Hi everyone, We found a regression about the bookkeeper after bumping the bookie version to 4.15.1 in Pulsar. Details in: https://github.com/apache/pulsar/issues/17520
The regression is introduced with this PR https://github.com/apache/bookkeeper/pull/3383. It has already been fixed and we will include it in 4.15.2 https://github.com/apache/bookkeeper/pull/3480 The problem is that we cannot call await() from an IO thread, even if we don’t have the consolidation in place if the socket buffer is full, that blocking call would cause a deadlock, also without the consolidate the await() was added, under the assumption that all these calls were coming from a thread pool dedicated to read operations. In pulsar's case, we set the numHighPriorityWorkerThreads to 0 to start up a local ensemble for testing. You will be affected if your bookie's numHighPriorityWorkerThreads is setting to 0. By default, it is 8. So if you are using the default configuration, you won't be affected. Thanks, Yong
