| <!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 1.7.1"> |
| <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.679f71b6.css" as="style"><link rel="preload" href="/assets/js/app.2ee94be6.js" as="script"><link rel="preload" href="/assets/js/3.49f0f20a.js" as="script"><link rel="preload" href="/assets/js/519.81cf792a.js" as="script"><link rel="prefetch" href="/assets/js/10.a9e4399a.js"><link rel="prefetch" href="/assets/js/100.c0880a20.js"><link rel="prefetch" href="/assets/js/101.fe0e7944.js"><link rel="prefetch" href="/assets/js/102.bfeec1ea.js"><link rel="prefetch" href="/assets/js/103.df833354.js"><link rel="prefetch" href="/assets/js/104.52b56e9b.js"><link rel="prefetch" href="/assets/js/105.c452fad7.js"><link rel="prefetch" href="/assets/js/106.c7f8e134.js"><link rel="prefetch" href="/assets/js/107.73f1e6e7.js"><link rel="prefetch" href="/assets/js/108.73b9cb44.js"><link rel="prefetch" href="/assets/js/109.936fa5e2.js"><link rel="prefetch" href="/assets/js/11.1a825151.js"><link rel="prefetch" href="/assets/js/110.08b56333.js"><link rel="prefetch" href="/assets/js/111.16b3b8ce.js"><link rel="prefetch" href="/assets/js/112.7d64e61d.js"><link rel="prefetch" href="/assets/js/113.9e1dfbca.js"><link rel="prefetch" href="/assets/js/114.7fa3a420.js"><link rel="prefetch" href="/assets/js/115.7be20f31.js"><link rel="prefetch" href="/assets/js/116.2115555c.js"><link rel="prefetch" href="/assets/js/117.8de5b313.js"><link rel="prefetch" href="/assets/js/118.bc60a8b6.js"><link rel="prefetch" href="/assets/js/119.b09e6d45.js"><link rel="prefetch" href="/assets/js/12.4679de68.js"><link rel="prefetch" href="/assets/js/120.4eb5d98a.js"><link rel="prefetch" href="/assets/js/121.b655fb3e.js"><link rel="prefetch" href="/assets/js/122.6ec9e5df.js"><link rel="prefetch" href="/assets/js/123.b055439b.js"><link rel="prefetch" href="/assets/js/124.c39ed99b.js"><link rel="prefetch" href="/assets/js/125.50fb4f34.js"><link rel="prefetch" href="/assets/js/126.61e7cd95.js"><link rel="prefetch" href="/assets/js/127.36cf01e9.js"><link rel="prefetch" href="/assets/js/128.2ef18be0.js"><link rel="prefetch" href="/assets/js/129.e26e1c8b.js"><link rel="prefetch" href="/assets/js/13.a5c792cb.js"><link rel="prefetch" href="/assets/js/130.583ee181.js"><link rel="prefetch" href="/assets/js/131.618128f2.js"><link rel="prefetch" href="/assets/js/132.d2e87605.js"><link rel="prefetch" href="/assets/js/133.158d692a.js"><link rel="prefetch" href="/assets/js/134.747fe32f.js"><link rel="prefetch" href="/assets/js/135.9f003888.js"><link rel="prefetch" href="/assets/js/136.125a0a29.js"><link rel="prefetch" href="/assets/js/137.2a764086.js"><link rel="prefetch" href="/assets/js/138.e2387d2d.js"><link rel="prefetch" href="/assets/js/139.108f4bef.js"><link rel="prefetch" href="/assets/js/14.f2409887.js"><link rel="prefetch" href="/assets/js/140.e3c96566.js"><link rel="prefetch" href="/assets/js/141.dd46375d.js"><link rel="prefetch" href="/assets/js/142.0cc9637a.js"><link rel="prefetch" href="/assets/js/143.1214a32c.js"><link rel="prefetch" href="/assets/js/144.e9e9a183.js"><link rel="prefetch" href="/assets/js/145.c0e74f7f.js"><link rel="prefetch" href="/assets/js/146.4495534d.js"><link rel="prefetch" href="/assets/js/147.78f93758.js"><link rel="prefetch" href="/assets/js/148.40e92d63.js"><link rel="prefetch" href="/assets/js/149.83fed0f9.js"><link rel="prefetch" href="/assets/js/15.e2df8f28.js"><link rel="prefetch" href="/assets/js/150.e5bf8dc4.js"><link rel="prefetch" href="/assets/js/151.682152d6.js"><link rel="prefetch" href="/assets/js/152.d1ca9877.js"><link rel="prefetch" href="/assets/js/153.38d334e6.js"><link rel="prefetch" href="/assets/js/154.a573c85a.js"><link rel="prefetch" href="/assets/js/155.60f39805.js"><link rel="prefetch" href="/assets/js/156.163049df.js"><link rel="prefetch" href="/assets/js/157.a156ff6d.js"><link rel="prefetch" href="/assets/js/158.10f79629.js"><link rel="prefetch" href="/assets/js/159.5e4dfdd7.js"><link rel="prefetch" href="/assets/js/16.590590ab.js"><link rel="prefetch" href="/assets/js/160.fb6b6bc7.js"><link rel="prefetch" href="/assets/js/161.ff5105cc.js"><link rel="prefetch" href="/assets/js/162.6be64e21.js"><link rel="prefetch" href="/assets/js/163.56ca83d7.js"><link rel="prefetch" href="/assets/js/164.113484ca.js"><link rel="prefetch" href="/assets/js/165.b4eea724.js"><link rel="prefetch" href="/assets/js/166.ec59b713.js"><link rel="prefetch" href="/assets/js/167.ac1b5d5d.js"><link rel="prefetch" href="/assets/js/168.f9d31ebb.js"><link rel="prefetch" href="/assets/js/169.d6bbfab8.js"><link rel="prefetch" href="/assets/js/17.9ba04d92.js"><link rel="prefetch" href="/assets/js/170.a7293e43.js"><link rel="prefetch" href="/assets/js/171.73ee2733.js"><link rel="prefetch" href="/assets/js/172.bc4bfdba.js"><link rel="prefetch" href="/assets/js/173.4482496d.js"><link rel="prefetch" href="/assets/js/174.3888c8be.js"><link rel="prefetch" href="/assets/js/175.f5758eb3.js"><link rel="prefetch" href="/assets/js/176.1017ac43.js"><link rel="prefetch" href="/assets/js/177.9432ade8.js"><link rel="prefetch" href="/assets/js/178.2930c946.js"><link rel="prefetch" href="/assets/js/179.3612085b.js"><link rel="prefetch" href="/assets/js/18.10f1cf84.js"><link rel="prefetch" href="/assets/js/180.62bca70a.js"><link rel="prefetch" href="/assets/js/181.075dafa2.js"><link rel="prefetch" href="/assets/js/182.d412e464.js"><link rel="prefetch" href="/assets/js/183.00096674.js"><link rel="prefetch" href="/assets/js/184.8bb48176.js"><link rel="prefetch" href="/assets/js/185.858bcd43.js"><link rel="prefetch" href="/assets/js/186.08a697d5.js"><link rel="prefetch" href="/assets/js/187.e0da8267.js"><link rel="prefetch" href="/assets/js/188.1bc563de.js"><link rel="prefetch" href="/assets/js/189.419477f9.js"><link rel="prefetch" href="/assets/js/19.cfa08450.js"><link rel="prefetch" href="/assets/js/190.9ce4e1d7.js"><link rel="prefetch" href="/assets/js/191.faef024e.js"><link rel="prefetch" href="/assets/js/192.8be13d9c.js"><link rel="prefetch" href="/assets/js/193.8df4f2fa.js"><link rel="prefetch" href="/assets/js/194.ca9e00b8.js"><link rel="prefetch" href="/assets/js/195.49b338e7.js"><link rel="prefetch" href="/assets/js/196.8f944c9f.js"><link rel="prefetch" href="/assets/js/197.57267595.js"><link rel="prefetch" href="/assets/js/198.46856cf8.js"><link rel="prefetch" href="/assets/js/199.76a1d61f.js"><link rel="prefetch" href="/assets/js/20.63dff530.js"><link rel="prefetch" href="/assets/js/200.fbd3d814.js"><link rel="prefetch" href="/assets/js/201.d6d33e3d.js"><link