<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <title> </title>
    <meta name="generator" content="VuePress 1.8.2">
    <link rel="icon" href="/favicon.ico">
    <meta name="description" content=" ">
    <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">
    
    <link rel="preload" href="/assets/css/0.styles.ccadf850.css" as="style"><link rel="preload" href="/assets/js/app.9c03bb74.js" as="script"><link rel="preload" href="/assets/js/3.e95317f3.js" as="script"><link rel="preload" href="/assets/js/529.7f05b847.js" as="script"><link rel="prefetch" href="/assets/js/10.77e7d27b.js"><link rel="prefetch" href="/assets/js/100.ce37c53f.js"><link rel="prefetch" href="/assets/js/101.ab370749.js"><link rel="prefetch" href="/assets/js/102.4db55384.js"><link rel="prefetch" href="/assets/js/103.28a00d56.js"><link rel="prefetch" href="/assets/js/104.aaf85214.js"><link rel="prefetch" href="/assets/js/105.eb973f15.js"><link rel="prefetch" href="/assets/js/106.007d9ae6.js"><link rel="prefetch" href="/assets/js/107.35199171.js"><link rel="prefetch" href="/assets/js/108.2f080778.js"><link rel="prefetch" href="/assets/js/109.4a3db7c3.js"><link rel="prefetch" href="/assets/js/11.242ea813.js"><link rel="prefetch" href="/assets/js/110.121c12b0.js"><link rel="prefetch" href="/assets/js/111.2d907f27.js"><link rel="prefetch" href="/assets/js/112.cd3fc3c6.js"><link rel="prefetch" href="/assets/js/113.60360e14.js"><link rel="prefetch" href="/assets/js/114.b1977cbf.js"><link rel="prefetch" href="/assets/js/115.71389e78.js"><link rel="prefetch" href="/assets/js/116.c495c800.js"><link rel="prefetch" href="/assets/js/117.f6a4a5d4.js"><link rel="prefetch" href="/assets/js/118.986551b6.js"><link rel="prefetch" href="/assets/js/119.ccf52dd9.js"><link rel="prefetch" href="/assets/js/12.643b0fb0.js"><link rel="prefetch" href="/assets/js/120.c21aafd0.js"><link rel="prefetch" href="/assets/js/121.448ace52.js"><link rel="prefetch" href="/assets/js/122.37b6650b.js"><link rel="prefetch" href="/assets/js/123.096531cd.js"><link rel="prefetch" href="/assets/js/124.6d8ba356.js"><link rel="prefetch" href="/assets/js/125.b053a479.js"><link rel="prefetch" href="/assets/js/126.32856698.js"><link rel="prefetch" href="/assets/js/127.211c2b9f.js"><link rel="prefetch" href="/assets/js/128.f7cd241a.js"><link rel="prefetch" href="/assets/js/129.8983f959.js"><link rel="prefetch" href="/assets/js/13.c58bffc8.js"><link rel="prefetch" href="/assets/js/130.27448489.js"><link rel="prefetch" href="/assets/js/131.f74784eb.js"><link rel="prefetch" href="/assets/js/132.9553fdd5.js"><link rel="prefetch" href="/assets/js/133.128c722a.js"><link rel="prefetch" href="/assets/js/134.3e480989.js"><link rel="prefetch" href="/assets/js/135.06b43884.js"><link rel="prefetch" href="/assets/js/136.6a6503c4.js"><link rel="prefetch" href="/assets/js/137.f79fb732.js"><link rel="prefetch" href="/assets/js/138.c519ee60.js"><link rel="prefetch" href="/assets/js/139.269b4122.js"><link rel="prefetch" href="/assets/js/14.939be0f9.js"><link rel="prefetch" href="/assets/js/140.8acac491.js"><link rel="prefetch" href="/assets/js/141.5739ba5c.js"><link rel="prefetch" href="/assets/js/142.0a0bb60d.js"><link rel="prefetch" href="/assets/js/143.2849d1b8.js"><link rel="prefetch" href="/assets/js/144.40806d0f.js"><link rel="prefetch" href="/assets/js/145.f396d071.js"><link rel="prefetch" href="/assets/js/146.3f935af5.js"><link rel="prefetch" href="/assets/js/147.6ab3b033.js"><link rel="prefetch" href="/assets/js/148.1e9ba5bb.js"><link rel="prefetch" href="/assets/js/149.be7d35fd.js"><link rel="prefetch" href="/assets/js/15.843fe861.js"><link rel="prefetch" href="/assets/js/150.4553bfe1.js"><link rel="prefetch" href="/assets/js/151.4df7c29e.js"><link rel="prefetch" href="/assets/js/152.7fbfa55b.js"><link rel="prefetch" href="/assets/js/153.b307a91f.js"><link rel="prefetch" href="/assets/js/154.61a099b6.js"><link rel="prefetch" href="/assets/js/155.42bd11f4.js"><link rel="prefetch" href="/assets/js/156.5e14d94b.js"><link rel="prefetch" href="/assets/js/157.a82e8d14.js"><link rel="prefetch" href="/assets/js/158.4ca4cf76.js"><link rel="prefetch" href="/assets/js/159.96ad00f0.js"><link rel="prefetch" href="/assets/js/16.17c1f643.js"><link rel="prefetch" href="/assets/js/160.d27a9f8e.js"><link rel="prefetch" href="/assets/js/161.f69489a3.js"><link rel="prefetch" href="/assets/js/162.d6297e81.js"><link rel="prefetch" href="/assets/js/163.8c7d6f48.js"><link rel="prefetch" href="/assets/js/164.844ec167.js"><link rel="prefetch" href="/assets/js/165.e4109536.js"><link rel="prefetch" href="/assets/js/166.6f922175.js"><link rel="prefetch" href="/assets/js/167.27cb7956.js"><link rel="prefetch" href="/assets/js/168.66d50e2f.js"><link rel="prefetch" href="/assets/js/169.db6a9c1e.js"><link rel="prefetch" href="/assets/js/17.a4028525.js"><link rel="prefetch" href="/assets/js/170.f09f4ab5.js"><link rel="prefetch" href="/assets/js/171.03b885f5.js"><link rel="prefetch" href="/assets/js/172.712c6bac.js"><link rel="prefetch" href="/assets/js/173.72a81752.js"><link rel="prefetch" href="/assets/js/174.80e57cad.js"><link rel="prefetch" href="/assets/js/175.96ef1cbc.js"><link rel="prefetch" href="/assets/js/176.975567d0.js"><link rel="prefetch" href="/assets/js/177.e46b5dad.js"><link rel="prefetch" href="/assets/js/178.277a4463.js"><link rel="prefetch" href="/assets/js/179.a8370836.js"><link rel="prefetch" href="/assets/js/18.122d5826.js"><link rel="prefetch" href="/assets/js/180.66ebf02a.js"><link rel="prefetch" href="/assets/js/181.b5488f9b.js"><link rel="prefetch" href="/assets/js/182.d354a8c6.js"><link rel="prefetch" href="/assets/js/183.87f069d1.js"><link rel="prefetch" href="/assets/js/184.47c2f6fb.js"><link rel="prefetch" href="/assets/js/185.b6a632b5.js"><link rel="prefetch" href="/assets/js/186.9f9a7452.js"><link rel="prefetch" href="/assets/js/187.aadc1931.js"><link rel="prefetch" href="/assets/js/188.90cc251e.js"><link rel="prefetch" href="/assets/js/189.01c9ecc3.js"><link rel="prefetch" href="/assets/js/19.9187dec1.js"><link rel="prefetch" href="/assets/js/190.ff15e49f.js"><link rel="prefetch" href="/assets/js/191.a47f90cd.js"><link rel="prefetch" href="/assets/js/192.1d1eb36e.js"><link rel="prefetch" href="/assets/js/193.39fab29d.js"><link rel="prefetch" href="/assets/js/194.f1cbfa0a.js"><link rel="prefetch" href="/assets/js/195.c40239c9.js"><link rel="prefetch" href="/assets/js/196.0388c356.js"><link rel="prefetch" href="/assets/js/197.55863e11.js"><link rel="prefetch" href="/assets/js/198.a48cc095.js"><link rel="prefetch" href="/assets/js/199.dae24824.js"><link rel="prefetch" href="/assets/js/20.c8df4732.js"><link rel="prefetch" href="/assets/js/200.5b971052.js"><link rel="prefetch" href="/assets/js/201.c6d6883b.js"><link rel="prefetch" href="/assets/js/202.56b1c573.js"><link rel="prefetch" href="/assets/js/203.cacf8999.js"><link rel="prefetch" href="/assets/js/204.899538ec.js"><link rel="prefetch" href="/assets/js/205.fd2fe361.js"><link rel="prefetch" href="/assets/js/206.ea246089.js"><link rel="prefetch" href="/assets/js/207.4dd0bdf9.js"><link rel="prefetch" href="/assets/js/208.30c94a7c.js"><link rel="prefetch" href="/assets/js/209.8d20aa77.js"><link rel="prefetch" href="/assets/js/21.acbfa763.js"><link rel="prefetch" href="/assets/js/210.ad8beb10.js"><link rel="prefetch" href="/assets/js/211.87928df0.js"><link rel="prefetch" href="/assets/js/212.552b3f7c.js"><link rel="prefetch" href="/assets/js/213.2b0a5283.js"><link rel="prefetch" href="/assets/js/214.8cf08cfc.js"><link rel="prefetch" href="/assets/js/215.d3564dd7.js"><link rel="prefetch" href="/assets/js/216.736e26f0.js"><link