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    <link rel="alternate" hreflang="en-us" href="https://iotdb.apache.org/UserGuide/Master/Data-Concept/Time-Partition.html"><meta property="og:url" content="https://iotdb.apache.org/zh/UserGuide/Master/Data-Concept/Time-Partition.html"><meta property="og:site_name" content="IoTDB Website"><meta property="og:description" content="时间分区 主要功能 时间分区按照时间分割数据，一个时间分区用于保存某个时间范围内的所有数据。时间分区编号使用自然数表示，0 表示 1970 年 1 月 1 日，每隔 partitioninterval 毫秒后加一。数据通过计算 timestamp / partitioninterval 得到自己所在的时间分区编号，主要配置项如下所示： time\_pa..."><meta property="og:type" content="article"><meta property="og:locale" content="zh-CN"><meta property="og:locale:alternate" content="en-US"><meta property="og:updated_time" content="2023-07-25T09:36:26.000Z"><meta property="article:modified_time" content="2023-07-25T09:36:26.000Z"><script type="application/ld+json">{"@context":"https://schema.org","@type":"Article","headline":"","image":[""],"dateModified":"2023-07-25T09:36:26.000Z","author":[]}</script><link rel="icon" href="/favicon.ico"><meta name="Description" content="Apache IoTDB: Time Series Database for IoT"><meta name="Keywords" content="TSDB, time series, time series database, IoTDB, IoT database, IoT data management,时序数据库, 时间序列管理, IoTDB, 物联网数据库, 实时数据库, 物联网数据管理, 物联网数据"><meta name="baidu-site-verification" content="wfKETzB3OT"><meta name="google-site-verification" content="mZWAoRY0yj_HAr-s47zHCGHzx5Ju-RVm5wDbPnwQYFo"><title>IoTDB Website</title><meta name="description" content="时间分区 主要功能 时间分区按照时间分割数据，一个时间分区用于保存某个时间范围内的所有数据。时间分区编号使用自然数表示，0 表示 1970 年 1 月 1 日，每隔 partitioninterval 毫秒后加一。数据通过计算 timestamp / partitioninterval 得到自己所在的时间分区编号，主要配置项如下所示： time\_pa...">
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108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button></div><div class="toc-wrapper"><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#时间分区">时间分区</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#主要功能">主要功能</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#配置示例">配置示例</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#使用建议">使用建议</a></li><!----><!--]--></ul></li><!--]--></ul><div class="toc-marker" 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--><h2 id="时间分区" tabindex="-1"><a class="header-anchor" href="#时间分区" aria-hidden="true">#</a> 时间分区</h2><h3 id="主要功能" tabindex="-1"><a class="header-anchor" href="#主要功能" aria-hidden="true">#</a> 主要功能</h3><p>时间分区按照时间分割数据，一个时间分区用于保存某个时间范围内的所有数据。时间分区编号使用自然数表示，0 表示 1970 年 1 月 1 日，每隔 partition_interval 毫秒后加一。数据通过计算 timestamp / partition_interval 得到自己所在的时间分区编号，主要配置项如下所示：</p><ul><li>time_partition_interval</li></ul><table><thead><tr><th style="text-align:center;">名字</th><th style="text-align:left;">time_partition_interval</th></tr></thead><tbody><tr><td style="text-align:center;">描述</td><td style="text-align:left;">Database 分区的时间段长度，用户指定的 database 下会使用该时间段进行分区，单位：毫秒</td></tr><tr><td style="text-align:center;">类型</td><td style="text-align:left;">Int64</td></tr><tr><td style="text-align:center;">默认值</td><td style="text-align:left;">604800000</td></tr><tr><td style="text-align:center;">改后生效方式</td><td style="text-align:left;">仅允许在第一次启动服务前修改</td></tr></tbody></table><h3 id="配置示例" tabindex="-1"><a class="header-anchor" href="#配置示例" aria-hidden="true">#</a> 配置示例</h3><p>开启时间分区功能，并设置 partition_interval 为 86400000（一天），则数据的分布情况如下图所示：</p><img style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;" src="https://alioss.timecho.com/docs/img/UserGuide/Data-Concept/Time-Partition/time_partition_example.png?raw=true" alt="time partition example"><ul><li><p>插入一条时间戳为 0 的数据，计算 0 / 86400000 = 0，则该数据会被存储到 0 号文件夹下的TsFile中</p></li><li><p>插入一条时间戳为 1609459200010 的数据，计算 1609459200010 / 86400000 = 18628，则该数据会被存储到 18628 号文件夹下的TsFile中</p></li></ul><h3 id="使用建议" tabindex="-1"><a class="header-anchor" href="#使用建议" aria-hidden="true">#</a> 使用建议</h3><p>使用时间分区功能时，建议同时打开 Memtable 的定时刷盘功能，共 6 个相关配置参数（详情见 <a href="/zh/UserGuide/Master/Reference/DataNode-Config-Manual.html" class="">timed_flush配置项</a>）。</p><ul><li><p>enable_timed_flush_unseq_memtable: 是否开启乱序 Memtable 的定时刷盘，默认打开。</p></li><li><p>enable_timed_flush_seq_memtable: 是否开启顺序 Memtable 的定时刷盘，默认关闭。应当在开启时间分区后打开，定时刷盘非活跃时间分区下的 Memtable，为定时关闭 TsFileProcessor 作准备。</p></li></ul></div><!----><footer class="page-meta"><div class="meta-item edit-link"><a href="https://github.com/apache/iotdb-docs/edit/main/src/zh/UserGuide/Master/Data-Concept/Time-Partition.md" rel="noopener noreferrer" target="_blank" aria-label="发现错误？在 GitHub 上编辑此页" class="nav-link label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->发现错误？在 GitHub 上编辑此页<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="meta-item git-info"><div class="update-time"><span class="label">上次编辑于: </span><!----></div><div class="contributors"><span class="label">贡献者: </span><!--[--><!--[--><span class="contributor" title="email: 105700158+wanghui42@users.noreply.github.com">wanghui42</span><!--]--><!--]--></div></div></footer><!----><!----><!----><!--]--></main><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">master</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2023 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on QQ, WeChat, or Slack. <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> now.</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"> We use <a href="https://analytics.google.com">Google Analytics</a> to collect anonymous, aggregated usage information. </p></footer></div><!--]--><!--]--><!----><!--]--></div>
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