`masterClient()`	Returns a node client to the current master node.
`static java.util.function.Predicate<org.elasticsearch.common.settings.Settings>`	`nameFilter(java.lang.String... nodeName)`	Returns a predicate that only accepts settings of nodes with one of the given names.
`java.lang.String`	`nodePrefix()`	Returns the common node name prefix for this test cluster.
`java.util.Set<java.lang.String>`	`nodesInclude(java.lang.String index)`	Returns a set of nodes that have at least one shard of the given index.
`org.elasticsearch.client.Client`	`nonMasterClient()`	Returns a node client to random node but not the master.
`int`	`numDataAndMasterNodes()`	Returns the number of data and master eligible nodes in the cluster.
`int`	`numDataNodes()`	Returns the number of data nodes in the cluster.
`int`	`numMasterNodes()`
`void`	`restartNode(java.lang.String nodeName, InternalTestCluster.RestartCallback callback)`	Restarts a node and calls the callback during restart.
`void`	`restartRandomDataNode()`	Restarts a random data node in the cluster
`void`	`restartRandomDataNode(InternalTestCluster.RestartCallback callback)`	Restarts a random data node in the cluster and calls the callback during restart.
`void`	`restartRandomNode()`	Restarts a random node in the cluster
`void`	`restartRandomNode(InternalTestCluster.RestartCallback callback)`	Restarts a random node in the cluster and calls the callback during restart.
`void`	`rollingRestart()`	Restarts all nodes in a rolling restart fashion ie.
`void`	`rollingRestart(InternalTestCluster.RestartCallback callback)`	Restarts all nodes in a rolling restart fashion ie.
`void`	`setDisruptionScheme(ServiceDisruptionScheme scheme)`
`int`	`size()`	Returns the number of nodes in the cluster.
`org.elasticsearch.client.Client`	`smartClient()`	Returns a "smart" node client to a random node in the cluster
`java.lang.String`	`startCoordinatingOnlyNode(org.elasticsearch.common.settings.Settings settings)`
`java.lang.String`	`startDataOnlyNode()`
`java.lang.String`	`startDataOnlyNode(org.elasticsearch.common.settings.Settings settings)`
`java.util.List<java.lang.String>`	`startDataOnlyNodes(int numNodes)`
`java.util.List<java.lang.String>`	`startDataOnlyNodes(int numNodes, org.elasticsearch.common.settings.Settings settings)`
`java.lang.String`	`startMasterOnlyNode()`
`java.lang.String`	`startMasterOnlyNode(org.elasticsearch.common.settings.Settings settings)`
`java.util.List<java.lang.String>`	`startMasterOnlyNodes(int numNodes)`
`java.util.List<java.lang.String>`	`startMasterOnlyNodes(int numNodes, org.elasticsearch.common.settings.Settings settings)`
`java.lang.String`	`startNode()`	Starts a node with default settings and returns it's name.
`java.lang.String`	`startNode(org.elasticsearch.common.settings.Settings settings)`	Starts a node with the given settings and returns it's name.
`java.lang.String`	`startNode(org.elasticsearch.common.settings.Settings.Builder settings)`	Starts a node with the given settings builder and returns it's name.
`java.util.List<java.lang.String>`	`startNodes(int numOfNodes)`	Starts multiple nodes with default settings and returns their names
`java.util.List<java.lang.String>`	`startNodes(int numOfNodes, org.elasticsearch.common.settings.Settings settings)`	Starts multiple nodes with the given settings and returns their names
`java.util.List<java.lang.String>`	`startNodes(org.elasticsearch.common.settings.Settings... settings)`	Starts multiple nodes with the given settings and returns their names
`void`	`stopCurrentMasterNode()`	Stops the current master node forcefully
`boolean`	`stopRandomDataNode()`	Stops a random data node in the cluster.
`void`	`stopRandomNode(java.util.function.Predicate<org.elasticsearch.common.settings.Settings> filter)`	Stops a random node in the cluster that applies to the given filter or non if the non of the nodes applies to the filter.
`void`	`stopRandomNonMasterNode()`	Stops any of the current nodes but not the master node.
`org.elasticsearch.client.Client`	`transportClient()`	Returns a transport client
`void`	`validateClusterFormed()`	ensure a cluster is formed with all published nodes.
`void`	`validateClusterFormed(java.lang.String viaNode)`	ensure a cluster is formed with all published nodes, but do so by using the client of the specified node

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

Methods inherited from class org.elasticsearch.test.TestCluster
seed, wipe, wipeAllTemplates, wipeIndices, wipeRepositories, wipeTemplates