rel="prefetch" href="/assets/js/217.f9370757.js"><link rel="prefetch" href="/assets/js/218.3205fb4a.js"><link rel="prefetch" href="/assets/js/219.fd6ed6fa.js"><link rel="prefetch" href="/assets/js/22.1e7200c8.js"><link rel="prefetch" href="/assets/js/220.d72b3bb1.js"><link rel="prefetch" href="/assets/js/221.7e1fb00c.js"><link rel="prefetch" href="/assets/js/222.f520de95.js"><link rel="prefetch" href="/assets/js/223.494442ca.js"><link rel="prefetch" href="/assets/js/224.642062b0.js"><link rel="prefetch" href="/assets/js/225.9b6f0752.js"><link rel="prefetch" href="/assets/js/226.4868d0a5.js"><link rel="prefetch" href="/assets/js/227.6ba50795.js"><link rel="prefetch" href="/assets/js/228.96c32a84.js"><link rel="prefetch" href="/assets/js/229.79ec0103.js"><link rel="prefetch" href="/assets/js/23.91ba0b88.js"><link rel="prefetch" href="/assets/js/230.eb3c9a16.js"><link rel="prefetch" href="/assets/js/231.dc2fe2df.js"><link rel="prefetch" href="/assets/js/232.5a6632a5.js"><link rel="prefetch" href="/assets/js/233.f79fadcf.js"><link rel="prefetch" href="/assets/js/234.bd229dea.js"><link rel="prefetch" href="/assets/js/235.b9343eea.js"><link rel="prefetch" href="/assets/js/236.39a58653.js"><link rel="prefetch" href="/assets/js/237.d795e1ce.js"><link rel="prefetch" href="/assets/js/238.0357593a.js"><link rel="prefetch" href="/assets/js/239.a96f58b0.js"><link rel="prefetch" href="/assets/js/24.de37758e.js"><link rel="prefetch" href="/assets/js/240.5023ae7f.js"><link rel="prefetch" href="/assets/js/241.b8bfff76.js"><link rel="prefetch" href="/assets/js/242.1006f57d.js"><link rel="prefetch" href="/assets/js/243.177605aa.js"><link rel="prefetch" href="/assets/js/244.49b5cc23.js"><link rel="prefetch" href="/assets/js/245.26270fbd.js"><link rel="prefetch" href="/assets/js/246.5ddc708b.js"><link rel="prefetch" href="/assets/js/247.adc9b00e.js"><link rel="prefetch" href="/assets/js/248.0dddc45e.js"><link rel="prefetch" href="/assets/js/249.86245d4b.js"><link rel="prefetch" href="/assets/js/25.77e4633a.js"><link rel="prefetch" href="/assets/js/250.ca664993.js"><link rel="prefetch" href="/assets/js/251.4110130e.js"><link rel="prefetch" href="/assets/js/252.69e52586.js"><link rel="prefetch" href="/assets/js/253.6a0b34fb.js"><link rel="prefetch" href="/assets/js/254.6d43bbe7.js"><link rel="prefetch" href="/assets/js/255.ef51c14f.js"><link rel="prefetch" href="/assets/js/256.e30632ae.js"><link rel="prefetch" href="/assets/js/257.8474f813.js"><link rel="prefetch" href="/assets/js/258.f4b72fd8.js"><link rel="prefetch" href="/assets/js/259.f9b80571.js"><link rel="prefetch" href="/assets/js/26.bc913725.js"><link rel="prefetch" href="/assets/js/260.890c3824.js"><link rel="prefetch" href="/assets/js/261.7a0e64a4.js"><link rel="prefetch" href="/assets/js/262.f1795204.js"><link rel="prefetch" href="/assets/js/263.4645793a.js"><link rel="prefetch" href="/assets/js/264.cedced53.js"><link rel="prefetch" href="/assets/js/265.f5999224.js"><link rel="prefetch" href="/assets/js/266.796b7845.js"><link rel="prefetch" href="/assets/js/267.6a6e0b45.js"><link rel="prefetch" href="/assets/js/268.e31ccc5d.js"><link rel="prefetch" href="/assets/js/269.87ec3c50.js"><link rel="prefetch" href="/assets/js/27.353617df.js"><link rel="prefetch" href="/assets/js/270.10c1f626.js"><link rel="prefetch" href="/assets/js/271.951311af.js"><link rel="prefetch" href="/assets/js/272.b88b9e6e.js"><link rel="prefetch" href="/assets/js/273.60491e24.js"><link rel="prefetch" href="/assets/js/274.256ac066.js"><link rel="prefetch" href="/assets/js/275.bc626957.js"><link rel="prefetch" href="/assets/js/276.bf42d85f.js"><link rel="prefetch" href="/assets/js/277.195beb55.js"><link rel="prefetch" href="/assets/js/278.f7da5f89.js"><link rel="prefetch" href="/assets/js/279.6238db1e.js"><link rel="prefetch" href="/assets/js/28.0a801078.js"><link rel="prefetch" href="/assets/js/280.4a586292.js"><link rel="prefetch" href="/assets/js/281.2b5d75c2.js"><link rel="prefetch" href="/assets/js/282.d71dd9d3.js"><link rel="prefetch" href="/assets/js/283.39b9ec0e.js"><link rel="prefetch" href="/assets/js/284.306b0a13.js"><link rel="prefetch" href="/assets/js/285.8e9ec7da.js"><link rel="prefetch" href="/assets/js/286.4c15caa2.js"><link rel="prefetch" href="/assets/js/287.4b071b23.js"><link rel="prefetch" href="/assets/js/288.8b780706.js"><link rel="prefetch" href="/assets/js/289.789f44e7.js"><link rel="prefetch" href="/assets/js/29.015a0cef.js"><link rel="prefetch" href="/assets/js/290.faf33e36.js"><link rel="prefetch" href="/assets/js/291.7fe43457.js"><link rel="prefetch" href="/assets/js/292.e00b421d.js"><link rel="prefetch" href="/assets/js/293.010cbc8b.js"><link rel="prefetch" href="/assets/js/294.dbc158e3.js"><link rel="prefetch" href="/assets/js/295.1e94dacc.js"><link rel="prefetch" href="/assets/js/296.77ae03d2.js"><link rel="prefetch" href="/assets/js/297.e548ba7e.js"><link rel="prefetch" href="/assets/js/298.9e64d086.js"><link rel="prefetch" href="/assets/js/299.a9495179.js"><link rel="prefetch" href="/assets/js/30.03cf4852.js"><link rel="prefetch" href="/assets/js/300.4a34e85e.js"><link rel="prefetch" href="/assets/js/301.646c292f.js"><link rel="prefetch" href="/assets/js/302.992ba1a4.js"><link rel="prefetch" href="/assets/js/303.2fa1659c.js"><link rel="prefetch" href="/assets/js/304.45ec5f49.js"><link rel="prefetch" href="/assets/js/305.c920feb8.js"><link rel="prefetch" href="/assets/js/306.9adbbd88.js"><link rel="prefetch" href="/assets/js/307.9236e6dd.js"><link rel="prefetch" href="/assets/js/308.f1153048.js"><link rel="prefetch" href="/assets/js/309.160e8998.js"><link rel="prefetch" href="/assets/js/31.9af92350.js"><link rel="prefetch" href="/assets/js/310.264c84d3.js"><link rel="prefetch" href="/assets/js/311.b0722a23.js"><link rel="prefetch" href="/assets/js/312.d6db71aa.js"><link rel="prefetch" href="/assets/js/313.56c40b4a.js"><link rel="prefetch" href="/assets/js/314.4430b382.js"><link rel="prefetch" href="/assets/js/315.c70120b9.js"><link rel="prefetch" href="/assets/js/316.f8399289.js"><link rel="prefetch" href="/assets/js/317.1de6d257.js"><link rel="prefetch" href="/assets/js/318.91c96271.js"><link rel="prefetch" href="/assets/js/319.eb7b75c1.js"><link rel="prefetch" href="/assets/js/32.e5e702b0.js"><link rel="prefetch" href="/assets/js/320.cc4206e7.js"><link rel="prefetch" href="/assets/js/321.a4b9d736.js"><link rel="prefetch" href="/assets/js/322.5aae6989.js"><link rel="prefetch" href="/assets/js/323.e4fd51b3.js"><link rel="prefetch" href="/assets/js/324.1ba3ee32.js"><link rel="prefetch" href="/assets/js/325.d92a5a32.js"><link rel="prefetch" href="/assets/js/326.176dd708.js"><link rel="prefetch" href="/assets/js/327.974ddc21.js"><link rel="prefetch" href="/assets/js/328.7be0fd73.js"><link rel="prefetch" href="/assets/js/329.c7ddf3b9.js"><link rel="prefetch" href="/assets/js/33.d0eafbb9.js"><link rel="prefetch" href="/assets/js/330.bd9e4aaa.js"><link rel="prefetch" href="/assets/js/331.0930a354.js"><link rel="prefetch" href="/assets/js/332.fb2e17c5.js"><link rel="prefetch" href="/assets/js/333.6a30384d.js"><link rel="prefetch" href="/assets/js/334.c3a65c90.js"><link rel="prefetch" href="/assets/js/335.925d4e40.js"><link rel="prefetch" href="/assets/js/336.d57e25c2.js"><link rel="prefetch" href="/assets/js/337.0231a5b2.js"><link rel="prefetch" href="/assets/js/338.6cda9f6a.js"><link rel="prefetch" href="/assets/js/339.bbf73c4f.js"><link rel="prefetch" href="/assets/js/34.85849ed4.js"><link rel="prefetch" href="/assets/js/340.f50cc5bc.js"><link rel="prefetch" href="/assets/js/341.bb11443e.js"><link