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Posted to notifications@iotdb.apache.org by "刘珍 (Jira)" <ji...@apache.org> on 2022/02/16 06:52:00 UTC

[jira] [Created] (IOTDB-2549) [Query performance] The query performance of aligned timeseries is slower than that of unaligned timeseries

刘珍 created IOTDB-2549:
-------------------------

             Summary: [Query performance] The query performance of aligned timeseries is slower than that of unaligned timeseries
                 Key: IOTDB-2549
                 URL: https://issues.apache.org/jira/browse/IOTDB-2549
             Project: Apache IoTDB
          Issue Type: Bug
          Components: Core/Query
            Reporter: 刘珍
         Attachments: config.properties.no-vector, config.properties.query, config.properties.vector, image-2022-02-16-14-44-40-880.png, image-2022-02-16-14-44-43-366.png, iotdb-engine.properties, iotdb-env.sh

master-0214
commitID: 
08c46e3a2a45e1190d57ac151c6bdcb89a7b0107

问题描述:
对齐序列的查询性能比非对齐序列慢。
 !image-2022-02-16-14-44-43-366.png! 

复现步骤:
数据库配置文件,benchmark配置文件见附件。
1.测试机器
192.168.10.68
数据库路径:/data/liuzhen_test/0214_iotdb2517
           数据备份:
           data_no-vector
           data_vector

benchmark:
         /data/liuzhen_test/aligned_test/benchmark

2. 生成数据
iotdb关闭合并。
使用config.properties.vector配置生成对齐序列的数据。
使用config.properties.no-vector配置生成非对齐序列的数据。
3. 执行查询
使用config.properties.query配置对比查询性能。




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