rel="prefetch" href="/assets/js/202.dc85e449.js"><link rel="prefetch" href="/assets/js/203.7ba3eec1.js"><link rel="prefetch" href="/assets/js/204.c3e5700e.js"><link rel="prefetch" href="/assets/js/205.a15dd906.js"><link rel="prefetch" href="/assets/js/206.933745a9.js"><link rel="prefetch" href="/assets/js/207.1a957ff7.js"><link rel="prefetch" href="/assets/js/208.3c20a813.js"><link rel="prefetch" href="/assets/js/209.bb193ab8.js"><link rel="prefetch" href="/assets/js/21.851eb8b7.js"><link rel="prefetch" href="/assets/js/210.531c6c9d.js"><link rel="prefetch" href="/assets/js/211.fd00753d.js"><link rel="prefetch" href="/assets/js/212.d8b42270.js"><link rel="prefetch" href="/assets/js/213.de168e28.js"><link rel="prefetch" href="/assets/js/214.b5091de7.js"><link rel="prefetch" href="/assets/js/215.befd3201.js"><link rel="prefetch" href="/assets/js/216.f227eae9.js"><link rel="prefetch" href="/assets/js/217.84e91829.js"><link rel="prefetch" href="/assets/js/218.1c6744f8.js"><link rel="prefetch" href="/assets/js/219.aef65258.js"><link rel="prefetch" href="/assets/js/22.ab7a2af8.js"><link rel="prefetch" href="/assets/js/220.1fb41856.js"><link rel="prefetch" href="/assets/js/221.cec4c756.js"><link rel="prefetch" href="/assets/js/222.a346f7f6.js"><link rel="prefetch" href="/assets/js/223.9a85fe4d.js"><link rel="prefetch" href="/assets/js/224.33b19919.js"><link rel="prefetch" href="/assets/js/225.3549d2e4.js"><link rel="prefetch" href="/assets/js/226.8d440b93.js"><link rel="prefetch" href="/assets/js/227.d1787387.js"><link rel="prefetch" href="/assets/js/228.9246beea.js"><link rel="prefetch" href="/assets/js/229.35fd7280.js"><link rel="prefetch" href="/assets/js/23.88a22028.js"><link rel="prefetch" href="/assets/js/230.343945f0.js"><link rel="prefetch" href="/assets/js/231.0f61fc67.js"><link rel="prefetch" href="/assets/js/232.09d3dfc2.js"><link rel="prefetch" href="/assets/js/233.89ddea46.js"><link rel="prefetch" href="/assets/js/234.f208ac73.js"><link rel="prefetch" href="/assets/js/235.29e93b26.js"><link rel="prefetch" href="/assets/js/236.7e237f16.js"><link rel="prefetch" href="/assets/js/237.6a73933f.js"><link rel="prefetch" href="/assets/js/238.d49e7876.js"><link rel="prefetch" href="/assets/js/239.b2742cff.js"><link rel="prefetch" href="/assets/js/24.2a2c516a.js"><link rel="prefetch" href="/assets/js/240.3d4ffc19.js"><link rel="prefetch" href="/assets/js/241.6d6149e4.js"><link rel="prefetch" href="/assets/js/242.48d58be9.js"><link rel="prefetch" href="/assets/js/243.99da6819.js"><link rel="prefetch" href="/assets/js/244.cf002d52.js"><link rel="prefetch" href="/assets/js/245.c255dd47.js"><link rel="prefetch" href="/assets/js/246.172ad322.js"><link rel="prefetch" href="/assets/js/247.c57a9fd5.js"><link rel="prefetch" href="/assets/js/248.3b80d22f.js"><link rel="prefetch" href="/assets/js/249.faae6988.js"><link rel="prefetch" href="/assets/js/25.f4708e51.js"><link rel="prefetch" href="/assets/js/250.af34839c.js"><link rel="prefetch" href="/assets/js/251.e3303cb3.js"><link rel="prefetch" href="/assets/js/252.ab2df332.js"><link rel="prefetch" href="/assets/js/253.97b8feff.js"><link rel="prefetch" href="/assets/js/254.a7e144f0.js"><link rel="prefetch" href="/assets/js/255.47b22290.js"><link rel="prefetch" href="/assets/js/256.f3fc3c5c.js"><link rel="prefetch" href="/assets/js/257.7fe6f524.js"><link rel="prefetch" href="/assets/js/258.4828e319.js"><link rel="prefetch" href="/assets/js/259.99325651.js"><link rel="prefetch" href="/assets/js/26.81ae73cb.js"><link rel="prefetch" href="/assets/js/260.f6e7777c.js"><link rel="prefetch" href="/assets/js/261.849bf2c2.js"><link rel="prefetch" href="/assets/js/262.b3894c8b.js"><link rel="prefetch" href="/assets/js/263.2ebeca81.js"><link rel="prefetch" href="/assets/js/264.b553e943.js"><link rel="prefetch" href="/assets/js/265.dae42b1d.js"><link rel="prefetch" href="/assets/js/266.714de63a.js"><link rel="prefetch" href="/assets/js/267.3656f797.js"><link rel="prefetch" href="/assets/js/268.e8f93cb7.js"><link rel="prefetch" href="/assets/js/269.bc95a278.js"><link rel="prefetch" href="/assets/js/27.0b57c820.js"><link rel="prefetch" href="/assets/js/270.f5b334a4.js"><link rel="prefetch" href="/assets/js/271.4bd2e795.js"><link rel="prefetch" href="/assets/js/272.2f2d3b8e.js"><link rel="prefetch" href="/assets/js/273.03dca16b.js"><link rel="prefetch" href="/assets/js/274.b89d6288.js"><link rel="prefetch" href="/assets/js/275.e1865bc1.js"><link rel="prefetch" href="/assets/js/276.cef75513.js"><link rel="prefetch" href="/assets/js/277.241bd20a.js"><link rel="prefetch" href="/assets/js/278.9a35b7c2.js"><link rel="prefetch" href="/assets/js/279.50ac2212.js"><link rel="prefetch" href="/assets/js/28.902cf242.js"><link rel="prefetch" href="/assets/js/280.d10cfd5b.js"><link rel="prefetch" href="/assets/js/281.c2c5ef73.js"><link rel="prefetch" href="/assets/js/282.0a8294a5.js"><link rel="prefetch" href="/assets/js/283.61b4efac.js"><link rel="prefetch" href="/assets/js/284.92cf6f87.js"><link rel="prefetch" href="/assets/js/285.774c8bff.js"><link rel="prefetch" href="/assets/js/286.b512efc4.js"><link rel="prefetch" href="/assets/js/287.0ef6b466.js"><link rel="prefetch" href="/assets/js/288.ea566e9e.js"><link rel="prefetch" href="/assets/js/289.24932bb7.js"><link rel="prefetch" href="/assets/js/29.8878a84b.js"><link rel="prefetch" href="/assets/js/290.d9e5f373.js"><link rel="prefetch" href="/assets/js/291.c3aa7523.js"><link rel="prefetch" href="/assets/js/292.ccda2693.js"><link rel="prefetch" href="/assets/js/293.33a99011.js"><link rel="prefetch" href="/assets/js/294.7e185d14.js"><link rel="prefetch" href="/assets/js/295.995c3829.js"><link rel="prefetch" href="/assets/js/296.43120e6c.js"><link rel="prefetch" href="/assets/js/297.03e327e1.js"><link rel="prefetch" href="/assets/js/298.5fbd4ba9.js"><link rel="prefetch" href="/assets/js/299.c55bd458.js"><link rel="prefetch" href="/assets/js/30.144a5c6c.js"><link rel="prefetch" href="/assets/js/300.eaba348a.js"><link rel="prefetch" href="/assets/js/301.40634cc4.js"><link rel="prefetch" href="/assets/js/302.b9b5e0de.js"><link rel="prefetch" href="/assets/js/303.3975d83a.js"><link rel="prefetch" href="/assets/js/304.02b24cfb.js"><link rel="prefetch" href="/assets/js/305.2fcdd0bd.js"><link rel="prefetch" href="/assets/js/306.9c517963.js"><link rel="prefetch" href="/assets/js/307.2a77c8a9.js"><link rel="prefetch" href="/assets/js/308.9d7acc5b.js"><link rel="prefetch" href="/assets/js/309.f0e46861.js"><link rel="prefetch" href="/assets/js/31.03034f21.js"><link rel="prefetch" href="/assets/js/310.8be7df64.js"><link