rel="prefetch" href="/assets/js/342.0657d637.js"><link rel="prefetch" href="/assets/js/343.6757b598.js"><link rel="prefetch" href="/assets/js/344.eb356eae.js"><link rel="prefetch" href="/assets/js/345.e61fd7a0.js"><link rel="prefetch" href="/assets/js/346.cbfb04f4.js"><link rel="prefetch" href="/assets/js/347.38bbefab.js"><link rel="prefetch" href="/assets/js/348.53daceee.js"><link rel="prefetch" href="/assets/js/349.cf4bf014.js"><link rel="prefetch" href="/assets/js/35.5612ab6a.js"><link rel="prefetch" href="/assets/js/350.1066134b.js"><link rel="prefetch" href="/assets/js/351.70c60d7d.js"><link rel="prefetch" href="/assets/js/352.38c78131.js"><link rel="prefetch" href="/assets/js/353.8c271a83.js"><link rel="prefetch" href="/assets/js/354.f07fe232.js"><link rel="prefetch" href="/assets/js/355.75b97cf0.js"><link rel="prefetch" href="/assets/js/356.7e54a7f7.js"><link rel="prefetch" href="/assets/js/357.186ba021.js"><link rel="prefetch" href="/assets/js/358.239bc6cd.js"><link rel="prefetch" href="/assets/js/359.5b5efbc0.js"><link rel="prefetch" href="/assets/js/36.5a401e9f.js"><link rel="prefetch" href="/assets/js/360.dc8c37e4.js"><link rel="prefetch" href="/assets/js/361.0ffc00b2.js"><link rel="prefetch" href="/assets/js/362.0b44b216.js"><link rel="prefetch" href="/assets/js/363.957ae19e.js"><link rel="prefetch" href="/assets/js/364.f744f1cf.js"><link rel="prefetch" href="/assets/js/365.228a2005.js"><link rel="prefetch" href="/assets/js/366.6dc37394.js"><link rel="prefetch" href="/assets/js/367.56ff065b.js"><link rel="prefetch" href="/assets/js/368.9689ca0c.js"><link rel="prefetch" href="/assets/js/369.ed6d9c14.js"><link rel="prefetch" href="/assets/js/37.692720e1.js"><link rel="prefetch" href="/assets/js/370.584442b6.js"><link rel="prefetch" href="/assets/js/371.770d40de.js"><link rel="prefetch" href="/assets/js/372.6b44d26d.js"><link rel="prefetch" href="/assets/js/373.4548d4c0.js"><link rel="prefetch" href="/assets/js/374.e347ead4.js"><link rel="prefetch" href="/assets/js/375.774420c2.js"><link rel="prefetch" href="/assets/js/376.4b504e94.js"><link rel="prefetch" href="/assets/js/377.e3d4af2c.js"><link rel="prefetch" href="/assets/js/378.8265e3af.js"><link rel="prefetch" href="/assets/js/379.06514b26.js"><link rel="prefetch" href="/assets/js/38.eebc30e0.js"><link rel="prefetch" href="/assets/js/380.413183d4.js"><link rel="prefetch" href="/assets/js/381.570e7c14.js"><link rel="prefetch" href="/assets/js/382.6e94a17d.js"><link rel="prefetch" href="/assets/js/383.ab06426d.js"><link rel="prefetch" href="/assets/js/384.8cde732c.js"><link rel="prefetch" href="/assets/js/385.edbe545d.js"><link rel="prefetch" href="/assets/js/386.5edbd64b.js"><link rel="prefetch" href="/assets/js/387.d08b9da1.js"><link rel="prefetch" href="/assets/js/388.3cafa76f.js"><link rel="prefetch" href="/assets/js/389.ac1c71b5.js"><link rel="prefetch" href="/assets/js/39.9ccd0236.js"><link rel="prefetch" href="/assets/js/390.e3c6dc5b.js"><link rel="prefetch" href="/assets/js/391.097ce5d5.js"><link rel="prefetch" href="/assets/js/392.6c36a3c8.js"><link rel="prefetch" href="/assets/js/393.cc10c814.js"><link rel="prefetch" href="/assets/js/394.0f496e89.js"><link rel="prefetch" href="/assets/js/395.829eba9f.js"><link rel="prefetch" href="/assets/js/396.3ff26d83.js"><link rel="prefetch" href="/assets/js/397.bee7fd8b.js"><link rel="prefetch" href="/assets/js/398.812712cf.js"><link rel="prefetch" href="/assets/js/399.359fa7fe.js"><link rel="prefetch" href="/assets/js/4.9c4b1c6d.js"><link rel="prefetch" href="/assets/js/40.78497aeb.js"><link rel="prefetch" href="/assets/js/400.39779156.js"><link rel="prefetch" href="/assets/js/401.df776005.js"><link rel="prefetch" href="/assets/js/402.be1f5783.js"><link rel="prefetch" href="/assets/js/403.8856d7b1.js"><link rel="prefetch" href="/assets/js/404.562089b0.js"><link rel="prefetch" href="/assets/js/405.93f42baf.js"><link rel="prefetch" href="/assets/js/406.8dbc7179.js"><link rel="prefetch" href="/assets/js/407.ab430854.js"><link rel="prefetch" href="/assets/js/408.78190c9f.js"><link rel="prefetch" href="/assets/js/409.5885c231.js"><link rel="prefetch" href="/assets/js/41.f483212d.js"><link rel="prefetch" href="/assets/js/410.b081220a.js"><link rel="prefetch" href="/assets/js/411.a36444c4.js"><link rel="prefetch" href="/assets/js/412.ceb1c2f9.js"><link rel="prefetch" href="/assets/js/413.9a587755.js"><link rel="prefetch" href="/assets/js/414.76fbf607.js"><link rel="prefetch" href="/assets/js/415.4dcc07c7.js"><link rel="prefetch" href="/assets/js/416.67a151b4.js"><link rel="prefetch" href="/assets/js/417.8f1f6147.js"><link rel="prefetch" href="/assets/js/418.d5fc9d05.js"><link rel="prefetch" href="/assets/js/419.540dcd2a.js"><link rel="prefetch" href="/assets/js/42.ffb032af.js"><link rel="prefetch" href="/assets/js/420.6e0a10f2.js"><link rel="prefetch" href="/assets/js/421.a6c3c8af.js"><link rel="prefetch" href="/assets/js/422.47653244.js"><link rel="prefetch" href="/assets/js/423.cb7eba6d.js"><link rel="prefetch" href="/assets/js/424.9d5aa304.js"><link rel="prefetch" href="/assets/js/425.d2f6e40e.js"><link rel="prefetch" href="/assets/js/426.d6deb76a.js"><link rel="prefetch" href="/assets/js/427.d39d619c.js"><link rel="prefetch" href="/assets/js/428.6e4e5abb.js"><link rel="prefetch" href="/assets/js/429.0f2edacf.js"><link rel="prefetch" href="/assets/js/43.7406f914.js"><link rel="prefetch" href="/assets/js/430.ddcfba32.js"><link rel="prefetch" href="/assets/js/431.5ecf6e5d.js"><link rel="prefetch" href="/assets/js/432.b578015e.js"><link rel="prefetch" href="/assets/js/433.90540732.js"><link rel="prefetch" href="/assets/js/434.04a8d2c6.js"><link rel="prefetch" href="/assets/js/435.959e7362.js"><link rel="prefetch" href="/assets/js/436.891b6ce7.js"><link rel="prefetch" href="/assets/js/437.7c983dad.js"><link rel="prefetch" href="/assets/js/438.f7e133f1.js"><link rel="prefetch" href="/assets/js/439.692da598.js"><link rel="prefetch" href="/assets/js/44.3bea749e.js"><link rel="prefetch" href="/assets/js/440.2971f4ef.js"><link rel="prefetch" href="/assets/js/441.e12292fb.js"><link rel="prefetch" href="/assets/js/442.08f60114.js"><link rel="prefetch" href="/assets/js/443.9f684f2a.js"><link rel="prefetch" href="/assets/js/444.d100eb74.js"><link rel="prefetch" href="/assets/js/445.733e07b3.js"><link rel="prefetch" href="/assets/js/446.b1a5daaf.js"><link rel="prefetch" href="/assets/js/447.b565b8e7.js"><link rel="prefetch" href="/assets/js/448.c4d1c15e.js"><link rel="prefetch" href="/assets/js/449.f9f855be.js"><link rel="prefetch" href="/assets/js/45.4f6dc502.js"><link rel="prefetch" href="/assets/js/450.3ff3ce7b.js"><link rel="prefetch" href="/assets/js/451.f43857ff.js"><link rel="prefetch" href="/assets/js/452.3a8bb15a.js"><link rel="prefetch" href="/assets/js/453.4d5d4319.js"><link rel="prefetch" href="/assets/js/454.e0838804.js"><link rel="prefetch" href="/assets/js/455.86256c6f.js"><link rel="prefetch" href="/assets/js/456.98d95ce5.js"><link rel="prefetch" href="/assets/js/457.27f821d2.js"><link rel="prefetch" href="/assets/js/458.0e11d249.js"><link rel="prefetch" href="/assets/js/459.6b8af96a.js"><link rel="prefetch" href="/assets/js/46.e460983d.js"><link rel="prefetch" href="/assets/js/460.5294a47f.js"><link rel="prefetch" href="/assets/js/461.5cb7cfb1.js"><link rel="prefetch" href="/assets/js/462.214e91ce.js"><link rel="prefetch" href="/assets/js/463.54494074.js"><link rel="prefetch" href="/assets/js/464.0e1615f7.js"><link rel="prefetch" href="/assets/js/465.c61d57fa.js"><link rel="prefetch" href="/assets/js/466.88c375a9.js"><link rel="prefetch" href="/assets/js/467.b3f00de3.js"><link