| <!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.c79f5191.css" as="style"><link rel="preload" href="/assets/js/app.150a3d30.js" as="script"><link rel="preload" href="/assets/js/3.96a076a8.js" as="script"><link rel="preload" href="/assets/js/4.a65360c5.js" as="script"><link rel="preload" href="/assets/js/646.456054a7.js" as="script"><link rel="prefetch" href="/assets/js/10.9afb0814.js"><link rel="prefetch" href="/assets/js/100.af381a82.js"><link rel="prefetch" href="/assets/js/101.48333335.js"><link rel="prefetch" href="/assets/js/102.0c3cc894.js"><link rel="prefetch" href="/assets/js/103.a49d810c.js"><link rel="prefetch" href="/assets/js/104.8bee529c.js"><link rel="prefetch" href="/assets/js/105.36d3f834.js"><link rel="prefetch" href="/assets/js/106.8902c844.js"><link rel="prefetch" href="/assets/js/107.04fb3d26.js"><link rel="prefetch" href="/assets/js/108.207f1626.js"><link rel="prefetch" href="/assets/js/109.ce41e6ee.js"><link rel="prefetch" href="/assets/js/11.e6c21699.js"><link rel="prefetch" href="/assets/js/110.df86daa1.js"><link rel="prefetch" href="/assets/js/111.c053c3a7.js"><link rel="prefetch" href="/assets/js/112.1f92e6d5.js"><link rel="prefetch" href="/assets/js/113.c10a1424.js"><link rel="prefetch" href="/assets/js/114.11bce2f0.js"><link rel="prefetch" href="/assets/js/115.528cda1d.js"><link rel="prefetch" href="/assets/js/116.763ead1d.js"><link rel="prefetch" href="/assets/js/117.34441361.js"><link rel="prefetch" href="/assets/js/118.c2814fb8.js"><link rel="prefetch" href="/assets/js/119.9cb28ed2.js"><link rel="prefetch" href="/assets/js/12.26a10771.js"><link rel="prefetch" href="/assets/js/120.284d437e.js"><link rel="prefetch" href="/assets/js/121.e260fdd5.js"><link rel="prefetch" href="/assets/js/122.8b9eeb18.js"><link rel="prefetch" href="/assets/js/123.66aea25f.js"><link rel="prefetch" href="/assets/js/124.98088358.js"><link rel="prefetch" href="/assets/js/125.670b8f46.js"><link rel="prefetch" href="/assets/js/126.e27b939f.js"><link rel="prefetch" href="/assets/js/127.e2174de8.js"><link rel="prefetch" href="/assets/js/128.be400387.js"><link rel="prefetch" href="/assets/js/129.ecc36529.js"><link rel="prefetch" href="/assets/js/13.15f5baec.js"><link rel="prefetch" href="/assets/js/130.e4ba4653.js"><link rel="prefetch" href="/assets/js/131.c7f4eeb7.js"><link rel="prefetch" href="/assets/js/132.13c30a00.js"><link rel="prefetch" href="/assets/js/133.144beb94.js"><link rel="prefetch" href="/assets/js/134.2f28174c.js"><link rel="prefetch" href="/assets/js/135.a5b90019.js"><link rel="prefetch" href="/assets/js/136.778020e6.js"><link rel="prefetch" href="/assets/js/137.99f730ef.js"><link rel="prefetch" href="/assets/js/138.98781e3d.js"><link rel="prefetch" href="/assets/js/139.781af6f3.js"><link rel="prefetch" href="/assets/js/14.a526cf0d.js"><link rel="prefetch" href="/assets/js/140.822b8074.js"><link rel="prefetch" href="/assets/js/141.20b83742.js"><link rel="prefetch" href="/assets/js/142.530ac198.js"><link rel="prefetch" href="/assets/js/143.dd87b7e6.js"><link rel="prefetch" href="/assets/js/144.844e572a.js"><link rel="prefetch" href="/assets/js/145.e5c77329.js"><link rel="prefetch" href="/assets/js/146.4a7ae59b.js"><link rel="prefetch" href="/assets/js/147.a36d24ee.js"><link rel="prefetch" href="/assets/js/148.d5237710.js"><link