<!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.f7fca28c.css" as="style"><link rel="preload" href="/assets/js/app.cd07c2fa.js" as="script"><link rel="preload" href="/assets/js/3.2a42f5e4.js" as="script"><link rel="preload" href="/assets/js/643.178e53f8.js" as="script"><link rel="prefetch" href="/assets/js/10.61872ae5.js"><link rel="prefetch" href="/assets/js/100.47b29810.js"><link rel="prefetch" href="/assets/js/101.be3f8e41.js"><link rel="prefetch" href="/assets/js/102.ab8764b7.js"><link rel="prefetch" href="/assets/js/103.4c142690.js"><link rel="prefetch" href="/assets/js/104.6042a8b3.js"><link rel="prefetch" href="/assets/js/105.f7c9efe5.js"><link rel="prefetch" href="/assets/js/106.2ba6adb1.js"><link rel="prefetch" href="/assets/js/107.5232a7c3.js"><link rel="prefetch" href="/assets/js/108.ccb521e0.js"><link rel="prefetch" href="/assets/js/109.c6797225.js"><link rel="prefetch" href="/assets/js/11.a080efae.js"><link rel="prefetch" href="/assets/js/110.2c0a21ac.js"><link rel="prefetch" href="/assets/js/111.64f69be0.js"><link rel="prefetch" href="/assets/js/112.3517c2ff.js"><link rel="prefetch" href="/assets/js/113.4b4bb4be.js"><link rel="prefetch" href="/assets/js/114.36c2b5e4.js"><link rel="prefetch" href="/assets/js/115.9447789e.js"><link rel="prefetch" href="/assets/js/116.870509a9.js"><link rel="prefetch" href="/assets/js/117.f1572c4d.js"><link rel="prefetch" href="/assets/js/118.1b482479.js"><link rel="prefetch" href="/assets/js/119.994db15b.js"><link rel="prefetch" href="/assets/js/12.4c48405a.js"><link rel="prefetch" href="/assets/js/120.b39ca53e.js"><link rel="prefetch" href="/assets/js/121.ac3af24a.js"><link rel="prefetch" href="/assets/js/122.d17d7d81.js"><link rel="prefetch" href="/assets/js/123.4aa29866.js"><link rel="prefetch" href="/assets/js/124.ee85ddde.js"><link rel="prefetch" href="/assets/js/125.118d7f8b.js"><link rel="prefetch" href="/assets/js/126.9c2f8dc7.js"><link rel="prefetch" href="/assets/js/127.5fa0f28c.js"><link rel="prefetch" href="/assets/js/128.bf1e94f3.js"><link rel="prefetch" href="/assets/js/129.4479fadb.js"><link rel="prefetch" href="/assets/js/13.16ded47d.js"><link rel="prefetch" href="/assets/js/130.59874ca0.js"><link rel="prefetch" href="/assets/js/131.f9d5e913.js"><link rel="prefetch" href="/assets/js/132.df382fa4.js"><link rel="prefetch" href="/assets/js/133.2605b87b.js"><link rel="prefetch" href="/assets/js/134.7f44a201.js"><link rel="prefetch" href="/assets/js/135.f867beb1.js"><link rel="prefetch" href="/assets/js/136.32dc30f5.js"><link rel="prefetch" href="/assets/js/137.a0b9469d.js"><link rel="prefetch" href="/assets/js/138.0d77670b.js"><link rel="prefetch" href="/assets/js/139.a4687aa3.js"><link rel="prefetch" href="/assets/js/14.81c4b95d.js"><link rel="prefetch" href="/assets/js/140.1c3b9c8e.js"><link rel="prefetch" href="/assets/js/141.ced0e8b4.js"><link rel="prefetch" href="/assets/js/142.0f0eab1f.js"><link rel="prefetch" href="/assets/js/143.b1cbf905.js"><link rel="prefetch" href="/assets/js/144.c8f1a948.js"><link rel="prefetch" href="/assets/js/145.20508b5b.js"><link rel="prefetch" href="/assets/js/146.d6f1ef22.js"><link rel="prefetch" href="/assets/js/147.d3ae33f7.js"><link rel="prefetch" href="/assets/js/148.fbd3c4b0.js"><link rel="prefetch" href="/assets/js/149.68309cce.js"><link rel="prefetch" href="/assets/js/15.bf1d2930.js"><link rel="prefetch" href="/assets/js/150.9bf1f73d.js"><link rel="prefetch" href="/assets/js/151.c102d923.js"><link rel="prefetch" href="/assets/js/152.e1bd669b.js"><link rel="prefetch" href="/assets/js/153.74bb0871.js"><link rel="prefetch" href="/assets/js/154.5930e226.js"><link rel="prefetch" href="/assets/js/155.d1c42f9d.js"><link rel="prefetch" href="/assets/js/156.38141ca2.js"><link rel="prefetch" href="/assets/js/157.d0fa5d7e.js"><link rel="prefetch" href="/assets/js/158.b424c315.js"><link rel="prefetch" href="/assets/js/159.5dcc300f.js"><link rel="prefetch" href="/assets/js/16.d2fb5036.js"><link rel="prefetch" href="/assets/js/160.0163ee71.js"><link rel="prefetch" href="/assets/js/161.ea35ffd3.js"><link rel="prefetch" href="/assets/js/162.ffc62b9b.js"><link rel="prefetch" href="/assets/js/163.63e5a86d.js"><link rel="prefetch" href="/assets/js/164.fc84bb91.js"><link rel="prefetch" href="/assets/js/165.6c824b8c.js"><link rel="prefetch" href="/assets/js/166.397b3e8c.js"><link rel="prefetch" href="/assets/js/167.05e14a7b.js"><link rel="prefetch" href="/assets/js/168.bfae89ef.js"><link rel="prefetch" href="/assets/js/169.2cbaff61.js"><link