rel="prefetch" href="/assets/js/468.8f2561ff.js"><link rel="prefetch" href="/assets/js/469.741b348f.js"><link rel="prefetch" href="/assets/js/47.e56ee397.js"><link rel="prefetch" href="/assets/js/470.ba1d5a08.js"><link rel="prefetch" href="/assets/js/471.9842c3d9.js"><link rel="prefetch" href="/assets/js/472.887667b1.js"><link rel="prefetch" href="/assets/js/473.ac9f4dc8.js"><link rel="prefetch" href="/assets/js/474.7ab2ad2f.js"><link rel="prefetch" href="/assets/js/475.04c8df23.js"><link rel="prefetch" href="/assets/js/476.369e6ad4.js"><link rel="prefetch" href="/assets/js/477.cd44b6c4.js"><link rel="prefetch" href="/assets/js/478.1c4e292d.js"><link rel="prefetch" href="/assets/js/479.18311c46.js"><link rel="prefetch" href="/assets/js/48.bec9faeb.js"><link rel="prefetch" href="/assets/js/480.6a119ed5.js"><link rel="prefetch" href="/assets/js/481.6504abc3.js"><link rel="prefetch" href="/assets/js/482.a0850ad4.js"><link rel="prefetch" href="/assets/js/483.11c430e0.js"><link rel="prefetch" href="/assets/js/484.cb6bc4a3.js"><link rel="prefetch" href="/assets/js/485.fef6bd3e.js"><link rel="prefetch" href="/assets/js/486.9cbb009e.js"><link rel="prefetch" href="/assets/js/487.bf3ac79b.js"><link rel="prefetch" href="/assets/js/488.cdeb35a5.js"><link rel="prefetch" href="/assets/js/489.dad79eab.js"><link rel="prefetch" href="/assets/js/49.f271ac34.js"><link rel="prefetch" href="/assets/js/490.61225193.js"><link rel="prefetch" href="/assets/js/491.862665a1.js"><link rel="prefetch" href="/assets/js/492.e16d11e1.js"><link rel="prefetch" href="/assets/js/493.83997cf9.js"><link rel="prefetch" href="/assets/js/494.607eaccf.js"><link rel="prefetch" href="/assets/js/495.47d53a9a.js"><link rel="prefetch" href="/assets/js/496.166c88c4.js"><link rel="prefetch" href="/assets/js/497.3b9635e2.js"><link rel="prefetch" href="/assets/js/498.8e8025ec.js"><link rel="prefetch" href="/assets/js/499.22f6be18.js"><link rel="prefetch" href="/assets/js/5.2a4451ec.js"><link rel="prefetch" href="/assets/js/50.e60dabfc.js"><link rel="prefetch" href="/assets/js/500.517d8628.js"><link rel="prefetch" href="/assets/js/501.c5ae8bda.js"><link rel="prefetch" href="/assets/js/502.3dc27869.js"><link rel="prefetch" href="/assets/js/503.d6cc184c.js"><link rel="prefetch" href="/assets/js/504.203d7395.js"><link rel="prefetch" href="/assets/js/505.6cf56773.js"><link rel="prefetch" href="/assets/js/506.ccaa022c.js"><link rel="prefetch" href="/assets/js/507.1fc56592.js"><link rel="prefetch" href="/assets/js/508.1250eed8.js"><link rel="prefetch" href="/assets/js/509.a1a7285a.js"><link rel="prefetch" href="/assets/js/51.fd01b1a1.js"><link rel="prefetch" href="/assets/js/510.de535a70.js"><link rel="prefetch" href="/assets/js/511.c6a7f5d8.js"><link rel="prefetch" href="/assets/js/512.dca82ab9.js"><link rel="prefetch" href="/assets/js/513.8d501ad4.js"><link rel="prefetch" href="/assets/js/514.b07be8d6.js"><link rel="prefetch" href="/assets/js/515.9ea728dd.js"><link rel="prefetch" href="/assets/js/516.3cccca96.js"><link rel="prefetch" href="/assets/js/517.1d7ee046.js"><link rel="prefetch" href="/assets/js/518.05cb30e8.js"><link rel="prefetch" href="/assets/js/519.f838c1ca.js"><link rel="prefetch" href="/assets/js/52.c17bb00d.js"><link rel="prefetch" href="/assets/js/520.e41e66ce.js"><link rel="prefetch" href="/assets/js/521.4726d233.js"><link rel="prefetch" href="/assets/js/522.045aff30.js"><link rel="prefetch" href="/assets/js/523.9d9b45b5.js"><link rel="prefetch" href="/assets/js/524.9ff01ede.js"><link rel="prefetch" href="/assets/js/525.ba766db5.js"><link rel="prefetch" href="/assets/js/526.9f70e3c0.js"><link rel="prefetch" href="/assets/js/527.1af75ed9.js"><link rel="prefetch" href="/assets/js/528.85194f33.js"><link rel="prefetch" href="/assets/js/53.f69e6824.js"><link rel="prefetch" href="/assets/js/530.4f9b779c.js"><link rel="prefetch" href="/assets/js/531.54b0ee66.js"><link rel="prefetch" href="/assets/js/532.7107ab4b.js"><link rel="prefetch" href="/assets/js/54.29e4a381.js"><link rel="prefetch" href="/assets/js/55.9d4b8667.js"><link rel="prefetch" href="/assets/js/56.00691552.js"><link rel="prefetch" href="/assets/js/57.c942381a.js"><link rel="prefetch" href="/assets/js/58.89130d49.js"><link rel="prefetch" href="/assets/js/59.f0da0bf3.js"><link rel="prefetch" href="/assets/js/6.3450075a.js"><link rel="prefetch" href="/assets/js/60.53b7d88b.js"><link rel="prefetch" href="/assets/js/61.b70ccd57.js"><link rel="prefetch" href="/assets/js/62.ca60798b.js"><link rel="prefetch" href="/assets/js/63.ba337fc9.js"><link rel="prefetch" href="/assets/js/64.ed6b77b6.js"><link rel="prefetch" href="/assets/js/65.1dbdb0ee.js"><link rel="prefetch" href="/assets/js/66.aa4ead2c.js"><link rel="prefetch" href="/assets/js/67.29edf638.js"><link rel="prefetch" href="/assets/js/68.b614ca3d.js"><link rel="prefetch" href="/assets/js/69.8f65fe0a.js"><link rel="prefetch" href="/assets/js/7.c5c54fb4.js"><link rel="prefetch" href="/assets/js/70.dade9939.js"><link rel="prefetch" href="/assets/js/71.dbdc4216.js"><link rel="prefetch" href="/assets/js/72.37c2db55.js"><link rel="prefetch" href="/assets/js/73.40fb8290.js"><link rel="prefetch" href="/assets/js/74.6fb3093b.js"><link rel="prefetch" href="/assets/js/75.d96505fe.js"><link rel="prefetch" href="/assets/js/76.9c4f055c.js"><link rel="prefetch" href="/assets/js/77.3c1e294c.js"><link rel="prefetch" href="/assets/js/78.202bcf6c.js"><link rel="prefetch" href="/assets/js/79.4e6d41b0.js"><link rel="prefetch" href="/assets/js/8.68d2fe5c.js"><link rel="prefetch" href="/assets/js/80.8358bd99.js"><link rel="prefetch" href="/assets/js/81.b603dd42.js"><link rel="prefetch" href="/assets/js/82.bebbea34.js"><link rel="prefetch" href="/assets/js/83.764d566c.js"><link rel="prefetch" href="/assets/js/84.4867883c.js"><link rel="prefetch" href="/assets/js/85.bfe2dffd.js"><link rel="prefetch" href="/assets/js/86.0d9031f6.js"><link rel="prefetch" href="/assets/js/87.88112820.js"><link rel="prefetch" href="/assets/js/88.208d123f.js"><link rel="prefetch" href="/assets/js/89.75ed1194.js"><link rel="prefetch" href="/assets/js/9.e94d434b.js"><link rel="prefetch" href="/assets/js/90.7f184d9a.js"><link rel="prefetch" href="/assets/js/91.6595997c.js"><link rel="prefetch" href="/assets/js/92.791938c3.js"><link rel="prefetch" href="/assets/js/93.8bd8d987.js"><link rel="prefetch" href="/assets/js/94.0e7734d3.js"><link rel="prefetch" href="/assets/js/95.45187f8f.js"><link rel="prefetch" href="/assets/js/96.6b29372c.js"><link rel="prefetch" href="/assets/js/97.7eaeb339.js"><link rel="prefetch" href="/assets/js/98.391d8ef3.js"><link rel="prefetch" href="/assets/js/99.8e370fea.js"><link rel="prefetch" href="/assets/js/vendors~docsearch.eff714eb.js">
    <link rel="stylesheet" href="/assets/css/0.styles.ccadf850.css">
  </head>
  <body>