- Field Detail
  - DEFAULT_LOW_NUM_MASTER_NODES
```
public static final int DEFAULT_LOW_NUM_MASTER_NODES
```
    See Also:
    
    Constant Field Values
  - DEFAULT_HIGH_NUM_MASTER_NODES
```
public static final int DEFAULT_HIGH_NUM_MASTER_NODES
```
    See Also:
    
    Constant Field Values
  - TRANSPORT_CLIENT_PREFIX
```
public static final java.lang.String TRANSPORT_CLIENT_PREFIX
```
    See Also:
    
    Constant Field Values
  - EMPTY_CALLBACK
```
public static final InternalTestCluster.RestartCallback EMPTY_CALLBACK
```
- Constructor Detail
  - InternalTestCluster
```
public InternalTestCluster(long clusterSeed,
                           java.nio.file.Path baseDir,
                           boolean randomlyAddDedicatedMasters,
                           boolean autoManageMinMasterNodes,
                           int minNumDataNodes,
                           int maxNumDataNodes,
                           java.lang.String clusterName,
                           NodeConfigurationSource nodeConfigurationSource,
                           int numClientNodes,
                           boolean enableHttpPipelining,
                           java.lang.String nodePrefix,
                           java.util.Collection<java.lang.Class<? extends org.elasticsearch.plugins.Plugin>> mockPlugins,
                           java.util.function.Function<org.elasticsearch.client.Client,org.elasticsearch.client.Client> clientWrapper)
```
- Method Detail
  - getClusterName
```
public java.lang.String getClusterName()
```
    Description copied from class: TestCluster
    
    Returns the cluster name
    
    Specified by:
    
    getClusterName in class TestCluster
  - getAutoManageMinMasterNode
```
public boolean getAutoManageMinMasterNode()
```
    returns true if the ElectMasterService.DISCOVERY_ZEN_MINIMUM_MASTER_NODES_SETTING setting is auto managed by this cluster
  - getNodeNames
```
public java.lang.String[] getNodeNames()
```
  - getPlugins
```
public java.util.Collection<java.lang.Class<? extends org.elasticsearch.plugins.Plugin>> getPlugins()
```
  - clusterName
```
public static java.lang.String clusterName(java.lang.String prefix,
                                           long clusterSeed)
```
  - ensureAtLeastNumDataNodes
```
public void ensureAtLeastNumDataNodes(int n)
```
    Ensures that at least n data nodes are present in the cluster. if more nodes than n are present this method will not stop any of the running nodes.
  - ensureAtMostNumDataNodes
```
public void ensureAtMostNumDataNodes(int n)
                              throws java.io.IOException
```
    Ensures that at most n are up and running. If less nodes that n are running this method will not start any additional nodes.
    
    Throws:
    
    java.io.IOException
  - nodePrefix
```
public java.lang.String nodePrefix()
```
    Returns the common node name prefix for this test cluster.
  - client
```
public org.elasticsearch.client.Client client()
```
    Description copied from class: TestCluster
    
    Returns a client connected to any node in the cluster
    
    Specified by:
    
    client in class TestCluster
  - dataNodeClient
```
public org.elasticsearch.client.Client dataNodeClient()
```
    Returns a node client to a data node in the cluster. Note: use this with care tests should not rely on a certain nodes client.
  - masterClient
```
public org.elasticsearch.client.Client masterClient()
```
    Returns a node client to the current master node. Note: use this with care tests should not rely on a certain nodes client.
  - nonMasterClient
```
public org.elasticsearch.client.Client nonMasterClient()
```
    Returns a node client to random node but not the master. This method will fail if no non-master client is available.
  - coordOnlyNodeClient
```
public org.elasticsearch.client.Client coordOnlyNodeClient()
```
    Returns a client to a coordinating only node
  - startCoordinatingOnlyNode
```
public java.lang.String startCoordinatingOnlyNode(org.elasticsearch.common.settings.Settings settings)
```
  - transportClient
```
public org.elasticsearch.client.Client transportClient()
```
    Returns a transport client
  - client
```
public org.elasticsearch.client.Client client(java.lang.String nodeName)
```
    Returns a node client to a given node.
  - smartClient
```
public org.elasticsearch.client.Client smartClient()
```
    Returns a "smart" node client to a random node in the cluster
  - client
```
public org.elasticsearch.client.Client client(java.util.function.Predicate<org.elasticsearch.common.settings.Settings> filterPredicate)
```
    Returns a random node that applies to the given predicate. The predicate can filter nodes based on the nodes settings. If all nodes are filtered out this method will return null
  - close
```
public void close()
```
    Description copied from class: TestCluster
    
    Closes the current cluster
    
    Specified by:
    
    close in class TestCluster
  - beforeTest
```
public void beforeTest(java.util.Random random,
                       double transportClientRatio)
                throws java.io.IOException,
                       java.lang.InterruptedException
```
    Description copied from class: TestCluster
    
    This method should be executed before each test to reset the cluster to its initial state.
    