rel="prefetch" href="/assets/js/311.d0203c5f.js"><link rel="prefetch" href="/assets/js/312.77223620.js"><link rel="prefetch" href="/assets/js/313.361474e1.js"><link rel="prefetch" href="/assets/js/314.dca1de82.js"><link rel="prefetch" href="/assets/js/315.7c0d34c3.js"><link rel="prefetch" href="/assets/js/316.0c950fac.js"><link rel="prefetch" href="/assets/js/317.c11ca215.js"><link rel="prefetch" href="/assets/js/318.125eeb05.js"><link rel="prefetch" href="/assets/js/319.fa772c20.js"><link rel="prefetch" href="/assets/js/32.8f05a31d.js"><link rel="prefetch" href="/assets/js/320.b9f91468.js"><link rel="prefetch" href="/assets/js/321.b30a0ff7.js"><link rel="prefetch" href="/assets/js/322.a2450e56.js"><link rel="prefetch" href="/assets/js/323.1c768a77.js"><link rel="prefetch" href="/assets/js/324.b90da6d6.js"><link rel="prefetch" href="/assets/js/325.3be8d1aa.js"><link rel="prefetch" href="/assets/js/326.0ceba341.js"><link rel="prefetch" href="/assets/js/327.f49f9dd3.js"><link rel="prefetch" href="/assets/js/328.a76af63e.js"><link rel="prefetch" href="/assets/js/329.2cf81867.js"><link rel="prefetch" href="/assets/js/33.8ab920f1.js"><link rel="prefetch" href="/assets/js/330.e58bfbdf.js"><link rel="prefetch" href="/assets/js/331.831bac21.js"><link rel="prefetch" href="/assets/js/332.0bf75b93.js"><link rel="prefetch" href="/assets/js/333.f745b4ff.js"><link rel="prefetch" href="/assets/js/334.ac913ef5.js"><link rel="prefetch" href="/assets/js/335.b74badca.js"><link rel="prefetch" href="/assets/js/336.6106538b.js"><link rel="prefetch" href="/assets/js/337.ea8aa400.js"><link rel="prefetch" href="/assets/js/338.4089f17d.js"><link rel="prefetch" href="/assets/js/339.0e1ef72b.js"><link rel="prefetch" href="/assets/js/34.44ac5494.js"><link rel="prefetch" href="/assets/js/340.1e4b4949.js"><link rel="prefetch" href="/assets/js/341.626acd05.js"><link rel="prefetch" href="/assets/js/342.f964d055.js"><link rel="prefetch" href="/assets/js/343.fd274150.js"><link rel="prefetch" href="/assets/js/344.fe5cd97c.js"><link rel="prefetch" href="/assets/js/345.388e2377.js"><link rel="prefetch" href="/assets/js/346.33f827d5.js"><link rel="prefetch" href="/assets/js/347.ac0f7d1f.js"><link rel="prefetch" href="/assets/js/348.55a24b1f.js"><link rel="prefetch" href="/assets/js/349.24d96653.js"><link rel="prefetch" href="/assets/js/35.7f32ce73.js"><link rel="prefetch" href="/assets/js/350.bdc7aeb4.js"><link rel="prefetch" href="/assets/js/351.73f0ec56.js"><link rel="prefetch" href="/assets/js/352.b2a7ef72.js"><link rel="prefetch" href="/assets/js/353.0a675356.js"><link rel="prefetch" href="/assets/js/354.09076830.js"><link rel="prefetch" href="/assets/js/355.b7825939.js"><link rel="prefetch" href="/assets/js/356.0f8c88cc.js"><link rel="prefetch" href="/assets/js/357.1650fb7b.js"><link rel="prefetch" href="/assets/js/358.553f1895.js"><link rel="prefetch" href="/assets/js/359.4a142a9f.js"><link rel="prefetch" href="/assets/js/36.be67eb6c.js"><link rel="prefetch" href="/assets/js/360.8c0b9057.js"><link rel="prefetch" href="/assets/js/361.9422cf00.js"><link rel="prefetch" href="/assets/js/362.d25931e0.js"><link rel="prefetch" href="/assets/js/363.3bbb2f09.js"><link rel="prefetch" href="/assets/js/364.54c7d139.js"><link rel="prefetch" href="/assets/js/365.543f0cd8.js"><link rel="prefetch" href="/assets/js/366.4367f640.js"><link rel="prefetch" href="/assets/js/367.ab903303.js"><link rel="prefetch" href="/assets/js/368.df3952bb.js"><link rel="prefetch" href="/assets/js/369.25b6b663.js"><link rel="prefetch" href="/assets/js/37.c72b6907.js"><link rel="prefetch" href="/assets/js/370.348a43fd.js"><link rel="prefetch" href="/assets/js/371.c10d905a.js"><link rel="prefetch" href="/assets/js/372.967bc3e0.js"><link rel="prefetch" href="/assets/js/373.20a2bde1.js"><link rel="prefetch" href="/assets/js/374.1f6ed201.js"><link rel="prefetch" href="/assets/js/375.d74ded97.js"><link rel="prefetch" href="/assets/js/376.b5a39d89.js"><link rel="prefetch" href="/assets/js/377.aaa95bcd.js"><link rel="prefetch" href="/assets/js/378.276d09c8.js"><link rel="prefetch" href="/assets/js/379.98587ca7.js"><link rel="prefetch" href="/assets/js/38.2334aea2.js"><link rel="prefetch" href="/assets/js/380.072826ba.js"><link rel="prefetch" href="/assets/js/381.6367c284.js"><link rel="prefetch" href="/assets/js/382.ba67daf9.js"><link rel="prefetch" href="/assets/js/383.7e98022d.js"><link rel="prefetch" href="/assets/js/384.1358fbd0.js"><link rel="prefetch" href="/assets/js/385.9a3bdf8f.js"><link rel="prefetch" href="/assets/js/386.e8c15d4a.js"><link rel="prefetch" href="/assets/js/387.3f7781da.js"><link rel="prefetch" href="/assets/js/388.a28d59e8.js"><link rel="prefetch" href="/assets/js/389.d70d34ac.js"><link rel="prefetch" href="/assets/js/39.683bc07a.js"><link rel="prefetch" href="/assets/js/390.d0e96c54.js"><link rel="prefetch" href="/assets/js/391.a19d5823.js"><link rel="prefetch" href="/assets/js/392.28382439.js"><link rel="prefetch" href="/assets/js/393.186c2c77.js"><link rel="prefetch" href="/assets/js/394.f1a21aeb.js"><link rel="prefetch" href="/assets/js/395.8f23b199.js"><link rel="prefetch" href="/assets/js/396.bbc57301.js"><link rel="prefetch" href="/assets/js/397.030982be.js"><link rel="prefetch" href="/assets/js/398.7504ee54.js"><link rel="prefetch" href="/assets/js/399.26af53a1.js"><link rel="prefetch" href="/assets/js/4.06d2a3f5.js"><link rel="prefetch" href="/assets/js/40.829e9e65.js"><link rel="prefetch" href="/assets/js/400.6dbc2192.js"><link rel="prefetch" href="/assets/js/401.3aae5fae.js"><link rel="prefetch" href="/assets/js/402.f3a42f28.js"><link rel="prefetch" href="/assets/js/403.55bc079e.js"><link rel="prefetch" href="/assets/js/404.a39c3fee.js"><link rel="prefetch" href="/assets/js/405.83f6961a.js"><link rel="prefetch" href="/assets/js/406.11f70cce.js"><link rel="prefetch" href="/assets/js/407.69a823e2.js"><link rel="prefetch" href="/assets/js/408.64168e39.js"><link rel="prefetch" href="/assets/js/409.39986fe2.js"><link rel="prefetch" href="/assets/js/41.ae8c3e94.js"><link rel="prefetch" href="/assets/js/410.d3d7fce4.js"><link rel="prefetch" href="/assets/js/411.1f6402d1.js"><link rel="prefetch" href="/assets/js/412.896aee78.js"><link rel="prefetch" href="/assets/js/413.5957daba.js"><link rel="prefetch" href="/assets/js/414.5e05b986.js"><link rel="prefetch" href="/assets/js/415.38e08c2a.js"><link rel="prefetch" href="/assets/js/416.6d6973ed.js"><link rel="prefetch" href="/assets/js/417.30fd8e24.js"><link rel="prefetch" href="/assets/js/418.c297ee7a.js"><link rel="prefetch" href="/assets/js/419.d621bb5d.js"><link