    <div id="app" data-server-rendered="true"><div class="theme-container"><header class="navbar"><div class="sidebar-button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" role="img" viewBox="0 0 448 512" class="icon"><path fill="currentColor" d="M436 124H12c-6.627 0-12-5.373-12-12V80c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12z"></path></svg></div> <a href="/zh/" class="home-link router-link-active"><img src="/img/logo.png" alt=" " class="logo"></a> <div class="links"><div class="search-box"><input aria-label="Search" autocomplete="off" spellcheck="false" value=""> <!----></div> <nav class="nav-links can-hide"><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">文档</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/zh/UserGuide/Master/Get Started/QuickStart.html" class="nav-link">In progress</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.11.x/Get Started/QuickStart.html" class="nav-link">V0.11.x</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.10.x/Get Started/QuickStart.html" class="nav-link">V0.10.x</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.9.x/0-Get Started/1-QuickStart.html" class="nav-link">V0.9.x</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.8.x/0-Get Started/1-QuickStart.html" class="nav-link">V0.8.x</a></li></ul></div></div><div class="nav-item"><a href="/zh/SystemDesign/Architecture/Architecture.html" class="nav-link">系统设计</a></div><div class="nav-item"><a href="/zh/Download/" class="nav-link">下载</a></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">社区</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="https://cwiki.apache.org/confluence/display/iotdb" class="nav-link external">
  Wiki
  <!----></a></li><li class="dropdown-item"><!----> <a href="/zh/Community/Community-Project Committers.html" class="nav-link">开发人员</a></li><li class="dropdown-item"><!----> <a href="/zh/Community/Community-Powered By.html" class="nav-link">技术支持</a></li><li class="dropdown-item"><!----> <a href="/Community/Materials.html" class="nav-link">活动与报告</a></li><li class="dropdown-item"><!----> <a href="/zh/Community/Feedback.html" class="nav-link">交流与反馈</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">开发</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/zh/Development/VoteRelease.html" class="nav-link">如何投票</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/HowToCommit.html" class="nav-link">如何提交代码</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/Committer.html" class="nav-link">成为Committer</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/ContributeGuide.html" class="nav-link">项目开发指南</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/format-changelist.html" class="nav-link">TsFile的更改列表</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/rpc-changelist.html" class="nav-link">RPC变更清单</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">ASF</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="http://www.apache.org/" class="nav-link external">
  基金会
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/licenses/" class="nav-link external">
  许可证
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/security/" class="nav-link external">
  安全
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/foundation/sponsorship.html" class="nav-link external">
  赞助
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/foundation/thanks.html" class="nav-link external">
  致谢
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/events/current-event" class="nav-link external">
  活动
  <!----></a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">语言</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/UserGuide/V0.9.x/8-System Design/1-Hierarchy.html" class="nav-link">English</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.9.x/8-System Design/1-Hierarchy.html" class="nav-link">简体中文</a></li></ul></div></div> <a href="https://github.com/apache/iotdb.git" target="_blank" rel="noopener noreferrer" class="repo-link">
    gitHub
    <span><svg 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" class="icon outbound"><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="sr-only">(opens new window)</span></span></a></nav></div></header> <div class="sidebar-mask"></div> <aside class="sidebar"><nav class="nav-links"><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">文档</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/zh/UserGuide/Master/Get Started/QuickStart.html" class="nav-link">In progress</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.11.x/Get Started/QuickStart.html" class="nav-link">V0.11.x</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.10.x/Get Started/QuickStart.html" class="nav-link">V0.10.x</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.9.x/0-Get Started/1-QuickStart.html" class="nav-link">V0.9.x</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.8.x/0-Get Started/1-QuickStart.html" class="nav-link">V0.8.x</a></li></ul></div></div><div class="nav-item"><a href="/zh/SystemDesign/Architecture/Architecture.html" class="nav-link">系统设计</a></div><div class="nav-item"><a href="/zh/Download/" class="nav-link">下载</a></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">社区</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="https://cwiki.apache.org/confluence/display/iotdb" class="nav-link external">
  Wiki
  <!----></a></li><li class="dropdown-item"><!----> <a href="/zh/Community/Community-Project Committers.html" class="nav-link">开发人员</a></li><li class="dropdown-item"><!----> <a href="/zh/Community/Community-Powered By.html" class="nav-link">技术支持</a></li><li class="dropdown-item"><!----> <a href="/Community/Materials.html" class="nav-link">活动与报告</a></li><li class="dropdown-item"><!----> <a href="/zh/Community/Feedback.html" class="nav-link">交流与反馈</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">开发</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/zh/Development/VoteRelease.html" class="nav-link">如何投票</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/HowToCommit.html" class="nav-link">如何提交代码</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/Committer.html" class="nav-link">成为Committer</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/ContributeGuide.html" class="nav-link">项目开发指南</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/format-changelist.html" class="nav-link">TsFile的更改列表</a></li><li class="dropdown-item"><!----> <a href="/zh/Development/rpc-changelist.html" class="nav-link">RPC变更清单</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">ASF</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="http://www.apache.org/" class="nav-link external">
  基金会
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/licenses/" class="nav-link external">
  许可证
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/security/" class="nav-link external">
  安全
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/foundation/sponsorship.html" class="nav-link external">
  赞助
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/foundation/thanks.html" class="nav-link external">
  致谢
  <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/events/current-event" class="nav-link external">
  活动
  <!----></a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">语言</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/UserGuide/V0.9.x/8-System Design/1-Hierarchy.html" class="nav-link">English</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.9.x/8-System Design/1-Hierarchy.html" class="nav-link">简体中文</a></li></ul></div></div> <a href="https://github.com/apache/iotdb.git" target="_blank" rel="noopener noreferrer" class="repo-link">
    gitHub