    Overrides:
    
    beforeTest in class TestCluster
    
    Throws:
    
    java.io.IOException
    
    java.lang.InterruptedException
  - validateClusterFormed
```
public void validateClusterFormed()
```
    ensure a cluster is formed with all published nodes.
  - validateClusterFormed
```
public void validateClusterFormed(java.lang.String viaNode)
```
    ensure a cluster is formed with all published nodes, but do so by using the client of the specified node
  - afterTest
```
public void afterTest()
               throws java.io.IOException
```
    Description copied from class: TestCluster
    
    This method should be executed during tear down, after each test (but after assertAfterTest)
    
    Specified by:
    
    afterTest in class TestCluster
    
    Throws:
    
    java.io.IOException
  - beforeIndexDeletion
```
public void beforeIndexDeletion()
                         throws java.lang.Exception
```
    Description copied from class: TestCluster
    
    Assertions that should run before the cluster is wiped should be called in this method
    
    Overrides:
    
    beforeIndexDeletion in class TestCluster
    
    Throws:
    
    java.lang.Exception
  - clusterService
```
public org.elasticsearch.cluster.service.ClusterService clusterService()
```
    Returns a reference to a random node's ClusterService
  - clusterService
```
public org.elasticsearch.cluster.service.ClusterService clusterService(@Nullable
                                                                       java.lang.String node)
```
    Returns a reference to a node's ClusterService. If the given node is null, a random node will be selected.
  - getInstances
```
public <T> java.lang.Iterable<T> getInstances(java.lang.Class<T> clazz)
```
    Returns an Iterable to all instances for the given class >T< across all nodes in the cluster.
  - getDataNodeInstances
```
public <T> java.lang.Iterable<T> getDataNodeInstances(java.lang.Class<T> clazz)
```
    Returns an Iterable to all instances for the given class >T< across all data nodes in the cluster.
  - getDataOrMasterNodeInstances
```
public <T> java.lang.Iterable<T> getDataOrMasterNodeInstances(java.lang.Class<T> clazz)
```
    Returns an Iterable to all instances for the given class >T< across all data and master nodes in the cluster.
  - getInstance
```
public <T> T getInstance(java.lang.Class<T> clazz,
                         java.lang.String node)
```
    Returns a reference to the given nodes instances of the given class >T<
  - getDataNodeInstance
```
public <T> T getDataNodeInstance(java.lang.Class<T> clazz)
```
  - getInstance
```
public <T> T getInstance(java.lang.Class<T> clazz)
```
    Returns a reference to a random nodes instances of the given class >T<
  - size
```
public int size()
```
    Description copied from class: TestCluster
    
    Returns the number of nodes in the cluster.
    
    Specified by:
    
    size in class TestCluster
  - httpAddresses
```
public java.net.InetSocketAddress[] httpAddresses()
```
    Description copied from class: TestCluster
    
    Returns the http addresses of the nodes within the cluster. Can be used to run REST tests against the test cluster.
    
    Specified by:
    
    httpAddresses in class TestCluster
  - stopRandomDataNode
```
public boolean stopRandomDataNode()
                           throws java.io.IOException
```
    Stops a random data node in the cluster. Returns true if a node was found to stop, false otherwise.
    
    Throws:
    
    java.io.IOException
  - stopRandomNode
```
public void stopRandomNode(java.util.function.Predicate<org.elasticsearch.common.settings.Settings> filter)
                    throws java.io.IOException
```
    Stops a random node in the cluster that applies to the given filter or non if the non of the nodes applies to the filter.
    
    Throws:
    
    java.io.IOException
  - stopCurrentMasterNode
```
public void stopCurrentMasterNode()
                           throws java.io.IOException
```
    Stops the current master node forcefully
    
    Throws:
    
    java.io.IOException
  - stopRandomNonMasterNode
```
public void stopRandomNonMasterNode()
                             throws java.io.IOException
```
    Stops any of the current nodes but not the master node.
    
