merlimat opened a new pull request #1519: Avoid contention in ManagedCursorImpl generated by locking on pendingMarkDeleteOps URL: https://github.com/apache/incubator-pulsar/pull/1519 ### Motivation I have spotted contention in broker threads, that ultimately leads to bumps in the latencies. This happens when running at high-rates with very little batching. The synchronizing on `pendingMarkDeleteOps` was not really necessary to ensure the correctness.
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