    <span><svg 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" class="icon outbound"><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="sr-only">(opens new window)</span></span></a></nav>  <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>IoTDB用户手册 (V0.9.x)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>0-开始</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>1-概览</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>2-概念</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>3-服务器端</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>4-客户端</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>5-操作指南</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>6-系统工具</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>7-生态集成</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>8-系统设计</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/zh/UserGuide/V0.9.x/8-System Design/1-Hierarchy.html" class="active sidebar-link">层次结构</a></li><li><a href="/zh/UserGuide/V0.9.x/8-System Design/2-Files.html" class="sidebar-link">文件</a></li><li><a href="/zh/UserGuide/V0.9.x/8-System Design/3-Writing Data on HDFS.html" class="sidebar-link">使用HDFS存储数据</a></li><li><a href="/zh/UserGuide/V0.9.x/8-System Design/4-Shared Nothing Cluster.html" class="sidebar-link">Shared-nothing 架构</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h1 id="层次结构"><a href="#层次结构" class="header-anchor">#</a> 层次结构</h1> <h2 id="_1-tsfile设计"><a href="#_1-tsfile设计" class="header-anchor">#</a> 1. TsFile设计</h2> <p>这是对TsFile设计细节的介绍。</p> <h3 id="_1-1-可变存储"><a href="#_1-1-可变存储" class="header-anchor">#</a> 1.1 可变存储</h3> <ul><li><strong>大端</strong>
​
<ul><li>例如, <code>int</code> <code>0x8</code>将被存储为<code>00 00 00 08</code>，而不是<code>08 00 00 00</code>。</li></ul></li> <li><strong>可变长度的字符串</strong> <ul><li>格式为<code>int size</code>加<code>Sring literal</code>。 大小可以为零。</li> <li>大小等于此字符串将占用的字节数，并且可能不等于该字符串的长度。</li> <li>例如，“ sensor_1”将被存储为<code>00 00 00 08</code>加上“ sensor_1”的编码（ASCII）。</li> <li>请注意，对于“魔术字符串”（文件签名）“ TsFilev0.8.0”，大小（12）和编码（ASCII）是固定的，因此无需在该字符串文字前放置大小。</li></ul></li> <li><strong>数据类型硬编码</strong> <ul><li>0: BOOLEAN</li> <li>1: INT32 (<code>int</code>)</li> <li>2: INT64 (<code>long</code>)</li> <li>3: FLOAT</li> <li>4: DOUBLE</li> <li>5: TEXT (<code>String</code>)</li></ul></li> <li><strong>编码类型硬编码</strong> <ul><li>0: PLAIN</li> <li>1: PLAIN_DICTIONARY</li> <li>2: RLE</li> <li>3: DIFF</li> <li>4: TS_2DIFF</li> <li>5: BITMAP</li> <li>6: GORILLA</li> <li>7: REGULAR</li></ul></li> <li><strong>压缩类型硬编码</strong> <ul><li>0: UNCOMPRESSED</li> <li>1: SNAPPY</li> <li>2: GZIP</li> <li>3: LZO</li> <li>4: SDT</li> <li>5: PAA</li> <li>6: PLA</li></ul></li> <li><strong>TsDigest统计类型硬编码</strong> <ul><li>0: min_value</li> <li>1: max_value</li> <li>2: first_value</li> <li>3: last_value</li> <li>4: sum_value</li></ul></li></ul> <h3 id="_1-2-tsfile概述"><a href="#_1-2-tsfile概述" class="header-anchor">#</a> 1.2 TsFile概述</h3> <p>这是有关TsFile结构的图。</p> <p><img src="https://user-images.githubusercontent.com/40447846/61616997-6fad1300-ac9c-11e9-9c17-46785ebfbc88.png" alt="TsFile Breakdown"></p> <h4 id="_1-2-1-魔术字符串和版本号"><a href="#_1-2-1-魔术字符串和版本号" class="header-anchor">#</a> 1.2.1 魔术字符串和版本号</h4> <p>TsFile以6字节的魔术字符串（<code>TsFile</code>）和6字节的版本号（<code>000001</code>）开头。</p> <h4 id="_1-2-2-数据"><a href="#_1-2-2-数据" class="header-anchor">#</a> 1.2.2 数据</h4> <p>TsFile文件的内容可以分为两部分：数据和元数据。 数据和元数据之间有一个字节<code>0x02</code>作为标记。</p> <p>数据部分是一个<code>ChunkGroup</code>数组，每个ChunkGroup代表一个* device *。</p> <h5 id="块组"><a href="#块组" class="header-anchor">#</a> 块组</h5> <p><code>ChunkGroup</code>具有一个<code>Chunk</code>数组，一个后续字节<code>0x00</code>作为标记以及一个<code>ChunkFooter</code>。</p> <h5 id="块"><a href="#块" class="header-anchor">#</a> 块</h5> <p><code>块</code>代表<em>传感器</em>。 在<code>ChunkHeader</code>和<code>Page</code>数组之后，有一个字节<code>0x01</code>作为标记。</p> <h5 id="块头"><a href="#块头" class="header-anchor">#</a> 块头</h5> <table><thead><tr><th style="text-align:center;">Member Description</th> <th style="text-align:center;">Member Type</th></tr></thead> <tbody><tr><td style="text-align:center;">该传感器的名称（measurementID）</td> <td style="text-align:center;">String</td></tr> <tr><td style="text-align:center;">这个块的大小</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">该卡盘的数据类型</td> <td style="text-align:center;">short</td></tr> <tr><td style="text-align:center;">页数</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">压缩类型</td> <td style="text-align:center;">short</td></tr> <tr><td style="text-align:center;">编码方式</td> <td style="text-align:center;">short</td></tr> <tr><td style="text-align:center;">最大墓碑时间</td> <td style="text-align:center;">long</td></tr></tbody></table> <h5 id="页"><a href="#页" class="header-anchor">#</a> 页</h5> <p>页面代表块中的一些数据。 它包含一个PageHeader和实际数据（编码的时间值对）。</p> <p>PageHeader结构</p> <table><thead><tr><th style="text-align:center;">Member Description</th> <th style="text-align:center;">Member Type</th></tr></thead> <tbody><tr><td style="text-align:center;">压缩前的数据大小</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">压缩后的数据大小（如果使用SNAPPY）</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">值数</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">最大时间戳</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">最小时间戳</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">页面最大值</td> <td style="text-align:center;">Type of the page</td></tr> <tr><td style="text-align:center;">页面最小值</td> <td style="text-align:center;">Type of the page</td></tr> <tr><td style="text-align:center;">页面的第一个值</td> <td style="text-align:center;">Type of the page</td></tr> <tr><td style="text-align:center;">页面总和</td> <td style="text-align:center;">double</td></tr> <tr><td style="text-align:center;">页面的最后一个值</td> <td style="text-align:center;">Type of the page</td></tr></tbody></table> <h5 id="chunkgroupfooter"><a href="#chunkgroupfooter" class="header-anchor">#</a> ChunkGroupFooter</h5> <table><thead><tr><th style="text-align:center;">Member Description</th> <th style="text-align:center;">Member Type</th></tr></thead> <tbody><tr><td style="text-align:center;">设备id</td> <td style="text-align:center;">String</td></tr> <tr><td style="text-align:center;">ChunkGroup的数据大小</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">块数</td> <td style="text-align:center;">int</td></tr></tbody></table> <h4 id="_1-2-3-元数据"><a href="#_1-2-3-元数据" class="header-anchor">#</a> 1.2.3  元数据</h4> <h5 id="_1-2-3-1-tsdevicemetadata"><a href="#_1-2-3-1-tsdevicemetadata" class="header-anchor">#</a> 1.2.3.1 TsDeviceMetaData</h5> <p>元数据的第一部分是<code>TsDeviceMetaData</code></p> <table><thead><tr><th style="text-align:center;">Member Description</th> <th style="text-align:center;">Member Type</th></tr></thead> <tbody><tr><td style="text-align:center;">开始时间</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">时间结束</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">组块数</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">ChunkGroup元数据列表</td> <td style="text-align:center;">list</td></tr></tbody></table> <h6 id="chunkgroupmetadata"><a href="#chunkgroupmetadata" class="header-anchor">#</a> ChunkGroupMetaData</h6> <table><thead><tr><th style="text-align:center;">Member Description</th> <th style="text-align:center;">Member Type</th></tr></thead> <tbody><tr><td style="text-align:center;">设备编号</td> <td style="text-align:center;">String</td></tr> <tr><td style="text-align:center;">ChunkGroup的起始偏移量</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">块组的结束偏移</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">版</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">ChunkMetaData的数量</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">ChunkMetaData列表</td> <td style="text-align:center;">list</td></tr></tbody></table> <h6 id="chunkmetadata"><a href="#chunkmetadata" class="header-anchor">#</a> ChunkMetaData</h6> <table><thead><tr><th style="text-align:center;">Member Description</th> <th style="text-align:center;">Member Type</th></tr></thead> <tbody><tr><td style="text-align:center;">MeasurementId</td> <td style="text-align:center;">String</td></tr> <tr><td style="text-align:center;">ChunkHeader的起始偏移量</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">数据点数</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">开始时间</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">时间结束</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">数据类型</td> <td style="text-align:center;">short</td></tr> <tr><td style="text-align:center;">该块的统计信息</td> <td style="text-align:center;">TsDigest</td></tr></tbody></table> <h6 id="tsdigest"><a href="#tsdigest" class="header-anchor">#</a> TsDigest</h6> <p>现在有五个统计信息： <code>min_value, max_value, first_value, last_value, sum_value</code>.</p> <p>在v0.8.x中，统计信息的存储格式为<code>名称/值</code>对。 也就是说，<code>Map &lt;String，ByteBuffer&gt;statistics</code>。 名称是一个字符串（记住长度在文字之前）。 但是对于该值，还有一个整数byteLength用作后续值的自我描述长度，因为该值可能是各种类型。 例如，如果<code>min_value</code>是整数0，则它将作为[9“ min_value” 4 0]存储在TsFile中。</p> <p>下图显示了<code>TsDigest.deserializeFrom（buffer）</code>的示例。 在v0.8.0中，我们将获得</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>Map&lt;String, ByteBuffer&gt; statistics = {
