caiconghui opened a new pull request #3222: Support sharding txn_map_lock into more small map locks to make good performance for txn manage task URL: https://github.com/apache/incubator-doris/pull/3222 This PR is to enhance the peformance for txn manage task, when there are so many txn in doris be, the only one txn_map_lock and additional _txn_locks may cause poor performance, and now we split it into many small locks.
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