rel="prefetch" href="/assets/js/17.efe29df6.js"><link rel="prefetch" href="/assets/js/170.f26474b0.js"><link rel="prefetch" href="/assets/js/171.ba1d2df7.js"><link rel="prefetch" href="/assets/js/172.8a7cd300.js"><link rel="prefetch" href="/assets/js/173.4d45b322.js"><link rel="prefetch" href="/assets/js/174.f8eebecd.js"><link rel="prefetch" href="/assets/js/175.6a08a28f.js"><link rel="prefetch" href="/assets/js/176.f83d84c6.js"><link rel="prefetch" href="/assets/js/177.ace4f921.js"><link rel="prefetch" href="/assets/js/178.044fc356.js"><link rel="prefetch" href="/assets/js/179.04f818ee.js"><link rel="prefetch" href="/assets/js/18.ec2f64fe.js"><link rel="prefetch" href="/assets/js/180.50b6e9ae.js"><link rel="prefetch" href="/assets/js/181.38262468.js"><link rel="prefetch" href="/assets/js/182.6e5cc145.js"><link rel="prefetch" href="/assets/js/183.b90f3741.js"><link rel="prefetch" href="/assets/js/184.d8c296fd.js"><link rel="prefetch" href="/assets/js/185.f76280e7.js"><link rel="prefetch" href="/assets/js/186.0c977b03.js"><link rel="prefetch" href="/assets/js/187.26834b77.js"><link rel="prefetch" href="/assets/js/188.914d4380.js"><link rel="prefetch" href="/assets/js/189.28897e83.js"><link rel="prefetch" href="/assets/js/19.e46591ce.js"><link rel="prefetch" href="/assets/js/190.4531db7b.js"><link rel="prefetch" href="/assets/js/191.487b3857.js"><link rel="prefetch" href="/assets/js/192.1f3b6ca8.js"><link rel="prefetch" href="/assets/js/193.a4ebe434.js"><link rel="prefetch" href="/assets/js/194.80d52b93.js"><link rel="prefetch" href="/assets/js/195.3403576e.js"><link rel="prefetch" href="/assets/js/196.05c80d9a.js"><link rel="prefetch" href="/assets/js/197.64dbc6f3.js"><link rel="prefetch" href="/assets/js/198.7a43449a.js"><link rel="prefetch" href="/assets/js/199.4667308c.js"><link rel="prefetch" href="/assets/js/20.335cca54.js"><link rel="prefetch" href="/assets/js/200.6359ec70.js"><link rel="prefetch" href="/assets/js/201.7b157ca9.js"><link rel="prefetch" href="/assets/js/202.97011f10.js"><link rel="prefetch" href="/assets/js/203.e8e6e386.js"><link rel="prefetch" href="/assets/js/204.f9f53b05.js"><link rel="prefetch" href="/assets/js/205.a14130fa.js"><link rel="prefetch" href="/assets/js/206.571a8dbc.js"><link rel="prefetch" href="/assets/js/207.cd154c33.js"><link rel="prefetch" href="/assets/js/208.ec1e91a0.js"><link rel="prefetch" href="/assets/js/209.894ab478.js"><link rel="prefetch" href="/assets/js/21.8c3060b4.js"><link rel="prefetch" href="/assets/js/210.b47e7f1b.js"><link rel="prefetch" href="/assets/js/211.1182daf0.js"><link rel="prefetch" href="/assets/js/212.88cfd73c.js"><link rel="prefetch" href="/assets/js/213.b6784836.js"><link rel="prefetch" href="/assets/js/214.0a76e43e.js"><link rel="prefetch" href="/assets/js/215.31c34e00.js"><link rel="prefetch" href="/assets/js/216.c31c58b1.js"><link rel="prefetch" href="/assets/js/217.e56bd014.js"><link rel="prefetch" href="/assets/js/218.6a193a9b.js"><link rel="prefetch" href="/assets/js/219.c1702bf7.js"><link rel="prefetch" href="/assets/js/22.d30695a0.js"><link rel="prefetch" href="/assets/js/220.e4c8344e.js"><link rel="prefetch" href="/assets/js/221.6c4ef709.js"><link rel="prefetch" href="/assets/js/222.3e573e59.js"><link rel="prefetch" href="/assets/js/223.28393c51.js"><link rel="prefetch" href="/assets/js/224.8872f291.js"><link rel="prefetch" href="/assets/js/225.3d5bcb45.js"><link rel="prefetch" href="/assets/js/226.4b68a654.js"><link rel="prefetch" href="/assets/js/227.a0832c76.js"><link rel="prefetch" href="/assets/js/228.4834ee2a.js"><link rel="prefetch" href="/assets/js/229.0f86fa39.js"><link rel="prefetch" href="/assets/js/23.c21377c0.js"><link rel="prefetch" href="/assets/js/230.6dee403e.js"><link rel="prefetch" href="/assets/js/231.db4b00e9.js"><link rel="prefetch" href="/assets/js/232.46dde63d.js"><link rel="prefetch" href="/assets/js/233.3f928465.js"><link rel="prefetch" href="/assets/js/234.e451ab40.js"><link rel="prefetch" href="/assets/js/235.b83ef0bb.js"><link rel="prefetch" href="/assets/js/236.b647c8c6.js"><link rel="prefetch" href="/assets/js/237.7cbda94b.js"><link rel="prefetch" href="/assets/js/238.f4d80418.js"><link rel="prefetch" href="/assets/js/239.16e9e1fe.js"><link rel="prefetch" href="/assets/js/24.4a86b358.js"><link rel="prefetch" href="/assets/js/240.c85b394f.js"><link rel="prefetch" href="/assets/js/241.1f972f6c.js"><link rel="prefetch" href="/assets/js/242.90755a70.js"><link rel="prefetch" href="/assets/js/243.88b5d9c1.js"><link rel="prefetch" href="/assets/js/244.024e03e6.js"><link