io.seata.core.exception.RmTransactionException: Response[ TransactionException[Fail to store branch

记录Seata 采用File存储模式下的大数据量提交事务失败解决方法

报错信息：

Could not commit JDBC transaction; nested exception is java.sql.SQLException: 
io.seata.core.exception.RmTransactionException:
 Response[ TransactionException[Fail to store branch session] ]
	at com.zajl.system.supplychain.dubbo.inStock.InStockDubboServiceImpl.sendAndInsert(InStockDubboServiceImpl.java:169)
	at org.apache.dubbo.common.bytecode.Wrapper32.invokeMethod(Wrapper32.java)
	at org.apache.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:47)
	at org.apache.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:84)
	at org.apache.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:56)
	at org.apache.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:56)
	at io.seata.integration.dubbo.TransactionPropagationFilter.invoke(TransactionPropagationFilter.java:65)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:82)
	at org.apache.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:55)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:82)
	at org.apache.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:92)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:82)
	at org.apache.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:48)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:82)
	at org.apache.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:81)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:82)
	at org.apache.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:96)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:82)
	at org.apache.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:148)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:82)
	at org.apache.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:82)
	at org.apache.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:41)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:82)
	at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$CallbackRegistrationInvoker.invoke(ProtocolFilterWrapper.java:157)
	at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:152)
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:102)
	at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:193)
	at org.apache.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:51)
	at org.apache.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:57)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

原因分析：

由于seata服务端store采用file模式，事务受数据量限制

解决方案：

第一步：

关闭seata服务，并修改服务端的store file的参数，打开服务端file.conf配置文件

store 默认配置如下：

## transaction log store
store {
  ## store mode: file、db
  mode = "file"

  ## file store
  file {
    dir = "file_store/data"

    # branch session size , if exceeded first try compress lockkey, still exceeded throws exceptions
    max-branch-session-size = 16384
    # globe session size , if exceeded throws exceptions
    max-global-session-size = 512
    # file buffer size , if exceeded allocate new buffer
    file-write-buffer-cache-size = 16384
    # when recover batch read size
    session.reload.read_size = 100
  }

}

修改其中配置如下：

## file store
  file {
    dir = "file_store/data"

    # branch session size , if exceeded first try compress lockkey, still exceeded throws exceptions
    max-branch-session-size = 32768
    # globe session size , if exceeded throws exceptions
    max-global-session-size = 1024
    # file buffer size , if exceeded allocate new buffer
    file-write-buffer-cache-size = 32768
    # when recover batch read size
    session.reload.read_size = 100
  }

默认配置中：

max-branch-session-size = 16384  （即2的14次方）

max-global-session-size = 512

file-write-buffer-cache-size = 16384

修改为扩大一倍：

max-branch-session-size = 32768

max-global-session-size = 1024

file-write-buffer-cache-size = 32768

具体根据数量可适当增加

第二步：

清空undo_log表记录，否会出现记录被锁的现象

第三步：

重启seata服务