```
@Private
@Evolving
public interface TransactionBufferClient
```
The transaction buffer client to commit and abort transactions on topics or subscription. The transaction buffer client is used by transaction coordinator to end transactions.

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`java.util.concurrent.CompletableFuture<TxnID>`	`abortTxnOnSubscription(java.lang.String topic, java.lang.String subscription, long txnIdMostBits, long txnIdLeastBits, long lowWaterMark)`	Abort the transaction associated with the topic subscription.
`java.util.concurrent.CompletableFuture<TxnID>`	`abortTxnOnTopic(java.lang.String topic, long txnIdMostBits, long txnIdLeastBits, long lowWaterMark)`	Abort the transaction associated with the topic.
`void`	`close()`
`java.util.concurrent.CompletableFuture<TxnID>`	`commitTxnOnSubscription(java.lang.String topic, java.lang.String subscription, long txnIdMostBits, long txnIdLeastBits, long lowWaterMark)`	Commit the transaction associated with the topic subscription.
`java.util.concurrent.CompletableFuture<TxnID>`	`commitTxnOnTopic(java.lang.String topic, long txnIdMostBits, long txnIdLeastBits, long lowWaterMark)`	Commit the transaction associated with the topic.

方法详细资料

commitTxnOnTopic

java.util.concurrent.CompletableFuture<TxnID> commitTxnOnTopic(java.lang.String topic,
                                                               long txnIdMostBits,
                                                               long txnIdLeastBits,
                                                               long lowWaterMark)

Commit the transaction associated with the topic.

参数:: topic - topic name; txnIdMostBits - the most bits of txn id; txnIdLeastBits - the least bits of txn id; lowWaterMark - the low water mark of this txn;
返回:: the future represents the commit result

abortTxnOnTopic

java.util.concurrent.CompletableFuture<TxnID> abortTxnOnTopic(java.lang.String topic,
                                                              long txnIdMostBits,
                                                              long txnIdLeastBits,
                                                              long lowWaterMark)

Abort the transaction associated with the topic.

参数:: topic - topic name; txnIdMostBits - the most bits of txn id; txnIdLeastBits - the least bits of txn id; lowWaterMark - the low water mark of this txn
返回:: the future represents the abort result

commitTxnOnSubscription

java.util.concurrent.CompletableFuture<TxnID> commitTxnOnSubscription(java.lang.String topic,
                                                                      java.lang.String subscription,
                                                                      long txnIdMostBits,
                                                                      long txnIdLeastBits,
                                                                      long lowWaterMark)

Commit the transaction associated with the topic subscription.

参数:: topic - topic name; subscription - subscription name; txnIdMostBits - the most bits of txn id; txnIdLeastBits - the least bits of txn id; lowWaterMark - the low water mark of this txn
返回:: the future represents the commit result

abortTxnOnSubscription

java.util.concurrent.CompletableFuture<TxnID> abortTxnOnSubscription(java.lang.String topic,
                                                                     java.lang.String subscription,
                                                                     long txnIdMostBits,
                                                                     long txnIdLeastBits,
                                                                     long lowWaterMark)

Abort the transaction associated with the topic subscription.

参数:: topic - topic name; subscription - subscription name; txnIdMostBits - the most bits of txn id; txnIdLeastBits - the least bits of txn id; lowWaterMark - the low water mark of this txn
返回:: the future represents the abort result

close
```
void close()
```