rel="prefetch" href="/assets/js/149.0140fefc.js"><link rel="prefetch" href="/assets/js/15.b8d48dd6.js"><link rel="prefetch" href="/assets/js/150.40cf45ea.js"><link rel="prefetch" href="/assets/js/151.bc1a5f4a.js"><link rel="prefetch" href="/assets/js/152.70704187.js"><link rel="prefetch" href="/assets/js/153.5ac6bb17.js"><link rel="prefetch" href="/assets/js/154.ab6bebcf.js"><link rel="prefetch" href="/assets/js/155.5b50c888.js"><link rel="prefetch" href="/assets/js/156.8c5d0506.js"><link rel="prefetch" href="/assets/js/157.92c5a429.js"><link rel="prefetch" href="/assets/js/158.6fa4828c.js"><link rel="prefetch" href="/assets/js/159.dad828da.js"><link rel="prefetch" href="/assets/js/16.22ec18ce.js"><link rel="prefetch" href="/assets/js/160.de548190.js"><link rel="prefetch" href="/assets/js/161.6ba35dd2.js"><link rel="prefetch" href="/assets/js/162.64aec67d.js"><link rel="prefetch" href="/assets/js/163.ac66ae3c.js"><link rel="prefetch" href="/assets/js/164.9f666631.js"><link rel="prefetch" href="/assets/js/165.4e5bd458.js"><link rel="prefetch" href="/assets/js/166.0aa8b0f4.js"><link rel="prefetch" href="/assets/js/167.dfa60ab3.js"><link rel="prefetch" href="/assets/js/168.a2b08bc6.js"><link rel="prefetch" href="/assets/js/169.79bf8b2d.js"><link rel="prefetch" href="/assets/js/17.eb113894.js"><link rel="prefetch" href="/assets/js/170.851fd688.js"><link rel="prefetch" href="/assets/js/171.fc20c330.js"><link rel="prefetch" href="/assets/js/172.0f8c2891.js"><link rel="prefetch" href="/assets/js/173.ec01b740.js"><link rel="prefetch" href="/assets/js/174.a3d1d693.js"><link rel="prefetch" href="/assets/js/175.15c0a659.js"><link rel="prefetch" href="/assets/js/176.dd7027bf.js"><link rel="prefetch" href="/assets/js/177.49e0584d.js"><link rel="prefetch" href="/assets/js/178.00bff1e4.js"><link rel="prefetch" href="/assets/js/179.002322c9.js"><link rel="prefetch" href="/assets/js/18.268b0005.js"><link rel="prefetch" href="/assets/js/180.a7abb866.js"><link rel="prefetch" href="/assets/js/181.52afb246.js"><link rel="prefetch" href="/assets/js/182.af025d86.js"><link rel="prefetch" href="/assets/js/183.718514b3.js"><link rel="prefetch" href="/assets/js/184.765cd602.js"><link rel="prefetch" href="/assets/js/185.b90b2c4b.js"><link rel="prefetch" href="/assets/js/186.6bb5c726.js"><link rel="prefetch" href="/assets/js/187.cf2d1963.js"><link rel="prefetch" href="/assets/js/188.1a21c282.js"><link rel="prefetch" href="/assets/js/189.6011e8e6.js"><link rel="prefetch" href="/assets/js/19.554dfad4.js"><link rel="prefetch" href="/assets/js/190.3c06913e.js"><link rel="prefetch" href="/assets/js/191.8adbbe16.js"><link rel="prefetch" href="/assets/js/192.017dd4e6.js"><link rel="prefetch" href="/assets/js/193.7ccaec75.js"><link rel="prefetch" href="/assets/js/194.8f9041de.js"><link rel="prefetch" href="/assets/js/195.fd720578.js"><link rel="prefetch" href="/assets/js/196.96bcf363.js"><link rel="prefetch" href="/assets/js/197.cd9b0c3a.js"><link rel="prefetch" href="/assets/js/198.d7d53c65.js"><link rel="prefetch" href="/assets/js/199.231713be.js"><link rel="prefetch" href="/assets/js/20.4b3311fd.js"><link rel="prefetch" href="/assets/js/200.7a7d4178.js"><link rel="prefetch" href="/assets/js/201.2ba7d87e.js"><link rel="prefetch" href="/assets/js/202.aeecfa26.js"><link