Quick BI自助取数任务下载报错是什么原因，报错详情：“Unexpected Exception: java.io.EOFException message given: Can not read response from server. Expected to read 4 bytes, read 3 bytes before connection was unexpectedly lost. Nested Stack Trace: ** BEGIN NESTED EXCEPTION ** java.io.EOFException MESSAGE: Can not read response from server. ”

问题描述

Quick BI自助取数任务下载报错是什么原因，报错详情：“Unexpected Exception: java.io.EOFException message given: Can not read response from server. Expected to read 4 bytes, read 3 bytes before connection was unexpectedly lost. Nested Stack Trace: ** BEGIN NESTED EXCEPTION ** java.io.EOFException MESSAGE: Can not read response from server. ”

问题原因

自助取数中创建取数任务，产品上根据可视化页面上的配置操作结果来生成SQL下发至数据库进行查询，SQL查询取数时间太长或数据库设置的链接超时的时间太短，导致查询连接断开。

解决方案

根据自助取数下发的查询取数SQL在数据库添加索引，提高查询效率。

适用于

• Quick BI