官网说明:
https://jmeter.apache.org/usermanual/component_reference.html#HTTP_Request
Retry handling
By default retry has been set to 0 for both HttpClient4 and Java implementations, meaning no retry is attempted.
通过修改配置文件 jmeter.properties
For HttpClient4, the retry count can be overridden by setting the relevant JMeter property, for example:
httpclient4.retrycount=3
With HC4 Implementation, retry will be done on Idempotent Http Methods by default. If you want to retry for all methods, then set property
httpclient4.request_sent_retry_enabled=true
Note that the Java implementation does not retry neither by default