| 类型: | bool |
| 默认: | on |
| 上下文: | user |
| 重新开始: | false |
| 以来: | 11 |
允许领导者进程执行Gather和Gather Merge节点之下的查询计划而不是等待工作者进程。默认值是on。将这个值设置为off会降低工作者由于领导者读取元组速度不够快而被阻塞的可能性，但是要求领导者在产生第一个元组之前等待工作者进程启动。领导者能够帮助或者阻碍性能的程度取决于计划的类型、工作者的数量以及查询时长。
在 StackOverflow
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