rel="prefetch" href="/assets/js/42.45821720.js"><link rel="prefetch" href="/assets/js/420.9bbeac2a.js"><link rel="prefetch" href="/assets/js/421.8c919d48.js"><link rel="prefetch" href="/assets/js/422.c5f8a551.js"><link rel="prefetch" href="/assets/js/423.1fb6b2d5.js"><link rel="prefetch" href="/assets/js/424.ab610f02.js"><link rel="prefetch" href="/assets/js/425.c86176fc.js"><link rel="prefetch" href="/assets/js/426.3775cf11.js"><link rel="prefetch" href="/assets/js/427.06cbe3f9.js"><link rel="prefetch" href="/assets/js/428.1fcd3b3b.js"><link rel="prefetch" href="/assets/js/429.5cea0f19.js"><link rel="prefetch" href="/assets/js/43.bd27e7b5.js"><link rel="prefetch" href="/assets/js/430.0fa95fd2.js"><link rel="prefetch" href="/assets/js/431.6802bf93.js"><link rel="prefetch" href="/assets/js/432.c91272f8.js"><link rel="prefetch" href="/assets/js/433.89a55e39.js"><link rel="prefetch" href="/assets/js/434.8dbdd489.js"><link rel="prefetch" href="/assets/js/435.6e3bd07f.js"><link rel="prefetch" href="/assets/js/436.eec57805.js"><link rel="prefetch" href="/assets/js/437.d772b594.js"><link rel="prefetch" href="/assets/js/438.e51e3319.js"><link rel="prefetch" href="/assets/js/439.fce2edab.js"><link rel="prefetch" href="/assets/js/44.e0cd7e7b.js"><link rel="prefetch" href="/assets/js/440.333a51d4.js"><link rel="prefetch" href="/assets/js/441.3bce664b.js"><link rel="prefetch" href="/assets/js/442.c34a59ce.js"><link rel="prefetch" href="/assets/js/443.7e468d0b.js"><link rel="prefetch" href="/assets/js/444.dd4b1814.js"><link rel="prefetch" href="/assets/js/445.c630e832.js"><link rel="prefetch" href="/assets/js/446.08015418.js"><link rel="prefetch" href="/assets/js/447.6f6b9988.js"><link rel="prefetch" href="/assets/js/448.a0fb6385.js"><link rel="prefetch" href="/assets/js/449.002c690b.js"><link rel="prefetch" href="/assets/js/45.fa02a8c0.js"><link rel="prefetch" href="/assets/js/450.16eaed86.js"><link rel="prefetch" href="/assets/js/451.7f5cb30f.js"><link rel="prefetch" href="/assets/js/452.487546cd.js"><link rel="prefetch" href="/assets/js/453.0267cdbf.js"><link rel="prefetch" href="/assets/js/454.7e89eb47.js"><link rel="prefetch" href="/assets/js/455.d21c5410.js"><link rel="prefetch" href="/assets/js/456.dc71ee50.js"><link rel="prefetch" href="/assets/js/457.47d1842a.js"><link rel="prefetch" href="/assets/js/458.7fa36be1.js"><link rel="prefetch" href="/assets/js/459.0aac2ce5.js"><link rel="prefetch" href="/assets/js/46.cfcdcea2.js"><link rel="prefetch" href="/assets/js/460.beb14272.js"><link rel="prefetch" href="/assets/js/461.afb1c4cb.js"><link rel="prefetch" href="/assets/js/462.d5664c9b.js"><link rel="prefetch" href="/assets/js/463.8bf7d1d8.js"><link rel="prefetch" href="/assets/js/464.dcaaabc9.js"><link rel="prefetch" href="/assets/js/465.9865dd17.js"><link rel="prefetch" href="/assets/js/466.98ffd234.js"><link rel="prefetch" href="/assets/js/467.3596c452.js"><link rel="prefetch" href="/assets/js/468.31cb0821.js"><link rel="prefetch" href="/assets/js/469.3c226943.js"><link rel="prefetch" href="/assets/js/47.2c60b5b2.js"><link rel="prefetch" href="/assets/js/470.bfbc6391.js"><link rel="prefetch" href="/assets/js/471.fbafb68b.js"><link rel="prefetch" href="/assets/js/472.1ebbe04c.js"><link rel="prefetch" href="/assets/js/473.ad568006.js"><link rel="prefetch" href="/assets/js/474.e0398f59.js"><link rel="prefetch" href="/assets/js/475.c3eb4bf4.js"><link rel="prefetch" href="/assets/js/476.635aba22.js"><link rel="prefetch" href="/assets/js/477.c548a4c4.js"><link rel="prefetch" href="/assets/js/478.396635e5.js"><link rel="prefetch" href="/assets/js/479.280dedcb.js"><link rel="prefetch" href="/assets/js/48.d24599f6.js"><link rel="prefetch" href="/assets/js/480.90c2b1ca.js"><link rel="prefetch" href="/assets/js/481.60d45032.js"><link rel="prefetch" href="/assets/js/482.1f68aca9.js"><link rel="prefetch" href="/assets/js/483.55e47bf4.js"><link rel="prefetch" href="/assets/js/484.e46c8967.js"><link rel="prefetch" href="/assets/js/485.ab051357.js"><link rel="prefetch" href="/assets/js/486.28b4de3f.js"><link rel="prefetch" href="/assets/js/487.fb1dfe76.js"><link rel="prefetch" href="/assets/js/488.3ac44db2.js"><link rel="prefetch" href="/assets/js/489.d89fd855.js"><link rel="prefetch" href="/assets/js/49.3de3d3a7.js"><link rel="prefetch" href="/assets/js/490.adee2681.js"><link rel="prefetch" href="/assets/js/491.f398cc80.js"><link rel="prefetch" href="/assets/js/492.72c00577.js"><link rel="prefetch" href="/assets/js/493.cb94276f.js"><link rel="prefetch" href="/assets/js/494.b8246841.js"><link rel="prefetch" href="/assets/js/495.16c14c26.js"><link rel="prefetch" href="/assets/js/496.9467835e.js"><link rel="prefetch" href="/assets/js/497.60af40d7.js"><link rel="prefetch" href="/assets/js/498.61b545f9.js"><link rel="prefetch" href="/assets/js/499.6d488fd4.js"><link rel="prefetch" href="/assets/js/5.33db7f08.js"><link rel="prefetch" href="/assets/js/50.27055b53.js"><link rel="prefetch" href="/assets/js/500.1b71f590.js"><link rel="prefetch" href="/assets/js/501.e940222f.js"><link rel="prefetch" href="/assets/js/502.addeafa0.js"><link rel="prefetch" href="/assets/js/503.b87275e9.js"><link rel="prefetch" href="/assets/js/504.55e82de2.js"><link rel="prefetch" href="/assets/js/505.166dab85.js"><link rel="prefetch" href="/assets/js/506.00e96d9c.js"><link rel="prefetch" href="/assets/js/507.239a1650.js"><link rel="prefetch" href="/assets/js/508.f360fdee.js"><link rel="prefetch" href="/assets/js/509.0e831bf6.js"><link rel="prefetch" href="/assets/js/51.08fc9992.js"><link rel="prefetch" href="/assets/js/510.3181ee34.js"><link rel="prefetch" href="/assets/js/511.8b29392c.js"><link rel="prefetch" href="/assets/js/512.65dc78dd.js"><link rel="prefetch" href="/assets/js/513.bdfc09f4.js"><link rel="prefetch" href="/assets/js/514.b8545b0a.js"><link rel="prefetch" href="/assets/js/515.06b62785.js"><link rel="prefetch" href="/assets/js/516.18555b03.js"><link rel="prefetch" href="/assets/js/517.9f3641fe.js"><link rel="prefetch" href="/assets/js/518.fb028a47.js"><link rel="prefetch" href="/assets/js/52.018b3127.js"><link rel="prefetch" href="/assets/js/520.64cf0e4f.js"><link rel="prefetch" href="/assets/js/521.f0b50c7c.js"><link rel="prefetch" href="/assets/js/522.0ee533fc.js"><link rel="prefetch" href="/assets/js/523.06d138f1.js"><link rel="prefetch" href="/assets/js/524.1d051ca5.js"><link rel="prefetch" href="/assets/js/525.6b2c9928.js"><link rel="prefetch" href="/assets/js/53.926cbc9b.js"><link rel="prefetch" href="/assets/js/54.282e9e35.js"><link rel="prefetch" href="/assets/js/55.8aa2cf33.js"><link