chaoyli opened a new pull request #2931: Use ThreadPool to refactor MemTableFlushExecutor URL: https://github.com/apache/incubator-doris/pull/2931 1. MemTableFlushExecutor maintain a ThreadPool to receive FlushTask. 2. FlushToken is used to seperate different tasks from different tablets. Every DeltaWriter of tablet constructs a FlushToken, task in FlushToken are handle serially, task between FlushToken are handle concurrently. 3. I have remove thread limit on data_dir, because of I/O is not the main timer consumer of Flush thread. Much of time is consumed in CPU decoding and compress.
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