rel="prefetch" href="/assets/js/203.31d144e8.js"><link rel="prefetch" href="/assets/js/204.a435a4df.js"><link rel="prefetch" href="/assets/js/205.bdb53d1c.js"><link rel="prefetch" href="/assets/js/206.127ef777.js"><link rel="prefetch" href="/assets/js/207.b98cce82.js"><link rel="prefetch" href="/assets/js/208.17f8c242.js"><link rel="prefetch" href="/assets/js/209.7537428f.js"><link rel="prefetch" href="/assets/js/21.c90f33d7.js"><link rel="prefetch" href="/assets/js/210.bb097df5.js"><link rel="prefetch" href="/assets/js/211.58f61280.js"><link rel="prefetch" href="/assets/js/212.2a8a092d.js"><link rel="prefetch" href="/assets/js/213.27b01fce.js"><link rel="prefetch" href="/assets/js/214.20fc09c1.js"><link rel="prefetch" href="/assets/js/215.6a5be256.js"><link rel="prefetch" href="/assets/js/216.0898f799.js"><link rel="prefetch" href="/assets/js/217.4a74ae6f.js"><link rel="prefetch" href="/assets/js/218.aba2c019.js"><link rel="prefetch" href="/assets/js/219.7a59585f.js"><link rel="prefetch" href="/assets/js/22.7a1f06fe.js"><link rel="prefetch" href="/assets/js/220.ed26afb4.js"><link rel="prefetch" href="/assets/js/221.2a04d9af.js"><link rel="prefetch" href="/assets/js/222.88ff1449.js"><link rel="prefetch" href="/assets/js/223.e0731710.js"><link rel="prefetch" href="/assets/js/224.d4234a51.js"><link rel="prefetch" href="/assets/js/225.781fbf0c.js"><link rel="prefetch" href="/assets/js/226.b4a6eadb.js"><link rel="prefetch" href="/assets/js/227.e474974a.js"><link rel="prefetch" href="/assets/js/228.9cf4477d.js"><link rel="prefetch" href="/assets/js/229.770de8aa.js"><link rel="prefetch" href="/assets/js/23.67190bee.js"><link rel="prefetch" href="/assets/js/230.38a49e3f.js"><link rel="prefetch" href="/assets/js/231.d568c4d5.js"><link rel="prefetch" href="/assets/js/232.166bfa5d.js"><link rel="prefetch" href="/assets/js/233.53776299.js"><link rel="prefetch" href="/assets/js/234.893211e1.js"><link rel="prefetch" href="/assets/js/235.98e38acf.js"><link rel="prefetch" href="/assets/js/236.d975a1d2.js"><link rel="prefetch" href="/assets/js/237.ea10ef6b.js"><link rel="prefetch" href="/assets/js/238.af5a633b.js"><link rel="prefetch" href="/assets/js/239.57483628.js"><link rel="prefetch" href="/assets/js/24.d99ae084.js"><link rel="prefetch" href="/assets/js/240.8c8b0bca.js"><link rel="prefetch" href="/assets/js/241.4dd02a1f.js"><link rel="prefetch" href="/assets/js/242.7581d50b.js"><link rel="prefetch" href="/assets/js/243.8020ea53.js"><link rel="prefetch" href="/assets/js/244.37b38c56.js"><link rel="prefetch" href="/assets/js/245.99393763.js"><link rel="prefetch" href="/assets/js/246.b06e6e3c.js"><link rel="prefetch" href="/assets/js/247.638b4d9a.js"><link rel="prefetch" href="/assets/js/248.536526ef.js"><link rel="prefetch" href="/assets/js/249.fd9ae868.js"><link rel="prefetch" href="/assets/js/25.06c13d3c.js"><link rel="prefetch" href="/assets/js/250.d34aa7ca.js"><link rel="prefetch" href="/assets/js/251.bee51cc9.js"><link rel="prefetch" href="/assets/js/252.d05db63c.js"><link rel="prefetch" href="/assets/js/253.1d1d3f0d.js"><link rel="prefetch" href="/assets/js/254.c03b32fe.js"><link rel="prefetch" href="/assets/js/255.96af022a.js"><link rel="prefetch" href="/assets/js/256.ae0db25f.js"><link rel="prefetch" href="/assets/js/257.a1ce9d72.js"><link rel="prefetch" href="/assets/js/258.8e6e0acb.js"><link