Package org.apache.iotdb.confignode.client.sync

Class SyncDataNodeClientPool

java.lang.Object

org.apache.iotdb.confignode.client.sync.SyncDataNodeClientPool

public class SyncDataNodeClientPool
extends Object

Synchronously send RPC requests to DataNodes. See queryengine.thrift for more details.

Field Summary

Fields

Modifier and Type	Field	Description
protected com.google.common.collect.ImmutableMap<CnToDnSyncRequestType,org.apache.ratis.util.function.CheckedBiFunction<Object,SyncDataNodeInternalServiceClient,Object,Exception>>	actionMap

Method Summary

Modifier and Type	Method	Description
TRegionLeaderChangeResp	changeRegionLeader(TConsensusGroupId regionId, TEndPoint dataNode, TDataNodeLocation newLeaderNode)	change a region leader from the datanode to other datanode, other datanode should be in same raft group.
static SyncDataNodeClientPool	getInstance()
Object	sendSyncRequestToDataNodeWithGivenRetry(TEndPoint endPoint, Object req, CnToDnSyncRequestType requestType, int retryNum)
Object	sendSyncRequestToDataNodeWithRetry(TEndPoint endPoint, Object req, CnToDnSyncRequestType requestType)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

actionMap

protected com.google.common.collect.ImmutableMap<CnToDnSyncRequestType,org.apache.ratis.util.function.CheckedBiFunction<Object,SyncDataNodeInternalServiceClient,Object,Exception>> actionMap

Method Details

sendSyncRequestToDataNodeWithRetry

public Object sendSyncRequestToDataNodeWithRetry(TEndPoint endPoint,
 Object req,
 CnToDnSyncRequestType requestType)

sendSyncRequestToDataNodeWithGivenRetry

public Object sendSyncRequestToDataNodeWithGivenRetry(TEndPoint endPoint,
 Object req,
 CnToDnSyncRequestType requestType,
 int retryNum)

changeRegionLeader

public TRegionLeaderChangeResp changeRegionLeader(TConsensusGroupId regionId,
 TEndPoint dataNode,
 TDataNodeLocation newLeaderNode)

change a region leader from the datanode to other datanode, other datanode should be in same raft group.

Parameters:

regionId - the region which will changer leader

dataNode - data node server, change regions leader from it

newLeaderNode - target data node, change regions leader to it

Returns:

the result of the change leader operation

getInstance

public static SyncDataNodeClientPool getInstance()