rel="prefetch" href="/assets/js/245.df7f3f34.js"><link rel="prefetch" href="/assets/js/246.013095a6.js"><link rel="prefetch" href="/assets/js/247.d09b8d82.js"><link rel="prefetch" href="/assets/js/248.41e0e656.js"><link rel="prefetch" href="/assets/js/249.5fbc353a.js"><link rel="prefetch" href="/assets/js/25.f8281c6e.js"><link rel="prefetch" href="/assets/js/250.0d3aaf39.js"><link rel="prefetch" href="/assets/js/251.0ae7ee46.js"><link rel="prefetch" href="/assets/js/252.d7ea910f.js"><link rel="prefetch" href="/assets/js/253.eb1f2101.js"><link rel="prefetch" href="/assets/js/254.f1632866.js"><link rel="prefetch" href="/assets/js/255.e0cc85d5.js"><link rel="prefetch" href="/assets/js/256.fd4c8b20.js"><link rel="prefetch" href="/assets/js/257.c5d7228d.js"><link rel="prefetch" href="/assets/js/258.f4ff7bfb.js"><link rel="prefetch" href="/assets/js/259.4429563b.js"><link rel="prefetch" href="/assets/js/26.108ee393.js"><link rel="prefetch" href="/assets/js/260.7c2580dd.js"><link rel="prefetch" href="/assets/js/261.b2b00e2e.js"><link rel="prefetch" href="/assets/js/262.ab88ace1.js"><link rel="prefetch" href="/assets/js/263.5f56c054.js"><link rel="prefetch" href="/assets/js/264.2b3be37f.js"><link rel="prefetch" href="/assets/js/265.5c5138c3.js"><link rel="prefetch" href="/assets/js/266.19b07017.js"><link rel="prefetch" href="/assets/js/267.c04bae9d.js"><link rel="prefetch" href="/assets/js/268.1c185126.js"><link rel="prefetch" href="/assets/js/269.9b00598c.js"><link rel="prefetch" href="/assets/js/27.ce2cad14.js"><link rel="prefetch" href="/assets/js/270.79253900.js"><link rel="prefetch" href="/assets/js/271.b2afe860.js"><link rel="prefetch" href="/assets/js/272.db8943f8.js"><link rel="prefetch" href="/assets/js/273.7e70e5b7.js"><link rel="prefetch" href="/assets/js/274.1b5f0c99.js"><link rel="prefetch" href="/assets/js/275.36a23724.js"><link rel="prefetch" href="/assets/js/276.9d87c99a.js"><link rel="prefetch" href="/assets/js/277.73c7fb5f.js"><link rel="prefetch" href="/assets/js/278.72590c19.js"><link rel="prefetch" href="/assets/js/279.6bba344e.js"><link rel="prefetch" href="/assets/js/28.196d9118.js"><link rel="prefetch" href="/assets/js/280.532a4551.js"><link rel="prefetch" href="/assets/js/281.47678c07.js"><link rel="prefetch" href="/assets/js/282.3d676bf0.js"><link rel="prefetch" href="/assets/js/283.8f2b46c3.js"><link rel="prefetch" href="/assets/js/284.6af96cb2.js"><link rel="prefetch" href="/assets/js/285.0a94ea52.js"><link rel="prefetch" href="/assets/js/286.66b3b404.js"><link rel="prefetch" href="/assets/js/287.e8e44717.js"><link rel="prefetch" href="/assets/js/288.c4c894b9.js"><link rel="prefetch" href="/assets/js/289.368cc017.js"><link rel="prefetch" href="/assets/js/29.35566993.js"><link rel="prefetch" href="/assets/js/290.ad040397.js"><link rel="prefetch" href="/assets/js/291.38908283.js"><link rel="prefetch" href="/assets/js/292.9d78c2c3.js"><link rel="prefetch" href="/assets/js/293.276dabda.js"><link rel="prefetch" href="/assets/js/294.14a7328e.js"><link rel="prefetch" href="/assets/js/295.022ce890.js"><link rel="prefetch" href="/assets/js/296.82da5f05.js"><link rel="prefetch" href="/assets/js/297.713c3b6e.js"><link rel="prefetch" href="/assets/js/298.051c397a.js"><link rel="prefetch" href="/assets/js/299.8cb2261f.js"><link rel="prefetch" href="/assets/js/30.2a46f39a.js"><link rel="prefetch" href="/assets/js/300.1edad926.js"><link rel="prefetch" href="/assets/js/301.9e8d9afc.js"><link rel="prefetch" href="/assets/js/302.64b08bcb.js"><link rel="prefetch" href="/assets/js/303.5142e505.js"><link rel="prefetch" href="/assets/js/304.326eed21.js"><link rel="prefetch" href="/assets/js/305.0aa215ce.js"><link rel="prefetch" href="/assets/js/306.857aae36.js"><link rel="prefetch" href="/assets/js/307.2fbda374.js"><link rel="prefetch" href="/assets/js/308.eb2b9bc2.js"><link rel="prefetch" href="/assets/js/309.dd7656fb.js"><link rel="prefetch" href="/assets/js/31.fab44020.js"><link rel="prefetch" href="/assets/js/310.1c1e4a93.js"><link rel="prefetch" href="/assets/js/311.05dd6d98.js"><link rel="prefetch" href="/assets/js/312.479348b4.js"><link rel="prefetch" href="/assets/js/313.665e106f.js"><link rel="prefetch" href="/assets/js/314.36b48a81.js"><link rel="prefetch" href="/assets/js/315.f2e0ffc6.js"><link rel="prefetch" href="/assets/js/316.31b4508b.js"><link rel="prefetch" href="/assets/js/317.9d5d4b6d.js"><link rel="prefetch" href="/assets/js/318.3362bfb2.js"><link rel="prefetch" href="/assets/js/319.a94279d5.js"><link rel="prefetch" href="/assets/js/32.8f287f6a.js"><link