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Posted to notifications@iotdb.apache.org by "Yuan Tian (Jira)" <ji...@apache.org> on 2020/09/21 03:19:00 UTC

[jira] [Created] (IOTDB-899) Remove the lock in leaf node to save memory footprint

Yuan Tian created IOTDB-899:
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             Summary: Remove the lock in leaf node to save memory footprint
                 Key: IOTDB-899
                 URL: https://issues.apache.org/jira/browse/IOTDB-899
             Project: Apache IoTDB
          Issue Type: Improvement
          Components: Core/Engine
            Reporter: Yuan Tian
            Assignee: Yuan Tian


The ReadWriteLock in java costs 120B, in  the current version, each MNode has one lock, so when the number of measurements surges(e.g. reaches 400,000,000), just the lock will take about 5GB memory.



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