rel="prefetch" href="/assets/js/56.9a4735e6.js"><link rel="prefetch" href="/assets/js/57.3ffbf205.js"><link rel="prefetch" href="/assets/js/58.f93f9595.js"><link rel="prefetch" href="/assets/js/59.2121c943.js"><link rel="prefetch" href="/assets/js/6.d37d398a.js"><link rel="prefetch" href="/assets/js/60.2d67bc6c.js"><link rel="prefetch" href="/assets/js/61.c44ac685.js"><link rel="prefetch" href="/assets/js/62.12596064.js"><link rel="prefetch" href="/assets/js/63.72f9f061.js"><link rel="prefetch" href="/assets/js/64.78c508ed.js"><link rel="prefetch" href="/assets/js/65.25acd8ac.js"><link rel="prefetch" href="/assets/js/66.cc56a955.js"><link rel="prefetch" href="/assets/js/67.3d95afce.js"><link rel="prefetch" href="/assets/js/68.05fa411c.js"><link rel="prefetch" href="/assets/js/69.69962e06.js"><link rel="prefetch" href="/assets/js/7.8c733af6.js"><link rel="prefetch" href="/assets/js/70.059cdd51.js"><link rel="prefetch" href="/assets/js/71.0c9d3b74.js"><link rel="prefetch" href="/assets/js/72.3ffd02d2.js"><link rel="prefetch" href="/assets/js/73.25916778.js"><link rel="prefetch" href="/assets/js/74.41363885.js"><link rel="prefetch" href="/assets/js/75.70de16ad.js"><link rel="prefetch" href="/assets/js/76.06e76fe6.js"><link rel="prefetch" href="/assets/js/77.2416667e.js"><link rel="prefetch" href="/assets/js/78.2f07e42d.js"><link rel="prefetch" href="/assets/js/79.994c527d.js"><link rel="prefetch" href="/assets/js/8.ab03c33c.js"><link rel="prefetch" href="/assets/js/80.95389c9b.js"><link rel="prefetch" href="/assets/js/81.1858fc7e.js"><link rel="prefetch" href="/assets/js/82.ff5479e3.js"><link rel="prefetch" href="/assets/js/83.0d8232c4.js"><link rel="prefetch" href="/assets/js/84.13db35cf.js"><link rel="prefetch" href="/assets/js/85.37568ceb.js"><link rel="prefetch" href="/assets/js/86.48d44393.js"><link rel="prefetch" href="/assets/js/87.448dc2e9.js"><link rel="prefetch" href="/assets/js/88.325c42b1.js"><link rel="prefetch" href="/assets/js/89.0532fdad.js"><link rel="prefetch" href="/assets/js/9.fda181fa.js"><link rel="prefetch" href="/assets/js/90.b79baf47.js"><link rel="prefetch" href="/assets/js/91.bc5b8eb2.js"><link rel="prefetch" href="/assets/js/92.e0783e23.js"><link rel="prefetch" href="/assets/js/93.938bb469.js"><link rel="prefetch" href="/assets/js/94.a025f6e1.js"><link rel="prefetch" href="/assets/js/95.afc145ea.js"><link rel="prefetch" href="/assets/js/96.b99544b9.js"><link rel="prefetch" href="/assets/js/97.50f0803b.js"><link rel="prefetch" href="/assets/js/98.2284725e.js"><link rel="prefetch" href="/assets/js/99.e4d92dc9.js"><link rel="prefetch" href="/assets/js/vendors~docsearch.262891fb.js"> |
| <link rel="stylesheet" href="/assets/css/0.styles.679f71b6.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="/zh/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/7-Ecosystem Integration/3-Spark TsFile.html" class="nav-link">English</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/3-Spark TsFile.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="/zh/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/7-Ecosystem Integration/3-Spark TsFile.html" class="nav-link">English</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/3-Spark TsFile.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 open"><span>7-生态集成</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/1-Grafana.html" class="sidebar-link">Grafana</a></li><li><a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/2-MapReduce TsFile.html" class="sidebar-link">MapReduce TsFile</a></li><li><a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/3-Spark TsFile.html" class="active sidebar-link">Spark TsFile</a></li><li><a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/4-Spark IoTDB.html" class="sidebar-link">Spark IoTDB</a></li><li><a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/5-Hive TsFile.html" class="sidebar-link">Hive TsFile</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>8-系统设计</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h1 id="tsfile-spark-connector用户指南"><a href="#tsfile-spark-connector用户指南" class="header-anchor">#</a> TsFile-Spark-Connector用户指南</h1> <h2 id="_1-关于tsfile-spark-connector"><a href="#_1-关于tsfile-spark-connector" class="header-anchor">#</a> 1. 关于TsFile-Spark-Connector</h2> <p>TsFile-Spark-Connector对Tsfile类型的外部数据源实现Spark的支持。 这使用户可以通过Spark读取，写入和查询Tsfile。</p> <p>使用此连接器，您可以</p> <ul><li>从本地文件系统或hdfs将单个TsFile加载到Spark</li> <li>从本地文件系统或hdfs将特定目录中的所有文件加载到Spark</li> <li>将数据从Spark写入TsFile</li></ul> <h2 id="_2-系统要求"><a href="#_2-系统要求" class="header-anchor">#</a> 2. 系统要求</h2> <table><thead><tr><th>Spark版本</th> <th>Scala 版本</th> <th>Java 版本</th> <th>TsFile</th></tr></thead> <tbody><tr><td><code>2.4.3</code></td> <td><code>2.11.8</code></td> <td><code>1.8</code></td> <td><code>0.9.3</code></td></tr></tbody></table> <blockquote><p>注意：有关如何下载和使用TsFile的更多信息，请参见以下链接: https://github.com/apache/incubator-iotdb/tree/master/tsfile.</p></blockquote> <h2 id="_3-快速开始"><a href="#_3-快速开始" class="header-anchor">#</a> 3. 快速开始</h2> <h3 id="本地模式"><a href="#本地模式" class="header-anchor">#</a> 本地模式</h3> <p>在本地模式下使用TsFile-Spark-Connector启动Spark：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>./<spark-shell-path> --jars tsfile-spark-connector.jar,tsfile-0.9.3-jar-with-dependencies.jar |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>注意：</p> <ul><li><spark-shell-path>是您的spark-shell的真实路径。</li> <li>多个jar包用逗号分隔，没有任何空格。</li> <li>有关如何获取TsFile的信息，请参见https://github.com/apache/incubator-iotdb/tree/master/tsfile。</li></ul> <h3 id="分布式模式"><a href="#分布式模式" class="header-anchor">#</a> 分布式模式</h3> <p>在分布式模式下使用TsFile-Spark-Connector启动Spark（即，Spark集群通过spark-shell连接）：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>. /<spark-shell-path> --jars tsfile-spark-connector.jar,tsfile-0.9.3-jar-with-dependencies.jar --master spark://ip:7077 |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>注意：</p> <ul><li><spark-shell-path>是您的spark-shell的真实路径。</li> <li>多个jar包用逗号分隔，没有任何空格。</li> <li>有关如何获取TsFile的信息，请参见https://github.com/apache/incubator-iotdb/tree/master/tsfile。</li></ul> <h2 id="_4-数据类型对应"><a href="#_4-数据类型对应" class="header-anchor">#</a> 4. 数据类型对应</h2> <table><thead><tr><th>TsFile数据类型</th> <th>SparkSQL数据类型</th></tr></thead> <tbody><tr><td>BOOLEAN</td> <td>BooleanType</td></tr> <tr><td>INT32</td> <td>IntegerType</td></tr> <tr><td>INT64</td> <td>LongType</td></tr> <tr><td>FLOAT</td> <td>FloatType</td></tr> <tr><td>DOUBLE</td> <td>DoubleType</td></tr> <tr><td>TEXT</td> <td>StringType</td></tr></tbody></table> <h2 id="_5-模式推断"><a href="#_5-模式推断" class="header-anchor">#</a> 5. 