在哪种情况下会生成点火诊断？

Question

We are exploring apache ignite, and we want to understand the impact of keeping Ignite system property IGNITE_DIAGNOSTIC_ENABLED with default value true on production.

Answer 1

With this setting an Ignite node conditionally checks internal structures in order to find long-running operations and print a log message. There's also a property IGNITE_LONG_OPERATIONS_DUMP_TIMEOUT controlling the threshold for duration of operations, by default it's 60_000 ms (operations longer than that are considered long-running). I believe that this diagnostics machinery in almost harmless in terms of performance and stability and should be always enabled. It could serve two main purposes: troubleshooting and monitoring (alerting).