You are viewing a plain text version of this content. The canonical link for it is here.

Posted to notifications@iotdb.apache.org by "刘珍 (Jira)" <ji...@apache.org> on 2022/04/13 03:33:00 UTC

[jira] [Created] (IOTDB-2898) [ TTL of wal file ] New implementations need to be considered

刘珍 created IOTDB-2898:
-------------------------

             Summary: [ TTL of wal file ] New implementations need to be considered
                 Key: IOTDB-2898
                 URL: https://issues.apache.org/jira/browse/IOTDB-2898
             Project: Apache IoTDB
          Issue Type: Improvement
          Components: Core/WAL
            Reporter: 刘珍
            Assignee: Haiming Zhu


问题描述：
wal_file_ttl_in_ms 这个参数值取值多少不好控制。
需考虑新的实现。
默认值24小时，写入负载大，可能会导致wal文件一直堆积。

比如我的测试场景出现堆积到384GB（benchmark写42分钟产生的wal，如果一直写24小时呢），
benchmark运行2个配置，在第1个配置结束，每个sg下都有1个未刷盘的memtable，
后续的所有写入产生的wal文件都会一直堆积，直到24小时触发wal ttl才会减少。



--
This message was sent by Atlassian Jira
(v8.20.1#820001)