模式推断</h2> <p>显示TsFile的方式取决于架构。 以以下TsFile结构为例：TsFile模式中有三个度量：状态，温度和硬件。 这三种测量的基本信息如下：</p> <center><table style="text-align:center;"><tr><th colspan="2">名称</th><th colspan="2">类型</th><th colspan="2">编码</th></tr> <tr><td colspan="2">status</td><td colspan="2">Boolean</td><td colspan="2">PLAIN</td></tr> <tr><td colspan="2">temperature</td><td colspan="2">Float</td><td colspan="2">RLE</td></tr> <tr><td colspan="2">hardware</td><td colspan="2">Text</td><td colspan="2">PLAIN</td></tr></table></center> <p>TsFile中的现有数据如下：</p> <center><table style="text-align:center;"><tr><th colspan="4">device:root.ln.wf01.wt01</th><th colspan="4">device:root.ln.wf02.wt02</th></tr> <tr><th colspan="2">status</th><th colspan="2">temperature</th><th colspan="2">hardware</th><th colspan="2">status</th></tr> <tr><th>time</th><th>value</th><th>time</th><th>value</th><th>time</th><th>value</th><th>time</th><th>value</th></tr> <tr><td>1</td><td>True</td><td>1</td><td>2.2</td><td>2</td><td>"aaa"</td><td>1</td><td>True</td></tr> <tr><td>3</td><td>True</td><td>2</td><td>2.2</td><td>4</td><td>"bbb"</td><td>2</td><td>False</td></tr> <tr><td>5</td><td> False </td><td>3</td><td>2.1</td><td>6</td><td>"ccc"</td><td>4</td><td>True</td></tr></table></center> <p>相应的SparkSQL表如下：</p> <table><thead><tr><th>time</th> <th>root.ln.wf02.wt02.temperature</th> <th>root.ln.wf02.wt02.status</th> <th>root.ln.wf02.wt02.hardware</th> <th>root.ln.wf01.wt01.temperature</th> <th>root.ln.wf01.wt01.status</th> <th>root.ln.wf01.wt01.hardware</th></tr></thead> <tbody><tr><td>1</td> <td>null</td> <td>true</td> <td>null</td> <td>2.2</td> <td>true</td> <td>null</td></tr> <tr><td>2</td> <td>null</td> <td>false</td> <td>aaa</td> <td>2.2</td> <td>null</td> <td>null</td></tr> <tr><td>3</td> <td>null</td> <td>null</td> <td>null</td> <td>2.1</td> <td>true</td> <td>null</td></tr> <tr><td>4</td> <td>null</td> <td>true</td> <td>bbb</td> <td>null</td> <td>null</td> <td>null</td></tr> <tr><td>5</td> <td>null</td> <td>null</td> <td>null</td> <td>null</td> <td>false</td> <td>null</td></tr> <tr><td>6</td> <td>null</td> <td>null</td> <td>ccc</td> <td>null</td> <td>null</td> <td>null</td></tr></tbody></table> <p>您还可以使用如下所示的窄表形式：（您可以参阅第6部分，了解如何使用窄表形式）</p> <table><thead><tr><th>time</th> <th>device_name</th> <th>status</th> <th>hardware</th> <th>temperature</th></tr></thead> <tbody><tr><td>1</td> <td>root.ln.wf02.wt01</td> <td>true</td> <td>null</td> <td>2.2</td></tr> <tr><td>1</td> <td>root.ln.wf02.wt02</td> <td>true</td> <td>null</td> <td>null</td></tr> <tr><td>2</td> <td>root.ln.wf02.wt01</td> <td>null</td> <td>null</td> <td>2.2</td></tr> <tr><td>2</td> <td>root.ln.wf02.wt02</td> <td>false</td> <td>aaa</td> <td>null</td></tr> <tr><td>3</td> <td>root.ln.wf02.wt01</td> <td>true</td> <td>null</td> <td>2.1</td></tr> <tr><td>4</td> <td>root.ln.wf02.wt02</td> <td>true</td> <td>bbb</td> <td>null</td></tr> <tr><td>5</td> <td>root.ln.wf02.wt01</td> <td>false</td> <td>null</td> <td>null</td></tr> <tr><td>6</td> <td>root.ln.wf02.wt02</td> <td>null</td> <td>ccc</td> <td>null</td></tr></tbody></table> <h2 id="_6-scala-api"><a href="#_6-scala-api" class="header-anchor">#</a> 6. Scala API</h2> <p>注意：请记住预先分配必要的读写权限。</p> <h3 id="示例1-从本地文件系统读取"><a href="#示例1-从本地文件系统读取" class="header-anchor">#</a> 示例1：从本地文件系统读取</h3> <div class="language-scala line-numbers-mode"><pre class="language-scala"><code><span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>tsfile<span class="token punctuation">.</span></span>_ |
| <span class="token keyword">val</span> wide_df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"test.tsfile"</span><span class="token punctuation">)</span> |
| wide_df<span class="token punctuation">.</span>show |
| |
| <span class="token keyword">val</span> narrow_df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"test.tsfile"</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span> |
| narrow_df<span class="token punctuation">.</span>show |
| </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></div></div><h3 id="示例2-从hadoop文件系统读取"><a href="#示例2-从hadoop文件系统读取" class="header-anchor">#</a> 示例2：从hadoop文件系统读取</h3> <div class="language-scala line-numbers-mode"><pre class="language-scala"><code><span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>tsfile<span class="token punctuation">.</span></span>_ |
| <span class="token keyword">val</span> wide_df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/test.tsfile"</span><span class="token punctuation">)</span> |
| wide_df<span class="token punctuation">.</span>show |
| |
| <span class="token keyword">val</span> narrow_df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/test.tsfile"</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span> |
| narrow_df<span class="token punctuation">.</span>show |
| </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></div></div><h3 id="示例3-从特定目录读取"><a href="#示例3-从特定目录读取" class="header-anchor">#</a> 示例3：从特定目录读取</h3> <div class="language-scala line-numbers-mode"><pre class="language-scala"><code><span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>tsfile<span class="token punctuation">.</span></span>_ |
| <span class="token keyword">val</span> df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/usr/hadoop"</span><span class="token punctuation">)</span> |
| df<span class="token punctuation">.</span>show |
| </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>注1：现在不支持目录中所有TsFile的全局时间排序。</p> <p>注2：具有相同名称的度量应具有相同的架构。</p> <h3 id="示例4-广泛形式的查询"><a href="#示例4-广泛形式的查询" class="header-anchor">#</a> 示例4：广泛形式的查询</h3> <div class="language-scala line-numbers-mode"><pre class="language-scala"><code><span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>tsfile<span class="token punctuation">.</span></span>_ |
| <span class="token keyword">val</span> df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/test.tsfile"</span><span class="token punctuation">)</span> |
| df<span class="token punctuation">.</span>createOrReplaceTempView<span class="token punctuation">(</span><span class="token string">"tsfile_table"</span><span class="token punctuation">)</span> |
| <span class="token keyword">val</span> newDf <span class="token operator">=</span> spark<span class="token punctuation">.</span>sql<span class="token punctuation">(</span><span class="token string">"select * from tsfile_table where `device_1.sensor_1`>0 and `device_1.sensor_2` < 22"</span><span class="token punctuation">)</span> |
| newDf<span class="token punctuation">.</span>show |