    &quot;min_value&quot; -&gt; ByteBuffer of int value 0, 
    &quot;last&quot; -&gt; ByteBuffer of int value 19,
    &quot;sum&quot; -&gt; ByteBuffer of double value 1093347116,
    &quot;first&quot; -&gt; ByteBuffer of int value 0,
    &quot;max_value&quot; -&gt; ByteBuffer of int value 99
}
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><img src="https://user-images.githubusercontent.com/33376433/63765352-664a4280-c8fb-11e9-869e-859edf6d00bb.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"> <p>在v0.9.x中，为了节省空间和时间，将存储格式更改为数组。 即，ByteBuffer []统计信息。 遵循<code>StatisticType</code>中定义的顺序，数组的每个位置与特定类型的统计信息都有固定的关联：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>enum StatisticType {
    min_value, max_value, first_value, last_value, sum_value
}
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><p>因此，在上面的示例中，我们将获得</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>ByteBuffer[] statistics = [
    ByteBuffer of int value 0, // associated with &quot;min_value&quot;
    ByteBuffer of int value 99, // associated with &quot;max_value&quot;
    ByteBuffer of int value 0, // associated with &quot;first_value&quot;
    ByteBuffer of int value 19, // associated with &quot;last_value&quot;
    ByteBuffer of double value 1093347116 // associated with &quot;sum_value&quot;
]
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><p>作为v0.9.x中的另一个示例，当从缓冲区[3，0,4,0，1,4,99，3,4,19]反序列化TsDigest时，我们得到</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>ByteBuffer[] statistics = [
    ByteBuffer of int value 0, // associated with &quot;min_value&quot;
    ByteBuffer of int value 99, // associated with &quot;max_value&quot;
    null, // associated with &quot;first_value&quot;
    ByteBuffer of int value 19, // associated with &quot;last_value&quot;
    null // associated with &quot;sum_value&quot;
]
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><h5 id="_1-2-3-2-tsfilemetadata"><a href="#_1-2-3-2-tsfilemetadata" class="header-anchor">#</a> 1.2.3.2 TsFileMetaData</h5> <p>在<code>TsDeviceMetadatas</code>之后是<code>TsFileMetaData</code>。</p> <table><thead><tr><th style="text-align:center;">Member Description</th> <th style="text-align:center;">Member Type</th></tr></thead> <tbody><tr><td style="text-align:center;">Number of devices</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">Pairs of device name and deviceMetadataIndex</td> <td style="text-align:center;">String, TsDeviceMetadataIndex pair</td></tr> <tr><td style="text-align:center;">Number of measurements</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">Pairs of measurement name and schema</td> <td style="text-align:center;">String, MeasurementSchema pair</td></tr> <tr><td style="text-align:center;">Author byte</td> <td style="text-align:center;">byte</td></tr> <tr><td style="text-align:center;">Author(if author byte is 0x01)</td> <td style="text-align:center;">String</td></tr> <tr><td style="text-align:center;">totalChunkNum</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">invalidChunkNum</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">Bloom filter size</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">Bloom filter bit vector</td> <td style="text-align:center;">byte[Bloom filter size]</td></tr> <tr><td style="text-align:center;">Bloom filter capacity</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">Bloom filter hash functions size</td> <td style="text-align:center;">int</td></tr></tbody></table> <h6 id="tsdevicemetadataindex"><a href="#tsdevicemetadataindex" class="header-anchor">#</a> TsDeviceMetadataIndex</h6> <table><thead><tr><th style="text-align:center;">Member Description</th> <th style="text-align:center;">Member Type</th></tr></thead> <tbody><tr><td style="text-align:center;">DeviceId</td> <td style="text-align:center;">String</td></tr> <tr><td style="text-align:center;">Start offset of TsDeviceMetaData</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">length</td> <td style="text-align:center;">int</td></tr> <tr><td style="text-align:center;">Start time</td> <td style="text-align:center;">long</td></tr> <tr><td style="text-align:center;">End time</td> <td style="text-align:center;">long</td></tr></tbody></table> <h6 id="measurementschema"><a href="#measurementschema" class="header-anchor">#</a> MeasurementSchema</h6> <table><thead><tr><th style="text-align:center;">Member Description</th> <th style="text-align:center;">Member Type</th></tr></thead> <tbody><tr><td style="text-align:center;">MeasurementId</td> <td style="text-align:center;">String</td></tr> <tr><td style="text-align:center;">Data type</td> <td style="text-align:center;">short</td></tr> <tr><td style="text-align:center;">Encoding</td> <td style="text-align:center;">short</td></tr> <tr><td style="text-align:center;">Compressor</td> <td style="text-align:center;">short</td></tr> <tr><td style="text-align:center;">Size of props</td> <td style="text-align:center;">int</td></tr></tbody></table> <p>如果道具的大小大于0，则存在一个&lt;String，String&gt;对数组，作为此度量的属性。
​    例如“ max_point_number”“ 2”。</p> <h5 id="_1-2-3-3-tsfilemetadatasize"><a href="#_1-2-3-3-tsfilemetadatasize" class="header-anchor">#</a> 1.2.3.3 TsFileMetadataSize</h5> <p>在<code>TsFileMetaData</code>之后，有一个整数，指示<code>TsFileMetaData</code>的大小。</p> <h4 id="_1-2-4-魔术字符串"><a href="#_1-2-4-魔术字符串" class="header-anchor">#</a> 1.2.4 魔术字符串</h4> <p>Ts文件以6字节的魔术字符串结尾（至文件）。 恭喜你！ 您已经完成了发现TsFile的旅程。</p> <h3 id="_1-3-tool-set"><a href="#_1-3-tool-set" class="header-anchor">#</a> 1.3 Tool Set</h3> <h4 id="_1-3-1-tsfileresource打印工具"><a href="#_1-3-1-tsfileresource打印工具" class="header-anchor">#</a> 1.3.1 TsFileResource打印工具</h4> <p>构建服务器后，此工具的启动脚本将出现在<code>server \ target \ iotdb-server-0.9.3 \ tools</code>目录下。</p> <p>命令:</p> <p>对于Windows：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>.\print-tsfile-sketch.bat &lt;path of your TsFileResource Directory&gt;
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>对于Linux或Mac OS：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>./print-tsfile-sketch.sh &lt;path of your TsFileResource Directory&gt;
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>Windows上的示例：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>D:\incubator-iotdb\server\target\iotdb-server-0.9.3\tools&gt;.\print-tsfile-resource-files.bat D:\data\data\sequence\root.vehicle
​````````````````````````
Starting Printing the TsFileResources
​````````````````````````
12:31:59.861 [main] WARN org.apache.iotdb.db.conf.IoTDBDescriptor - Cannot find IOTDB_HOME or IOTDB_CONF environment variable when loading config file iotdb-engine.properties, use default configuration
analyzing D:\data\data\sequence\root.vehicle\1572496142067-101-0.tsfile ...
device root.vehicle.d0, start time 3000 (1970-01-01T08:00:03+08:00[GMT+08:00]), end time 100999 (1970-01-01T08:01:40.999+08:00[GMT+08:00])
analyzing the resource file finished.
