liutang123 opened a new pull request #3294: Use read lock when iterate tablet_map in TabletManager::start_trash_sweep URL: https://github.com/apache/incubator-doris/pull/3294 In our cluster, there are many stream load jobs. We found that these jobs slow down periodically. By add logs, we found that `TabletManager::start_trash_sweep` will take write lock for a long time. In this PR, we split `start_trash_sweep` in two phases: First, iterate the tablet map with read lock. Second, remove the empty tablet in map with write lock.
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