merlimat commented on PR #3596:
URL: https://github.com/apache/bookkeeper/pull/3596#issuecomment-1298699740
@hangc0276 the `log.debug("xxx {}", var)` is in many cases allocating
objects on the heap for the variable arguments, even when the log level is info
or above. Using the `if (log.isDebugEnabled()) {...}` avoids all allocations.
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