Constant weld::CONF_TRACE_RUN_KEY

pub const CONF_TRACE_RUN_KEY: &str = "weld.compile.traceExecution";

Specifies whether tracing should be enabled when compiling the program.

Tracing will print, during runtime, the internal Weld instruction before executing it. This has a very large performance overhead and will print lots of output on large inputs: it should only be enabled for debugging (e.g., to identify a crash).

This parameter should be set for compilation.