rel="prefetch" href="/assets/js/320.575c962a.js"><link rel="prefetch" href="/assets/js/321.e3971e75.js"><link rel="prefetch" href="/assets/js/322.46a74f5d.js"><link rel="prefetch" href="/assets/js/323.0ffeaf3b.js"><link rel="prefetch" href="/assets/js/324.7b5b9e9b.js"><link rel="prefetch" href="/assets/js/325.90e02cd4.js"><link rel="prefetch" href="/assets/js/326.00105535.js"><link rel="prefetch" href="/assets/js/327.4f0759d6.js"><link rel="prefetch" href="/assets/js/328.e458a662.js"><link rel="prefetch" href="/assets/js/329.fcf02a87.js"><link rel="prefetch" href="/assets/js/33.5af74851.js"><link rel="prefetch" href="/assets/js/330.ee20bd02.js"><link rel="prefetch" href="/assets/js/331.2fa6fbda.js"><link rel="prefetch" href="/assets/js/332.7feb498b.js"><link rel="prefetch" href="/assets/js/333.385ba052.js"><link rel="prefetch" href="/assets/js/334.cced60ec.js"><link rel="prefetch" href="/assets/js/335.616cbee6.js"><link rel="prefetch" href="/assets/js/336.ca5b5572.js"><link rel="prefetch" href="/assets/js/337.0c8ef97c.js"><link rel="prefetch" href="/assets/js/338.8a9a7a9e.js"><link rel="prefetch" href="/assets/js/339.a1accaad.js"><link rel="prefetch" href="/assets/js/34.5dfe1291.js"><link rel="prefetch" href="/assets/js/340.2d3d2ae5.js"><link rel="prefetch" href="/assets/js/341.0669ee46.js"><link rel="prefetch" href="/assets/js/342.f04286cc.js"><link rel="prefetch" href="/assets/js/343.10f0d15c.js"><link rel="prefetch" href="/assets/js/344.fc30101e.js"><link rel="prefetch" href="/assets/js/345.db8c549d.js"><link rel="prefetch" href="/assets/js/346.4e5b736e.js"><link rel="prefetch" href="/assets/js/347.30887da4.js"><link rel="prefetch" href="/assets/js/348.e89eebf8.js"><link rel="prefetch" href="/assets/js/349.ced465b2.js"><link rel="prefetch" href="/assets/js/35.0a7b7db7.js"><link rel="prefetch" href="/assets/js/350.54d82811.js"><link rel="prefetch" href="/assets/js/351.22c50fcc.js"><link rel="prefetch" href="/assets/js/352.9d30e57b.js"><link rel="prefetch" href="/assets/js/353.967b32bd.js"><link rel="prefetch" href="/assets/js/354.12fe5a6a.js"><link rel="prefetch" href="/assets/js/355.25ee5cda.js"><link rel="prefetch" href="/assets/js/356.01e8a40d.js"><link rel="prefetch" href="/assets/js/357.f8ae50b2.js"><link rel="prefetch" href="/assets/js/358.6f44cb1e.js"><link rel="prefetch" href="/assets/js/359.d2a8e208.js"><link rel="prefetch" href="/assets/js/36.8a8c44ca.js"><link rel="prefetch" href="/assets/js/360.1520ffcf.js"><link rel="prefetch" href="/assets/js/361.7c7f3d7b.js"><link rel="prefetch" href="/assets/js/362.3a08870e.js"><link rel="prefetch" href="/assets/js/363.f3e25c62.js"><link rel="prefetch" href="/assets/js/364.32b3c5a8.js"><link rel="prefetch" href="/assets/js/365.aeb08354.js"><link rel="prefetch" href="/assets/js/366.72517ac0.js"><link rel="prefetch" href="/assets/js/367.18b3b8f7.js"><link rel="prefetch" href="/assets/js/368.ec2a91f3.js"><link rel="prefetch" href="/assets/js/369.d6de0392.js"><link rel="prefetch" href="/assets/js/37.7ed1a8d1.js"><link rel="prefetch" href="/assets/js/370.ebfed179.js"><link rel="prefetch" href="/assets/js/371.5616eccf.js"><link rel="prefetch" href="/assets/js/372.a03558dc.js"><link rel="prefetch" href="/assets/js/373.5d45c61b.js"><link rel="prefetch" href="/assets/js/374.39b69121.js"><link rel="prefetch" href="/assets/js/375.7d7c64d7.js"><link rel="prefetch" href="/assets/js/376.7881cfc3.js"><link rel="prefetch" href="/assets/js/377.af9de350.js"><link rel="prefetch" href="/assets/js/378.1a1e8821.js"><link rel="prefetch" href="/assets/js/379.116b3170.js"><link rel="prefetch" href="/assets/js/38.8d2f9b02.js"><link rel="prefetch" href="/assets/js/380.370a093f.js"><link rel="prefetch" href="/assets/js/381.f37830ca.js"><link rel="prefetch" href="/assets/js/382.ab0212ff.js"><link rel="prefetch" href="/assets/js/383.25f8d756.js"><link rel="prefetch" href="/assets/js/384.97136bbd.js"><link rel="prefetch" href="/assets/js/385.498a0b96.js"><link rel="prefetch" href="/assets/js/386.3b60e408.js"><link rel="prefetch" href="/assets/js/387.9ba695cb.js"><link rel="prefetch" href="/assets/js/388.04a18c82.js"><link rel="prefetch" href="/assets/js/389.9ad76e17.js"><link rel="prefetch" href="/assets/js/39.977e55a2.js"><link rel="prefetch" href="/assets/js/390.914db4ab.js"><link rel="prefetch" href="/assets/js/391.f95a2c3c.js"><link rel="prefetch" href="/assets/js/392.c6e77723.js"><link rel="prefetch" href="/assets/js/393.0b442456.js"><link rel="prefetch" href="/assets/js/394.376eb224.js"><link