markrmiller opened a new pull request #1261: HBASE-23952: Address thread safety issue with Map used in BufferCallB… URL: https://github.com/apache/hbase/pull/1261 …eforeInitHandler. id2Call is a HashMap and has a call back method that accesses it that can be run via an executor as well as another method accessing it that can be run from a different thread. id2Call should likely be a ConcurrentHashMap to be shared like this.
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