Hakunata commented on issue #733:
URL:
https://github.com/apache/servicecomb-pack/issues/733#issuecomment-1049677349
> 你可以debug一下Alpha的代码， Alpha 调用Omega agent confirm 或者 cancel的代码在
org.apache.servicecomb.pack.alpha.server.tcc.callback.GrpcOmegaTccCallback 的
invoke 方法里面。 里面会比较Transaction的状态， 我估计可能是Transaction的状态出了问题。
发现问题了（A:转出服务；B:转入服务）：
因为父事物里面我catch了B服务的异常，没有在父事物的方法（@TccStart修饰的业务方法）里面再抛出，结果父事物的事物类型是Success
`@TccStart
public Result transfer(TransferEntity transferEntity){
String errMsg = "";
Integer errCode = 0;
try{
ResponseEntity<UserAccount> outResp =
alphaClient.getForEntity(getBankAlphaURL(transferEntity),UserAccount.class,transferEntity.getFromId(),transferEntity.getMoney()
);
System.out.println(outResp.getBody().toString());
ResponseEntity<UserAccount> inResp =
betaClient.getForEntity(getBankBetaURL(transferEntity),UserAccount.class,transferEntity.getToId(),transferEntity.getMoney()
);
System.out.println(inResp.getBody().toString());
errMsg = "user[id:"+transferEntity.getFromId()+"] transfer
meney("+transferEntity.getMoney()+") to user[id:"+transferEntity.getToId()+"]
success";
}catch (Exception e){
e.printStackTrace();
errMsg = e.getMessage();
errCode = -1;
// ***********************************************
// 这里要继续抛出去，或者确认子事物会throw失败异常，父事物就不应该try...catch
// ***********************************************
throw e;
}
return new Result(errCode,errMsg);
}`
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