我有一个talend作业，在一个snowflake数据库上运行两个并行的数据流。针对表a的update语句导致表b的更新失败，错误如下：
正在提交事务“uuid of transaction”，id“a-very-long-integer-id”，sql执行已取消。

Call END_OPERATION(999,'String1','String2','String3','String4','Success','0')

UPDATE TableB SET BATCH_KEY =  1234, LOAD_DT = current_timestamp::timestamp_ntz, KEY_HASH = MD5(TO_VARCHAR(ARRAY_CONSTRUCT(col1))), ROW_HASH = MD5(TO_VARCHAR(ARRAY_CONSTRUCT(col2, col3))) WHERE BATCH_KEY = -1 OR BATCH_KEY IS NULL;

结束操作的代码如下：

var cmd = 
 "CALL END_OPERATION(:1,:2,:3,:4,:5,:6,null);";
    try {

    snowflake.execute (
        {sqlText: cmd,binds: [BATCH_KEY,ENTITY,LAYER,SRC,OPERATION,OPERATION_STATUS].map(function(param){return param === undefined ? null : param})},
        );
    return "Succeeded.";  

    }
catch (err)  {
    return "Failed: " + err;   
    }

var cmd = 
 "UPDATE TableA SET OPERATION_STATUS=:6,END_DT=current_timestamp,ROW_COUNT=IFNULL(:7,ROW_COUNT) WHERE BATCH_KEY=:1 AND ENTITY_NAME=:2 AND LAYER_NAME=:3 AND SRC=:4 AND OPERATION_NAME=:5";
    try {

    snowflake.execute (
        {sqlText: cmd,binds: [BATCH_KEY,ENTITY,LAYER,SRC,OPERATION,OPERATION_STATUS,ROW_COUNT].map(function(param){return param === undefined ? null : param})},
        );
    return "Succeeded.";  

    }
catch (err)  {
    return "Failed: " + err;   
    }

我不明白为什么针对tableb的update语句会被杀死。它马上就要被杀死了。