    Throws:
    
    java.io.IOException
  - restartRandomNode
```
public void restartRandomNode()
                       throws java.lang.Exception
```
    Restarts a random node in the cluster
    
    Throws:
    
    java.lang.Exception
  - restartRandomNode
```
public void restartRandomNode(InternalTestCluster.RestartCallback callback)
                       throws java.lang.Exception
```
    Restarts a random node in the cluster and calls the callback during restart.
    
    Throws:
    
    java.lang.Exception
  - restartRandomDataNode
```
public void restartRandomDataNode()
                           throws java.lang.Exception
```
    Restarts a random data node in the cluster
    
    Throws:
    
    java.lang.Exception
  - restartRandomDataNode
```
public void restartRandomDataNode(InternalTestCluster.RestartCallback callback)
                           throws java.lang.Exception
```
    Restarts a random data node in the cluster and calls the callback during restart.
    
    Throws:
    
    java.lang.Exception
  - restartNode
```
public void restartNode(java.lang.String nodeName,
                        InternalTestCluster.RestartCallback callback)
                 throws java.lang.Exception
```
    Restarts a node and calls the callback during restart.
    
    Throws:
    
    java.lang.Exception
  - fullRestart
```
public void fullRestart()
                 throws java.lang.Exception
```
    Restarts all nodes in the cluster. It first stops all nodes and then restarts all the nodes again.
    
    Throws:
    
    java.lang.Exception
  - rollingRestart
```
public void rollingRestart()
                    throws java.lang.Exception
```
    Restarts all nodes in a rolling restart fashion ie. only restarts on node a time.
    
    Throws:
    
    java.lang.Exception
  - rollingRestart
```
public void rollingRestart(InternalTestCluster.RestartCallback callback)
                    throws java.lang.Exception
```
    Restarts all nodes in a rolling restart fashion ie. only restarts on node a time.
    
    Throws:
    
    java.lang.Exception
  - fullRestart
```
public void fullRestart(InternalTestCluster.RestartCallback callback)
                 throws java.lang.Exception
```
    Restarts all nodes in the cluster. It first stops all nodes and then restarts all the nodes again.
    
    Throws:
    