rel="prefetch" href="/assets/js/395.f90c5b4c.js"><link rel="prefetch" href="/assets/js/396.50d8d5c4.js"><link rel="prefetch" href="/assets/js/397.6184ad09.js"><link rel="prefetch" href="/assets/js/398.965e0e4c.js"><link rel="prefetch" href="/assets/js/399.79ebc172.js"><link rel="prefetch" href="/assets/js/4.91d854a1.js"><link rel="prefetch" href="/assets/js/40.6f6fb483.js"><link rel="prefetch" href="/assets/js/400.34747ce2.js"><link rel="prefetch" href="/assets/js/401.c658fdf1.js"><link rel="prefetch" href="/assets/js/402.3e9a16e5.js"><link rel="prefetch" href="/assets/js/403.ba8ea8ab.js"><link rel="prefetch" href="/assets/js/404.906ae695.js"><link rel="prefetch" href="/assets/js/405.a071166e.js"><link rel="prefetch" href="/assets/js/406.ff33839d.js"><link rel="prefetch" href="/assets/js/407.865547ac.js"><link rel="prefetch" href="/assets/js/408.b6ab44a1.js"><link rel="prefetch" href="/assets/js/409.7d5b623b.js"><link rel="prefetch" href="/assets/js/41.f1dd1831.js"><link rel="prefetch" href="/assets/js/410.ecfdb8f1.js"><link rel="prefetch" href="/assets/js/411.bd2dbd0e.js"><link rel="prefetch" href="/assets/js/412.c66dd7de.js"><link rel="prefetch" href="/assets/js/413.dae89178.js"><link rel="prefetch" href="/assets/js/414.a440ee72.js"><link rel="prefetch" href="/assets/js/415.cc0002eb.js"><link rel="prefetch" href="/assets/js/416.3858a741.js"><link rel="prefetch" href="/assets/js/417.2166d5e6.js"><link rel="prefetch" href="/assets/js/418.88a5c742.js"><link rel="prefetch" href="/assets/js/419.ec38cce5.js"><link rel="prefetch" href="/assets/js/42.6727d6a6.js"><link rel="prefetch" href="/assets/js/420.baa3fb6b.js"><link rel="prefetch" href="/assets/js/421.b47f6537.js"><link rel="prefetch" href="/assets/js/422.8682c776.js"><link rel="prefetch" href="/assets/js/423.7090348c.js"><link rel="prefetch" href="/assets/js/424.5a36d297.js"><link rel="prefetch" href="/assets/js/425.d69cc603.js"><link rel="prefetch" href="/assets/js/426.0650311e.js"><link rel="prefetch" href="/assets/js/427.e532cec9.js"><link rel="prefetch" href="/assets/js/428.d7e5abc5.js"><link rel="prefetch" href="/assets/js/429.15e50e04.js"><link rel="prefetch" href="/assets/js/43.6b1d84bc.js"><link rel="prefetch" href="/assets/js/430.8aef2b31.js"><link rel="prefetch" href="/assets/js/431.cd3c2525.js"><link rel="prefetch" href="/assets/js/432.9b56bf1b.js"><link rel="prefetch" href="/assets/js/433.82470875.js"><link rel="prefetch" href="/assets/js/434.175df5a2.js"><link rel="prefetch" href="/assets/js/435.ef84b041.js"><link rel="prefetch" href="/assets/js/436.275cc028.js"><link rel="prefetch" href="/assets/js/437.681033bd.js"><link rel="prefetch" href="/assets/js/438.8c26bd38.js"><link rel="prefetch" href="/assets/js/439.4326cfc7.js"><link rel="prefetch" href="/assets/js/44.7bf207c6.js"><link rel="prefetch" href="/assets/js/440.abad0c5e.js"><link rel="prefetch" href="/assets/js/441.cbda2cfa.js"><link rel="prefetch" href="/assets/js/442.e42f442c.js"><link rel="prefetch" href="/assets/js/443.1fe1d886.js"><link rel="prefetch" href="/assets/js/444.7c71aab4.js"><link rel="prefetch" href="/assets/js/445.291ae37c.js"><link rel="prefetch" href="/assets/js/446.6c9682e4.js"><link rel="prefetch" href="/assets/js/447.594935b8.js"><link rel="prefetch" href="/assets/js/448.dbb8091e.js"><link rel="prefetch" href="/assets/js/449.b217eb50.js"><link rel="prefetch" href="/assets/js/45.3161e71b.js"><link rel="prefetch" href="/assets/js/450.fa92501a.js"><link rel="prefetch" href="/assets/js/451.2d8b4eee.js"><link rel="prefetch" href="/assets/js/452.c98d7422.js"><link rel="prefetch" href="/assets/js/453.04694e2d.js"><link rel="prefetch" href="/assets/js/454.cec8a98b.js"><link rel="prefetch" href="/assets/js/455.579f855d.js"><link rel="prefetch" href="/assets/js/456.a7c30066.js"><link rel="prefetch" href="/assets/js/457.43ed31da.js"><link rel="prefetch" href="/assets/js/458.f794f0a1.js"><link rel="prefetch" href="/assets/js/459.68d942de.js"><link rel="prefetch" href="/assets/js/46.0681e191.js"><link rel="prefetch" href="/assets/js/460.83cbad4c.js"><link rel="prefetch" href="/assets/js/461.b9746da9.js"><link rel="prefetch" href="/assets/js/462.899c56a4.js"><link rel="prefetch" href="/assets/js/463.68dcef9a.js"><link rel="prefetch" href="/assets/js/464.6e2036cb.js"><link rel="prefetch" href="/assets/js/465.f8dcd141.js"><link rel="prefetch" href="/assets/js/466.f56b92ba.js"><link rel="prefetch" href="/assets/js/467.6cb0e836.js"><link rel="prefetch" href="/assets/js/468.54b36b5c.js"><link rel="prefetch" href="/assets/js/469.22584acc.js"><link