Task failed? ---- 原始信息 ---- 发自: Doopah Shaf <[email protected]> 发送时间: 收件人: [email protected] 主题: hadoop job progress going back
Running jobs sometimes displays progress as follows: map 100% reduce 10% and then map 100% reduce 0% What causes this? Is this speculative execution restarting tasks? Cheers, DS
