merlimat opened a new pull request #1164: Remove toString() invocation in dispatcher path URL: https://github.com/apache/incubator-pulsar/pull/1164 ### Motivation During message dispatch a `Subscription.toString()` is invoked for each message (or batch) with no purpose other than debug logs which are not shown. This is generating lots of `String`, `char[]`, `StringBuilder`, etc. ### Modifications Pass along the `Subscription` instance so that `toString()` is only invoked when printing debug logs.
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