    java.lang.Exception
  - getMasterName
```
public java.lang.String getMasterName()
```
    Returns the name of the current master node in the cluster.
  - getMasterName
```
public java.lang.String getMasterName(@Nullable
                                      java.lang.String viaNode)
```
    Returns the name of the current master node in the cluster and executes the request via the node specified in the viaNode parameter. If viaNode isn't specified a random node will be picked to the send the request to.
  - nodesInclude
```
public java.util.Set<java.lang.String> nodesInclude(java.lang.String index)
```
    Returns a set of nodes that have at least one shard of the given index.
  - startNode
```
public java.lang.String startNode()
```
    Starts a node with default settings and returns it's name.
  - startNode
```
public java.lang.String startNode(org.elasticsearch.common.settings.Settings.Builder settings)
```
    Starts a node with the given settings builder and returns it's name.
  - startNode
```
public java.lang.String startNode(org.elasticsearch.common.settings.Settings settings)
```
    Starts a node with the given settings and returns it's name.
  - startNodes
```
public java.util.List<java.lang.String> startNodes(int numOfNodes)
```
    Starts multiple nodes with default settings and returns their names
  - startNodes
```
public java.util.List<java.lang.String> startNodes(int numOfNodes,
                                                   org.elasticsearch.common.settings.Settings settings)
```
    Starts multiple nodes with the given settings and returns their names
  - startNodes
```
public java.util.List<java.lang.String> startNodes(org.elasticsearch.common.settings.Settings... settings)
```
    Starts multiple nodes with the given settings and returns their names
  - startMasterOnlyNodes
```
public java.util.List<java.lang.String> startMasterOnlyNodes(int numNodes)
```
  - startMasterOnlyNodes
```
public java.util.List<java.lang.String> startMasterOnlyNodes(int numNodes,
                                                             org.elasticsearch.common.settings.Settings settings)
```
  - startDataOnlyNodes
```
public java.util.List<java.lang.String> startDataOnlyNodes(int numNodes)
```
  - startDataOnlyNodes
```
public java.util.List<java.lang.String> startDataOnlyNodes(int numNodes,
                                                           org.elasticsearch.common.settings.Settings settings)
```
  - startMasterOnlyNode
```
public java.lang.String startMasterOnlyNode()
```
  - startMasterOnlyNode
```
public java.lang.String startMasterOnlyNode(org.elasticsearch.common.settings.Settings settings)
```
  - startDataOnlyNode
```
public java.lang.String startDataOnlyNode()
```
  - startDataOnlyNode
```
public java.lang.String startDataOnlyNode(org.elasticsearch.common.settings.Settings settings)
```
  - closeNonSharedNodes
```
public void closeNonSharedNodes(boolean wipeData)
                         throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - numDataNodes
```
public int numDataNodes()
```
    Description copied from class: TestCluster
    
    Returns the number of data nodes in the cluster.
    
    Specified by:
    
    numDataNodes in class TestCluster
  - numDataAndMasterNodes
```
public int numDataAndMasterNodes()
```
    Description copied from class: TestCluster
    
    Returns the number of data and master eligible nodes in the cluster.
    
    Specified by:
    
    numDataAndMasterNodes in class TestCluster
  - numMasterNodes
```
public int numMasterNodes()
```
  - setDisruptionScheme
```
public void setDisruptionScheme(ServiceDisruptionScheme scheme)
```
  - clearDisruptionScheme
```
public void clearDisruptionScheme()
```
  - clearDisruptionScheme
```
public void clearDisruptionScheme(boolean ensureHealthyCluster)
```
  - getClients
```
public java.lang.Iterable<org.elasticsearch.client.Client> getClients()
```
    Description copied from class: TestCluster
    
    Returns an Iterable over all clients in this test cluster
    
    Specified by:
    
    getClients in class TestCluster
  - getNamedWriteableRegistry
```
public org.elasticsearch.common.io.stream.NamedWriteableRegistry getNamedWriteableRegistry()
```
    Description copied from class: TestCluster
    
    Returns this clusters NamedWriteableRegistry this is needed to deserialize binary content from this cluster that might include custom named writeables
    
    Specified by:
    
    getNamedWriteableRegistry in class TestCluster
  - nameFilter
```
public static java.util.function.Predicate<org.elasticsearch.common.settings.Settings> nameFilter(java.lang.String... nodeName)
```
    Returns a predicate that only accepts settings of nodes with one of the given names.
  - getDefaultSettings
```
public org.elasticsearch.common.settings.Settings getDefaultSettings()
```
  - ensureEstimatedStats
```
public void ensureEstimatedStats()
```
    Description copied from class: TestCluster
    
    Ensures that any breaker statistics are reset to 0. The implementation is specific to the test cluster, because the act of checking some breaker stats can increase them.
    
    Specified by:
    
    ensureEstimatedStats in class TestCluster
  - assertAfterTest
```
public void assertAfterTest()
                     throws java.io.IOException
```
    Description copied from class: TestCluster
    
    This method checks all the things that need to be checked after each test
    
    Overrides:
    
    assertAfterTest in class TestCluster
    
    Throws:
    
    java.io.IOException

Class InternalTestCluster

Nested Class Summary

Field Summary

Fields inherited from class org.elasticsearch.test.TestCluster

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from class org.elasticsearch.test.TestCluster

Field Detail

DEFAULT_LOW_NUM_MASTER_NODES

DEFAULT_HIGH_NUM_MASTER_NODES

TRANSPORT_CLIENT_PREFIX

EMPTY_CALLBACK

Constructor Detail

InternalTestCluster

Method Detail

getClusterName

getAutoManageMinMasterNode

getNodeNames

getPlugins

clusterName

ensureAtLeastNumDataNodes

ensureAtMostNumDataNodes

nodePrefix

client

dataNodeClient

masterClient

nonMasterClient

coordOnlyNodeClient

startCoordinatingOnlyNode

transportClient

client

smartClient

client

close

beforeTest

validateClusterFormed

validateClusterFormed

afterTest

beforeIndexDeletion

clusterService

clusterService

getInstances

getDataNodeInstances

getDataOrMasterNodeInstances

getInstance

getDataNodeInstance

getInstance

size

httpAddresses

stopRandomDataNode

stopRandomNode

stopCurrentMasterNode

stopRandomNonMasterNode

restartRandomNode

restartRandomNode

restartRandomDataNode

restartRandomDataNode

restartNode

fullRestart

rollingRestart

rollingRestart

fullRestart

getMasterName

getMasterName

nodesInclude

startNode

startNode

startNode

startNodes

startNodes

startNodes

startMasterOnlyNodes

startMasterOnlyNodes

startDataOnlyNodes

startDataOnlyNodes

startMasterOnlyNode

startMasterOnlyNode

startDataOnlyNode

startDataOnlyNode