rel="prefetch" href="/assets/js/47.ee804674.js"><link rel="prefetch" href="/assets/js/470.6b1341a6.js"><link rel="prefetch" href="/assets/js/471.f118f37c.js"><link rel="prefetch" href="/assets/js/472.c14c7cff.js"><link rel="prefetch" href="/assets/js/473.2eced5ff.js"><link rel="prefetch" href="/assets/js/474.e862dd2c.js"><link rel="prefetch" href="/assets/js/475.d20d7571.js"><link rel="prefetch" href="/assets/js/476.6d6eb5c1.js"><link rel="prefetch" href="/assets/js/477.462c863b.js"><link rel="prefetch" href="/assets/js/478.5966d63a.js"><link rel="prefetch" href="/assets/js/479.1d61143e.js"><link rel="prefetch" href="/assets/js/48.dd5f7791.js"><link rel="prefetch" href="/assets/js/480.5c7d31af.js"><link rel="prefetch" href="/assets/js/481.339bb6ba.js"><link rel="prefetch" href="/assets/js/482.6a49b82c.js"><link rel="prefetch" href="/assets/js/483.cafa61f9.js"><link rel="prefetch" href="/assets/js/484.7a0c6929.js"><link rel="prefetch" href="/assets/js/485.2738a461.js"><link rel="prefetch" href="/assets/js/486.d1d63c62.js"><link rel="prefetch" href="/assets/js/487.4fa0483e.js"><link rel="prefetch" href="/assets/js/488.f999466f.js"><link rel="prefetch" href="/assets/js/489.74a36cb0.js"><link rel="prefetch" href="/assets/js/49.a22d6593.js"><link rel="prefetch" href="/assets/js/490.99a914b7.js"><link rel="prefetch" href="/assets/js/491.ccc50bb1.js"><link rel="prefetch" href="/assets/js/492.d8b7440e.js"><link rel="prefetch" href="/assets/js/493.71668939.js"><link rel="prefetch" href="/assets/js/494.7a34704e.js"><link rel="prefetch" href="/assets/js/495.aff82e82.js"><link rel="prefetch" href="/assets/js/496.0a14cd27.js"><link rel="prefetch" href="/assets/js/497.f5238133.js"><link rel="prefetch" href="/assets/js/498.3af5de99.js"><link rel="prefetch" href="/assets/js/499.6b1c93c2.js"><link rel="prefetch" href="/assets/js/5.5a730a22.js"><link rel="prefetch" href="/assets/js/50.f860099b.js"><link rel="prefetch" href="/assets/js/500.7473b06d.js"><link rel="prefetch" href="/assets/js/501.c4bccddf.js"><link rel="prefetch" href="/assets/js/502.5b8c3f06.js"><link rel="prefetch" href="/assets/js/503.b8f7bf0d.js"><link rel="prefetch" href="/assets/js/504.696bf6d4.js"><link rel="prefetch" href="/assets/js/505.5088c7bd.js"><link rel="prefetch" href="/assets/js/506.16a8ac89.js"><link rel="prefetch" href="/assets/js/507.b5c982b2.js"><link rel="prefetch" href="/assets/js/508.b6c5d31f.js"><link rel="prefetch" href="/assets/js/509.2a5e0126.js"><link rel="prefetch" href="/assets/js/51.e25bd41b.js"><link rel="prefetch" href="/assets/js/510.1b65a001.js"><link rel="prefetch" href="/assets/js/511.5044385e.js"><link rel="prefetch" href="/assets/js/512.3c3fdeed.js"><link rel="prefetch" href="/assets/js/513.f17f3f85.js"><link rel="prefetch" href="/assets/js/514.e59ac7a8.js"><link rel="prefetch" href="/assets/js/515.29ec0271.js"><link rel="prefetch" href="/assets/js/516.560e42ba.js"><link rel="prefetch" href="/assets/js/517.538a1d17.js"><link rel="prefetch" href="/assets/js/518.056afb54.js"><link rel="prefetch" href="/assets/js/519.553a3c8e.js"><link rel="prefetch" href="/assets/js/52.b3ba6c43.js"><link rel="prefetch" href="/assets/js/520.cd11b0f8.js"><link rel="prefetch" href="/assets/js/521.255c38b2.js"><link rel="prefetch" href="/assets/js/522.dbe96b70.js"><link rel="prefetch" href="/assets/js/523.8e5b5e18.js"><link rel="prefetch" href="/assets/js/524.861f5e2c.js"><link rel="prefetch" href="/assets/js/525.7a628e20.js"><link rel="prefetch" href="/assets/js/526.0a240bb1.js"><link rel="prefetch" href="/assets/js/527.bc44252a.js"><link rel="prefetch" href="/assets/js/528.51a7cb30.js"><link rel="prefetch" href="/assets/js/529.e6762c93.js"><link rel="prefetch" href="/assets/js/53.a994810f.js"><link rel="prefetch" href="/assets/js/530.12121596.js"><link rel="prefetch" href="/assets/js/531.732ca969.js"><link rel="prefetch" href="/assets/js/532.c383afe0.js"><link rel="prefetch" href="/assets/js/533.27009326.js"><link rel="prefetch" href="/assets/js/534.8fd97962.js"><link rel="prefetch" href="/assets/js/535.c49833b4.js"><link rel="prefetch" href="/assets/js/536.34b112ad.js"><link rel="prefetch" href="/assets/js/537.a418aaf5.js"><link rel="prefetch" href="/assets/js/538.d1e977c1.js"><link rel="prefetch" href="/assets/js/539.3585b5c1.js"><link rel="prefetch" href="/assets/js/54.1ec48dc5.js"><link rel="prefetch" href="/assets/js/540.80fc4611.js"><link rel="prefetch" href="/assets/js/541.38caa7c0.js"><link rel="prefetch" href="/assets/js/542.a82d8253.js"><link