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Quick BI图表查询报错“Max requests queued per destination 1024 exceeded for HttpDestination”

问题描述

仪表板中图表查询失败,报错信息显示如下:

解决方案

该报错为当前数据库连接数超出了默认的限制。需要检查数据库服务端连接进程的状态,或根据如下方法调节连接数限制。

for slave/worker:
sudo su -c 'echo "exchange.http-client.max-requests-queued-per-destination=5000
exchange.http-client.max-connections-per-server=5000" >> /etc/presto/conf/config.properties'
sudo restart presto-server

for master/node:
sudo su -c 'echo "scheduler.http-client.max-requests-queued-per-destination=5000
scheduler.http-client.max-connections-per-server=5000
exchange.http-client.max-requests-queued-per-destination=5000
exchange.http-client.max-connections-per-server=5000" >> /etc/presto/conf/config.properties'
sudo restart presto-server

适用于

  • Quick BI-仪表板
首页 Quick BI图表查询报错“Max requests queued per destination 1024 exceeded for HttpDestination”