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Posted to notifications@iotdb.apache.org by "周沛辰 (Jira)" <ji...@apache.org> on 2022/01/21 03:20:00 UTC

[jira] [Commented] (IOTDB-2459) [cross space compaction] compaction stuck

    [ https://issues.apache.org/jira/browse/IOTDB-2459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17479801#comment-17479801 ] 

周沛辰 commented on IOTDB-2459:
----------------------------

这是因为多个跨空间合并线程的写入被限流了在等待，属于正常现象，可以通过配置文件里的参数compaction_write_throughput_mb_per_sec调大，这样合并速度会快点。

> [cross space compaction] compaction stuck
> -----------------------------------------
>
>                 Key: IOTDB-2459
>                 URL: https://issues.apache.org/jira/browse/IOTDB-2459
>             Project: Apache IoTDB
>          Issue Type: Bug
>          Components: Core/Server
>    Affects Versions: 0.13.0-SNAPSHOT
>            Reporter: 刘珍
>            Assignee: 周沛辰
>            Priority: Major
>              Labels: 0.13.0
>         Attachments: config.properties.1, config.properties.2, image-2022-01-20-20-18-24-166.png, iotdb-engine.properties, stack_1.out
>
>
> 0.13.0 预发版v1
> 问题描述： 对齐/非对齐都有合并卡住的现象。
> 复现过程：
> 1. 关合并，benchmark执行2遍写入顺序数据（见配置文件），这样会产生乱序数据。
> 2. 开合并（见配置文件），约8.5小时后，出现合并卡住。
>  !image-2022-01-20-20-18-24-166.png! 



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