rel="prefetch" href="/assets/js/543.8f099428.js"><link rel="prefetch" href="/assets/js/544.41ab9212.js"><link rel="prefetch" href="/assets/js/545.345ae885.js"><link rel="prefetch" href="/assets/js/546.5433479f.js"><link rel="prefetch" href="/assets/js/547.1c1c2f1f.js"><link rel="prefetch" href="/assets/js/548.48a49205.js"><link rel="prefetch" href="/assets/js/549.c555576e.js"><link rel="prefetch" href="/assets/js/55.ba5908aa.js"><link rel="prefetch" href="/assets/js/550.48fa63e2.js"><link rel="prefetch" href="/assets/js/551.95fc12ad.js"><link rel="prefetch" href="/assets/js/552.5f0a8a1a.js"><link rel="prefetch" href="/assets/js/553.ecc73e37.js"><link rel="prefetch" href="/assets/js/554.17b88955.js"><link rel="prefetch" href="/assets/js/555.04d2a121.js"><link rel="prefetch" href="/assets/js/556.546c8322.js"><link rel="prefetch" href="/assets/js/557.84464789.js"><link rel="prefetch" href="/assets/js/558.99c701bf.js"><link rel="prefetch" href="/assets/js/559.4b6e99c0.js"><link rel="prefetch" href="/assets/js/56.fcf66dfb.js"><link rel="prefetch" href="/assets/js/560.cf769a23.js"><link rel="prefetch" href="/assets/js/561.7cf13ba6.js"><link rel="prefetch" href="/assets/js/562.88f1ab27.js"><link rel="prefetch" href="/assets/js/563.f5f8aaf4.js"><link rel="prefetch" href="/assets/js/564.894fc9ba.js"><link rel="prefetch" href="/assets/js/565.749cb379.js"><link rel="prefetch" href="/assets/js/566.4d0c2085.js"><link rel="prefetch" href="/assets/js/567.9337af2a.js"><link rel="prefetch" href="/assets/js/568.067e7dd1.js"><link rel="prefetch" href="/assets/js/569.cf6824da.js"><link rel="prefetch" href="/assets/js/57.47a3d63c.js"><link rel="prefetch" href="/assets/js/570.4d8757e7.js"><link rel="prefetch" href="/assets/js/571.6ed8716a.js"><link rel="prefetch" href="/assets/js/572.1a0bd6f4.js"><link rel="prefetch" href="/assets/js/573.8a19ef48.js"><link rel="prefetch" href="/assets/js/574.014c619f.js"><link rel="prefetch" href="/assets/js/575.ca1221fb.js"><link rel="prefetch" href="/assets/js/576.e51950a4.js"><link rel="prefetch" href="/assets/js/577.577165ae.js"><link rel="prefetch" href="/assets/js/578.6ebef582.js"><link rel="prefetch" href="/assets/js/579.f41f98b0.js"><link rel="prefetch" href="/assets/js/58.e3e74c9a.js"><link rel="prefetch" href="/assets/js/580.1271db2e.js"><link rel="prefetch" href="/assets/js/581.efeef161.js"><link rel="prefetch" href="/assets/js/582.ca878c09.js"><link rel="prefetch" href="/assets/js/583.c41b6a33.js"><link rel="prefetch" href="/assets/js/584.59806fbd.js"><link rel="prefetch" href="/assets/js/585.05a422e8.js"><link rel="prefetch" href="/assets/js/586.d17af92c.js"><link rel="prefetch" href="/assets/js/587.038d345c.js"><link rel="prefetch" href="/assets/js/588.697644f8.js"><link rel="prefetch" href="/assets/js/589.6f03bb77.js"><link rel="prefetch" href="/assets/js/59.bc479ead.js"><link rel="prefetch" href="/assets/js/590.65ae38e8.js"><link rel="prefetch" href="/assets/js/591.13d806d8.js"><link rel="prefetch" href="/assets/js/592.4a380fde.js"><link rel="prefetch" href="/assets/js/593.95706dec.js"><link rel="prefetch" href="/assets/js/594.487a07ec.js"><link rel="prefetch" href="/assets/js/595.b09ebed5.js"><link rel="prefetch" href="/assets/js/596.9f3d4c37.js"><link rel="prefetch" href="/assets/js/597.24a28c60.js"><link rel="prefetch" href="/assets/js/598.dea2f060.js"><link rel="prefetch" href="/assets/js/599.881f3080.js"><link rel="prefetch" href="/assets/js/6.d05ff7d1.js"><link rel="prefetch" href="/assets/js/60.538f7a8f.js"><link rel="prefetch" href="/assets/js/600.a1df3d21.js"><link rel="prefetch" href="/assets/js/601.8f86ab54.js"><link rel="prefetch" href="/assets/js/602.cbb98cef.js"><link rel="prefetch" href="/assets/js/603.f69ad197.js"><link rel="prefetch" href="/assets/js/604.ed947213.js"><link rel="prefetch" href="/assets/js/605.5d4408fa.js"><link rel="prefetch" href="/assets/js/606.1303dab1.js"><link rel="prefetch" href="/assets/js/607.651c81d7.js"><link rel="prefetch" href="/assets/js/608.5f805112.js"><link rel="prefetch" href="/assets/js/609.c9a567f6.js"><link rel="prefetch" href="/assets/js/61.cc65190a.js"><link rel="prefetch" href="/assets/js/610.b2a8426e.js"><link rel="prefetch" href="/assets/js/611.722ff656.js"><link rel="prefetch" href="/assets/js/612.d876f095.js"><link rel="prefetch" href="/assets/js/613.a353bf79.js"><link rel="prefetch" href="/assets/js/614.fa0b03dc.js"><link rel="prefetch" href="/assets/js/615.44df5525.js"><link rel="prefetch" href="/assets/js/616.8bb42251.js"><link rel="prefetch" href="/assets/js/617.1550fe9f.js"><link