| </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></div></div><div class="language-scala line-numbers-mode"><pre class="language-scala"><code><span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>tsfile<span class="token punctuation">.</span></span>_ |
| <span class="token keyword">val</span> df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/test.tsfile"</span><span class="token punctuation">)</span> |
| df<span class="token punctuation">.</span>createOrReplaceTempView<span class="token punctuation">(</span><span class="token string">"tsfile_table"</span><span class="token punctuation">)</span> |
| <span class="token keyword">val</span> newDf <span class="token operator">=</span> spark<span class="token punctuation">.</span>sql<span class="token punctuation">(</span><span class="token string">"select count(*) from tsfile_table"</span><span class="token punctuation">)</span> |
| newDf<span class="token punctuation">.</span>show |
| </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></div></div><h3 id="示例5-缩小形式的查询"><a href="#示例5-缩小形式的查询" class="header-anchor">#</a> 示例5：缩小形式的查询</h3> <div class="language-scala line-numbers-mode"><pre class="language-scala"><code><span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>tsfile<span class="token punctuation">.</span></span>_ |
| <span class="token keyword">val</span> df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/test.tsfile"</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span> |
| df<span class="token punctuation">.</span>createOrReplaceTempView<span class="token punctuation">(</span><span class="token string">"tsfile_table"</span><span class="token punctuation">)</span> |
| <span class="token keyword">val</span> newDf <span class="token operator">=</span> spark<span class="token punctuation">.</span>sql<span class="token punctuation">(</span><span class="token string">"select * from tsfile_table where device_name = 'root.ln.wf02.wt02' and temperature > 5"</span><span class="token punctuation">)</span> |
| newDf<span class="token punctuation">.</span>show |
| </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></div></div><div class="language-scala line-numbers-mode"><pre class="language-scala"><code><span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>tsfile<span class="token punctuation">.</span></span>_ |
| <span class="token keyword">val</span> df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/test.tsfile"</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span> |
| df<span class="token punctuation">.</span>createOrReplaceTempView<span class="token punctuation">(</span><span class="token string">"tsfile_table"</span><span class="token punctuation">)</span> |
| <span class="token keyword">val</span> newDf <span class="token operator">=</span> spark<span class="token punctuation">.</span>sql<span class="token punctuation">(</span><span class="token string">"select count(*) from tsfile_table"</span><span class="token punctuation">)</span> |
| newDf<span class="token punctuation">.</span>show |
| </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></div></div><h3 id="例子6-以宽写形式"><a href="#例子6-以宽写形式" class="header-anchor">#</a> 例子6：以宽写形式</h3> <div class="language-scala line-numbers-mode"><pre class="language-scala"><code><span class="token comment">// we only support wide_form table to write</span> |
| <span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>tsfile<span class="token punctuation">.</span></span>_ |
| |
| <span class="token keyword">val</span> df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/test.tsfile"</span><span class="token punctuation">)</span> |
| df<span class="token punctuation">.</span>show |
| df<span class="token punctuation">.</span>write<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/output"</span><span class="token punctuation">)</span> |
| |
| <span class="token keyword">val</span> newDf <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/output"</span><span class="token punctuation">)</span> |
| newDf<span class="token punctuation">.</span>show |
| </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></div></div><h2 id="示例6-以窄写形式"><a href="#示例6-以窄写形式" class="header-anchor">#</a> 示例6：以窄写形式</h2> <div class="language-scala line-numbers-mode"><pre class="language-scala"><code><span class="token comment">// we only support wide_form table to write</span> |
| <span class="token keyword">import</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>tsfile<span class="token punctuation">.</span></span>_ |
| |
| <span class="token keyword">val</span> df <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/test.tsfile"</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span> |
| df<span class="token punctuation">.</span>show |
| df<span class="token punctuation">.</span>write<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/output"</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span> |
| |
| <span class="token keyword">val</span> newDf <span class="token operator">=</span> spark<span class="token punctuation">.</span>read<span class="token punctuation">.</span>tsfile<span class="token punctuation">(</span><span class="token string">"hdfs://localhost:9000/output"</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span> |
| newDf<span class="token punctuation">.</span>show |
| </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></div></div><h2 id="附录a-模式推断的旧设计"><a href="#附录a-模式推断的旧设计" class="header-anchor">#</a> 附录A：模式推断的旧设计</h2> <p>显示TsFile的方式与TsFile Schema有关。 以以下TsFile结构为例：TsFile架构中有三个度量：状态，温度和硬件。 这三个度量的基本信息如下：</p> <center><table style="text-align:center;"><tr><th colspan="2">名称</th><th colspan="2">类型</th><th colspan="2">编码</th></tr> <tr><td colspan="2">status</td><td colspan="2">Boolean</td><td colspan="2">PLAIN</td></tr> <tr><td colspan="2">temperature</td><td colspan="2">Float</td><td colspan="2">RLE</td></tr> <tr><td colspan="2">hardware</td><td colspan="2">Text</td><td colspan="2">PLAIN</td></tr></table> <span>测量的基本信息</span></center> <p>文件中的现有数据如下：</p> <center><table style="text-align:center;"><tr><th colspan="4">delta\_object:root.ln.wf01.wt01</th><th colspan="4">delta\_object:root.ln.wf02.wt02</th><th colspan="4">delta\_object:root.sgcc.wf03.wt01</th></tr> <tr><th colspan="2">status</th><th colspan="2">temperature</th><th colspan="2">hardware</th><th colspan="2">status</th><th colspan="2">status</th><th colspan="2">temperature</th></tr> <tr><th>time</th><th>value</th><th>time</th><th>value</th><th>time</th><th>value</th><th>time</th><th>value</th><th>time</th><th>value</th><th>time</th><th>value</th></tr> <tr><td>1</td><td>True</td><td>1</td><td>2.2</td><td>2</td><td>"aaa"</td><td>1</td><td>True</td><td>2</td><td>True</td><td>3</td><td>3.3</td></tr> <tr><td>3</td><td>True</td><td>2</td><td>2.2</td><td>4</td><td>"bbb"</td><td>2</td><td>False</td><td>3</td><td>True</td><td>6</td><td>6.6</td></tr> <tr><td>5</td><td> False </td><td>3</td><td>2.1</td><td>6</td><td>"ccc"</td><td>4</td><td>True</td><td>4</td><td>True</td><td>8</td><td>8.8</td></tr> <tr><td>7</td><td> True </td><td>4</td><td>2.0</td><td>8</td><td>"ddd"</td><td>5</td><td>False</td><td>6</td><td>True</td><td>9</td><td>9.9</td></tr></table> <span>A set of time-series data</span></center> <p>有两种显示方法：</p> <h4 id="默认方式"><a href="#默认方式" class="header-anchor">#</a> 默认方式</h4> <p>将创建两列来存储设备的完整路径：time（LongType）和delta_object（StringType）。