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br></div></div><h4 id="_1-3-2-tsfile素描工具"><a href="#_1-3-2-tsfile素描工具" class="header-anchor">#</a> 1.3.2 TsFile素描工具</h4> <p>构建服务器后，此工具的启动脚本将出现在<code>server \ target \ iotdb-server-0.9.3 \ tools</code>目录下。</p> <p>命令：</p> <p>对于Windows：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>.\print-tsfile-sketch.bat &lt;path of your TsFile&gt; (&lt;path of the file for saving the output result&gt;) 
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><ul><li>请注意，如果未设置 <code>&lt;path of the file for saving the output result&gt;</code>，则将使用默认路径&quot;TsFile_sketch_view.txt&quot;。</li></ul> <p>对于Linux或Mac OS：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>./print-tsfile-sketch.sh &lt;path of your TsFile&gt; (&lt;path of the file for saving the output result&gt;) 
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><ul><li>请注意，如果未设置 <code>&lt;path of the file for saving the output result&gt;</code> , 则将使用默认路径&quot;TsFile_sketch_view.txt&quot;。</li></ul> <p>Windows上的示例：</p> <div class="language-$xslt line-numbers-mode"><pre class="language-text"><code>D:\incubator-iotdb\server\target\iotdb-server-0.9.3\tools&gt;.\print-tsfile-sketch.bat D:\data\data\sequence\root.vehicle\1572496142067-101-0.tsfile
​````````````````````````
Starting Printing the TsFile Sketch
​````````````````````````
TsFile path:D:\data\data\sequence\root.vehicle\1572496142067-101-0.tsfile
Sketch save path:TsFile_sketch_view.txt
-------------------------------- TsFile Sketch --------------------------------
file path: D:\data\data\sequence\root.vehicle\1572496142067-101-0.tsfile
file length: 187382

            POSITION|   CONTENT
            --------    -------
                   0|   [magic head] TsFile
                   6|   [version number] 000001
|||||||||||||||||||||   [Chunk Group] of root.vehicle.d0 begins at pos 12, ends at pos 186469, version:102, num of Chunks:6
                  12|   [Chunk] of s3, numOfPoints:10600, time range:[3000,13599], tsDataType:TEXT,
                        TsDigest:[min_value:A,max_value:E,first_value:A,last_value:E,sum_value:0.0]
                    |           [marker] 1
                    |           [ChunkHeader]
                    |           11 pages
               55718|   [Chunk] of s4, numOfPoints:10600, time range:[3000,13599], tsDataType:BOOLEAN,
                        TsDigest:[min_value:false,max_value:true,first_value:true,last_value:false,sum_value:0.0]
                    |           [marker] 1
                    |           [ChunkHeader]
                    |           11 pages
               68848|   [Chunk] of s5, numOfPoints:10600, time range:[3000,13599], tsDataType:DOUBLE,
                        TsDigest:[min_value:3000.0,max_value:13599.0,first_value:3000.0,last_value:13599.0,sum_value:8.79747E7]
                    |           [marker] 1
                    |           [ChunkHeader]
                    |           11 pages
               98474|   [Chunk] of s0, numOfPoints:21900, time range:[3000,100999], tsDataType:INT32,
                        TsDigest:[min_value:0,max_value:99,first_value:0,last_value:19,sum_value:889750.0]
                    |           [marker] 1
                    |           [ChunkHeader]
                    |           22 pages
              123369|   [Chunk] of s1, numOfPoints:21900, time range:[3000,100999], tsDataType:INT64,
                        TsDigest:[min_value:0,max_value:39,first_value:8,last_value:19,sum_value:300386.0]
                    |           [marker] 1
                    |           [ChunkHeader]
                    |           22 pages
              144741|   [Chunk] of s2, numOfPoints:21900, time range:[3000,100999], tsDataType:FLOAT,
                        TsDigest:[min_value:0.0,max_value:122.0,first_value:8.0,last_value:52.0,sum_value:778581.0]
                    |           [marker] 1
                    |           [ChunkHeader]
                    |           22 pages
              186437|   [Chunk Group Footer]
                    |           [marker] 0
                    |           [deviceID] root.vehicle.d0
                    |           [dataSize] 186425
                    |           [num of chunks] 6
|||||||||||||||||||||   [Chunk Group] of root.vehicle.d0 ends
              186469|   [marker] 2
              186470|   [TsDeviceMetadata] of root.vehicle.d0, startTime:3000, endTime:100999
                    |           [startTime] 3000tfi
                    |           [endTime] 100999
                    |           [num of ChunkGroupMetaData] 1
                    |           1 ChunkGroupMetaData
              187133|   [TsFileMetaData]
                    |           [num of devices] 1
                    |           1 key&amp;TsDeviceMetadataIndex
                    |           [num of measurements] 6
                    |           6 key&amp;measurementSchema
                    |           [createBy isNotNull] false
                    |           [totalChunkNum] 6
                    |           [invalidChunkNum] 0
                    |           [bloom filter bit vector byte array length] 31
                    |           [bloom filter bit vector byte array]
                    |           [bloom filter number of bits] 256
                    |           [bloom filter number of hash functions] 5
              187372|   [TsFileMetaDataSize] 239
              187376|   [magic tail] TsFile
              187382|   END of TsFile

---------------------------------- TsFile Sketch End ----------------------------------
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br><span class="line-number">31</span><br><span class="line-number">32</span><br><span class="line-number">33</span><br><span class="line-number">34</span><br><span class="line-number">35</span><br><span class="line-number">36</span><br><span class="line-number">37</span><br><span class="line-number">38</span><br><span class="line-number">39</span><br><span class="line-number">40</span><br><span class="line-number">41</span><br><span class="line-number">42</span><br><span class="line-number">43</span><br><span class="line-number">44</span><br><span class="line-number">45</span><br><span class="line-number">46</span><br><span class="line-number">47</span><br><span class="line-number">48</span><br><span class="line-number">49</span><br><span class="line-number">50</span><br><span class="line-number">51</span><br><span class="line-number">52</span><br><span class="line-number">53</span><br><span class="line-number">54</span><br><span class="line-number">55</span><br><span class="line-number">56</span><br><span class="line-number">57</span><br><span class="line-number">58</span><br><span class="line-number">59</span><br><span class="line-number">60</span><br><span class="line-number">61</span><br><span class="line-number">62</span><br><span class="line-number">63</span><br><span class="line-number">64</span><br><span class="line-number">65</span><br><span class="line-number">66</span><br><span class="line-number">67</span><br><span class="line-number">68</span><br><span class="line-number">69</span><br><span class="line-number">70</span><br><span class="line-number">71</span><br><span class="line-number">72</span><br><span class="line-number">73</span><br><span class="line-number">74</span><br></div></div><h4 id="_1-3-3-tsfilesequenceread"><a href="#_1-3-3-tsfilesequenceread" class="header-anchor">#</a> 1.3.3 TsFileSequenceRead</h4> <p>您也可以使用<code>example / tsfile / org / apache / iotdb / tsfile / TsFileSequenceRead</code>顺序打印TsFile的内容。</p> <h3 id="_1-4-tsfile可视化示例"><a href="#_1-4-tsfile可视化示例" class="header-anchor">#</a> 1.4 TsFile可视化示例</h3> <h4 id="v0-8-x"><a href="#v0-8-x" class="header-anchor">#</a> v0.8.x</h4> <img src="https://user-images.githubusercontent.com/33376433/65209576-2bd36000-dacb-11e9-9e43-49e0dd01274e.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"> <h4 id="v0-9-x"><a href="#v0-9-x" class="header-anchor">#</a> v0.9.x</h4> <img src="https://user-images.githubusercontent.com/33376433/68128717-35b60300-ff53-11e9-919e-48d80536df88.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"></div> <div class="page-nav"><p class="inner"><span class="prev">
        ←
        <a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/5-Hive TsFile.html" class="prev">
          Hive TsFile
        </a></span> <span class="next"><a href="/zh/UserGuide/V0.9.x/8-System Design/2-Files.html">
          文件
        </a>
        →
      </span></p></div> <p style="text-align: center;">Copyright © 2021 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: #444">
    Contact us: Join QQ Group 659990460 | Add friend <i>tietouqiao</i> and be invited to Wechat Group<br>
    see <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> for more</p></main></div><div class="global-ui"></div></div>
    <script src="/assets/js/app.9c03bb74.js" defer></script><script src="/assets/js/3.e95317f3.js" defer></script><script src="/assets/js/529.7f05b847.js" defer></script>
  </body>
</html>