rel="prefetch" href="/assets/js/618.1247b611.js"><link rel="prefetch" href="/assets/js/619.8809b2ae.js"><link rel="prefetch" href="/assets/js/62.4ae1f431.js"><link rel="prefetch" href="/assets/js/620.cc4a3af3.js"><link rel="prefetch" href="/assets/js/621.414d1d68.js"><link rel="prefetch" href="/assets/js/622.dbcbfb64.js"><link rel="prefetch" href="/assets/js/623.48dc89ee.js"><link rel="prefetch" href="/assets/js/624.25c47110.js"><link rel="prefetch" href="/assets/js/625.ce0558b1.js"><link rel="prefetch" href="/assets/js/626.96dd94a0.js"><link rel="prefetch" href="/assets/js/627.d3854e8d.js"><link rel="prefetch" href="/assets/js/628.a3a5e2db.js"><link rel="prefetch" href="/assets/js/629.d2f08abf.js"><link rel="prefetch" href="/assets/js/63.49f2bbdc.js"><link rel="prefetch" href="/assets/js/630.b5600d09.js"><link rel="prefetch" href="/assets/js/631.ff9db242.js"><link rel="prefetch" href="/assets/js/632.d1647587.js"><link rel="prefetch" href="/assets/js/633.cea277e2.js"><link rel="prefetch" href="/assets/js/634.122af75b.js"><link rel="prefetch" href="/assets/js/635.7bea6d49.js"><link rel="prefetch" href="/assets/js/636.2d71947d.js"><link rel="prefetch" href="/assets/js/637.95ea8ecc.js"><link rel="prefetch" href="/assets/js/638.1e88f87f.js"><link rel="prefetch" href="/assets/js/639.08a794e6.js"><link rel="prefetch" href="/assets/js/64.2ce1d588.js"><link rel="prefetch" href="/assets/js/640.83817a84.js"><link rel="prefetch" href="/assets/js/641.8e0801d8.js"><link rel="prefetch" href="/assets/js/642.f1d5e10b.js"><link rel="prefetch" href="/assets/js/644.1de498c2.js"><link rel="prefetch" href="/assets/js/645.c3a019f8.js"><link rel="prefetch" href="/assets/js/646.9c393f2b.js"><link rel="prefetch" href="/assets/js/65.a5f22217.js"><link rel="prefetch" href="/assets/js/66.40ee9425.js"><link rel="prefetch" href="/assets/js/67.481ed7c8.js"><link rel="prefetch" href="/assets/js/68.74ca9240.js"><link rel="prefetch" href="/assets/js/69.7643a0cf.js"><link rel="prefetch" href="/assets/js/7.63385f53.js"><link rel="prefetch" href="/assets/js/70.9becc575.js"><link rel="prefetch" href="/assets/js/71.b0903874.js"><link rel="prefetch" href="/assets/js/72.6e7b692c.js"><link rel="prefetch" href="/assets/js/73.e67fabef.js"><link rel="prefetch" href="/assets/js/74.4c8c1379.js"><link rel="prefetch" href="/assets/js/75.7149308e.js"><link rel="prefetch" href="/assets/js/76.e0ce4016.js"><link rel="prefetch" href="/assets/js/77.c31105bc.js"><link rel="prefetch" href="/assets/js/78.73d3cfa1.js"><link rel="prefetch" href="/assets/js/79.4b3118ff.js"><link rel="prefetch" href="/assets/js/8.8908ac1d.js"><link rel="prefetch" href="/assets/js/80.8e295801.js"><link rel="prefetch" href="/assets/js/81.8ceca8c2.js"><link rel="prefetch" href="/assets/js/82.c871eba9.js"><link rel="prefetch" href="/assets/js/83.9683fd81.js"><link rel="prefetch" href="/assets/js/84.13d07b6b.js"><link rel="prefetch" href="/assets/js/85.3779601c.js"><link rel="prefetch" href="/assets/js/86.f64f6205.js"><link rel="prefetch" href="/assets/js/87.0260cfef.js"><link rel="prefetch" href="/assets/js/88.247a84f5.js"><link rel="prefetch" href="/assets/js/89.36161880.js"><link rel="prefetch" href="/assets/js/9.21757d31.js"><link rel="prefetch" href="/assets/js/90.20240bfa.js"><link rel="prefetch" href="/assets/js/91.2b3836a2.js"><link rel="prefetch" href="/assets/js/92.f744276b.js"><link rel="prefetch" href="/assets/js/93.0c552d4a.js"><link rel="prefetch" href="/assets/js/94.515113cf.js"><link rel="prefetch" href="/assets/js/95.ff6049bd.js"><link rel="prefetch" href="/assets/js/96.3b33cb4c.js"><link rel="prefetch" href="/assets/js/97.ff049c6f.js"><link rel="prefetch" href="/assets/js/98.078707ee.js"><link rel="prefetch" href="/assets/js/99.7a0ece60.js"><link rel="prefetch" href="/assets/js/vendors~docsearch.ac6383e3.js">
    <link rel="stylesheet" href="/assets/css/0.styles.f7fca28c.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/QuickStart/QuickStart.html" class="nav-link">In progress</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.12.x/QuickStart/QuickStart.html" class="nav-link">V0.12.x</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/QuickStart/QuickStart.html" class="nav-link">In progress</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.12.x/QuickStart/QuickStart.html" class="nav-link">V0.12.x</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.cd07c2fa.js" defer></script><script src="/assets/js/3.2a42f5e4.js" defer></script><script src="/assets/js/643.178e53f8.js" defer></script>
  </body>
</html>