</p> <ul><li><code>time</code> : Timestamp, LongType</li> <li><code>delta_object</code> : Delta_object ID, StringType</li></ul> <p>接下来，为每个度量创建一列以存储特定数据。 SparkSQL表结构如下：</p> <center><table style="text-align:center;"><tr><th>time(LongType)</th><th> delta\_object(StringType)</th><th>status(BooleanType)</th><th>temperature(FloatType)</th><th>hardware(StringType)</th></tr> <tr><td>1</td><td> root.ln.wf01.wt01 </td><td>True</td><td>2.2</td><td>null</td></tr> <tr><td>1</td><td> root.ln.wf02.wt02 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>2</td><td> root.ln.wf01.wt01 </td><td>null</td><td>2.2</td><td>null</td></tr> <tr><td>2</td><td> root.ln.wf02.wt02 </td><td>False</td><td>null</td><td>"aaa"</td></tr> <tr><td>2</td><td> root.sgcc.wf03.wt01 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>3</td><td> root.ln.wf01.wt01 </td><td>True</td><td>2.1</td><td>null</td></tr> <tr><td>3</td><td> root.sgcc.wf03.wt01 </td><td>True</td><td>3.3</td><td>null</td></tr> <tr><td>4</td><td> root.ln.wf01.wt01 </td><td>null</td><td>2.0</td><td>null</td></tr> <tr><td>4</td><td> root.ln.wf02.wt02 </td><td>True</td><td>null</td><td>"bbb"</td></tr> <tr><td>4</td><td> root.sgcc.wf03.wt01 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>5</td><td> root.ln.wf01.wt01 </td><td>False</td><td>null</td><td>null</td></tr> <tr><td>5</td><td> root.ln.wf02.wt02 </td><td>False</td><td>null</td><td>null</td></tr> <tr><td>5</td><td> root.sgcc.wf03.wt01 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>6</td><td> root.ln.wf02.wt02 </td><td>null</td><td>null</td><td>"ccc"</td></tr> <tr><td>6</td><td> root.sgcc.wf03.wt01 </td><td>null</td><td>6.6</td><td>null</td></tr> <tr><td>7</td><td> root.ln.wf01.wt01 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>8</td><td> root.ln.wf02.wt02 </td><td>null</td><td>null</td><td>"ddd"</td></tr> <tr><td>8</td><td> root.sgcc.wf03.wt01 </td><td>null</td><td>8.8</td><td>null</td></tr> <tr><td>9</td><td> root.sgcc.wf03.wt01 </td><td>null</td><td>9.9</td><td>null</td></tr></table></center> <h4 id="展开delta-object列"><a href="#展开delta-object列" class="header-anchor">#</a> 展开delta_object列</h4> <p>用“。”展开设备列。 分成多个列，忽略根目录“ root”。 方便进行更丰富的聚合操作。 如果用户希望使用这种显示方式，则需要在表创建语句中设置参数“ delta \ _object \ _name”（请参阅本手册第5.1节中的示例5），如本示例中的那样，参数“ delta \ _object \ _name“设置为” root.device.turbine“。 路径层的数量必须是一对一的。 此时，将为设备路径的每一层（“根”层除外）创建一列。 列名是参数中的名称，值是设备相应层的名称。 接下来，将为每个度量创建一列以存储特定数据。</p> <p>然后，SparkSQL表结构如下：</p> <center><table style="text-align:center;"><tr><th>time(LongType)</th><th> group(StringType)</th><th> field(StringType)</th><th> device(StringType)</th><th>status(BooleanType)</th><th>temperature(FloatType)</th><th>hardware(StringType)</th></tr> <tr><td>1</td><td> ln </td><td> wf01 </td><td> wt01 </td><td>True</td><td>2.2</td><td>null</td></tr> <tr><td>1</td><td> ln </td><td> wf02 </td><td> wt02 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>2</td><td> ln </td><td> wf01 </td><td> wt01 </td><td>null</td><td>2.2</td><td>null</td></tr> <tr><td>2</td><td> ln </td><td> wf02 </td><td> wt02 </td><td>False</td><td>null</td><td>"aaa"</td></tr> <tr><td>2</td><td> sgcc </td><td> wf03 </td><td> wt01 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>3</td><td> ln </td><td> wf01 </td><td> wt01 </td><td>True</td><td>2.1</td><td>null</td></tr> <tr><td>3</td><td> sgcc </td><td> wf03 </td><td> wt01 </td><td>True</td><td>3.3</td><td>null</td></tr> <tr><td>4</td><td> ln </td><td> wf01 </td><td> wt01 </td><td>null</td><td>2.0</td><td>null</td></tr> <tr><td>4</td><td> ln </td><td> wf02 </td><td> wt02 </td><td>True</td><td>null</td><td>"bbb"</td></tr> <tr><td>4</td><td> sgcc </td><td> wf03 </td><td> wt01 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>5</td><td> ln </td><td> wf01 </td><td> wt01 </td><td>False</td><td>null</td><td>null</td></tr> <tr><td>5</td><td> ln </td><td> wf02 </td><td> wt02 </td><td>False</td><td>null</td><td>null</td></tr> <tr><td>5</td><td> sgcc </td><td> wf03 </td><td> wt01 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>6</td><td> ln </td><td> wf02 </td><td> wt02 </td><td>null</td><td>null</td><td>"ccc"</td></tr> <tr><td>6</td><td> sgcc </td><td> wf03 </td><td> wt01 </td><td>null</td><td>6.6</td><td>null</td></tr> <tr><td>7</td><td> ln </td><td> wf01 </td><td> wt01 </td><td>True</td><td>null</td><td>null</td></tr> <tr><td>8</td><td> ln </td><td> wf02 </td><td> wt02 </td><td>null</td><td>null</td><td>"ddd"</td></tr> <tr><td>8</td><td> sgcc </td><td> wf03 </td><td> wt01 </td><td>null</td><td>8.8</td><td>null</td></tr> <tr><td>9</td><td> sgcc </td><td> wf03 </td><td> wt01 </td><td>null</td><td>9.9</td><td>null</td></tr></table></center> <p>TsFile-Spark-Connector可以在SparkSQL By SparkSQL中将一个或多个TsFiles显示为表。 它还允许用户指定一个目录或使用通配符来匹配多个目录。 如果有多个TsFile，则所有TsFile中的度量的并集将保留在表中，并且具有相同名称的度量默认情况下将具有相同的数据类型。 请注意，如果存在名称相同但数据类型不同的情况，则TsFile-Spark-Connector将无法保证结果的正确性。</p> <p>写入过程是将一个DataFrame写入一个或多个TsFiles。 默认情况下，需要包括两列：time和delta_object。 其余的列用作“度量”。 如果用户想将第二个表结构写回到TsFile，则可以设置“ delta \ _object \ _name”参数（请参阅本手册5.1节的5.1节）。</p> <h2 id="附录b-旧注"><a href="#附录b-旧注" class="header-anchor">#</a> 附录B：旧注</h2> <p>注意：检查Spark根目录中的jar软件包，并分别用libthrift-0.9.1.jar和libfb303-0.9.1.jar替换libthrift-0.9.3.jar和libfb303-0.9.3.jar。</p></div> <div class="page-nav"><p class="inner"><span class="prev"> |
| ← |
| <a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/2-MapReduce TsFile.html" class="prev"> |
| MapReduce TsFile |
| </a></span> <span class="next"><a href="/zh/UserGuide/V0.9.x/7-Ecosystem Integration/4-Spark IoTDB.html"> |
| Spark IoTDB |
| </a> |
| → |
| </span></p></div> <p style="text-align: center;">Copyright © 2020 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.2ee94be6.js" defer></script><script src="/assets/js/3.49f0f20a.js" defer></script><script src="/assets/js/519.81cf792a.js" defer></script> |
| </body> |
| </html> |