rel="prefetch" href="/assets/js/259.cace667d.js"><link rel="prefetch" href="/assets/js/26.960d4740.js"><link rel="prefetch" href="/assets/js/260.4ad02a23.js"><link rel="prefetch" href="/assets/js/261.65705a16.js"><link rel="prefetch" href="/assets/js/262.c1701c29.js"><link rel="prefetch" href="/assets/js/263.827ffcc8.js"><link rel="prefetch" href="/assets/js/264.da67695a.js"><link rel="prefetch" href="/assets/js/265.cc127de2.js"><link rel="prefetch" href="/assets/js/266.eb1a8f54.js"><link rel="prefetch" href="/assets/js/267.5a9302f2.js"><link rel="prefetch" href="/assets/js/268.77576299.js"><link rel="prefetch" href="/assets/js/269.c502d05d.js"><link rel="prefetch" href="/assets/js/27.70f7dc1a.js"><link rel="prefetch" href="/assets/js/270.e5ee9893.js"><link rel="prefetch" href="/assets/js/271.72666635.js"><link rel="prefetch" href="/assets/js/272.cee600f4.js"><link rel="prefetch" href="/assets/js/273.d56fdf7a.js"><link rel="prefetch" href="/assets/js/274.6d98103d.js"><link rel="prefetch" href="/assets/js/275.8ba6ba62.js"><link rel="prefetch" href="/assets/js/276.fedf9586.js"><link rel="prefetch" href="/assets/js/277.63502fbf.js"><link rel="prefetch" href="/assets/js/278.fa0cf0cb.js"><link rel="prefetch" href="/assets/js/279.c1e5ae29.js"><link rel="prefetch" href="/assets/js/28.830d54da.js"><link rel="prefetch" href="/assets/js/280.d5f0dac6.js"><link rel="prefetch" href="/assets/js/281.cb43a1c2.js"><link rel="prefetch" href="/assets/js/282.197d5892.js"><link rel="prefetch" href="/assets/js/283.ed1f376b.js"><link rel="prefetch" href="/assets/js/284.7f612c82.js"><link rel="prefetch" href="/assets/js/285.25425d04.js"><link rel="prefetch" href="/assets/js/286.452285ab.js"><link rel="prefetch" href="/assets/js/287.be955f5e.js"><link rel="prefetch" href="/assets/js/288.16a3e78c.js"><link rel="prefetch" href="/assets/js/289.8b6d8bfb.js"><link rel="prefetch" href="/assets/js/29.1b108016.js"><link rel="prefetch" href="/assets/js/290.4b148797.js"><link rel="prefetch" href="/assets/js/291.b62aac54.js"><link rel="prefetch" href="/assets/js/292.7e57c52e.js"><link rel="prefetch" href="/assets/js/293.f6dfbee6.js"><link rel="prefetch" href="/assets/js/294.2d922951.js"><link rel="prefetch" href="/assets/js/295.1917bfde.js"><link rel="prefetch" href="/assets/js/296.d6fa961c.js"><link rel="prefetch" href="/assets/js/297.c787acaf.js"><link rel="prefetch" href="/assets/js/298.d558df1b.js"><link rel="prefetch" href="/assets/js/299.e77a794b.js"><link rel="prefetch" href="/assets/js/30.b06debf2.js"><link rel="prefetch" href="/assets/js/300.bdfdc245.js"><link rel="prefetch" href="/assets/js/301.030c03f2.js"><link rel="prefetch" href="/assets/js/302.af97980a.js"><link rel="prefetch" href="/assets/js/303.f1971e49.js"><link rel="prefetch" href="/assets/js/304.0494314e.js"><link rel="prefetch" href="/assets/js/305.4a4f3e67.js"><link rel="prefetch" href="/assets/js/306.572ff5ba.js"><link rel="prefetch" href="/assets/js/307.016778c9.js"><link rel="prefetch" href="/assets/js/308.b1d4a83e.js"><link rel="prefetch" href="/assets/js/309.40c22ea7.js"><link rel="prefetch" href="/assets/js/31.abfdfce0.js"><link rel="prefetch" href="/assets/js/310.03604f1e.js"><link rel="prefetch" href="/assets/js/311.85a79804.js"><link rel="prefetch" href="/assets/js/312.350317ac.js"><link rel="prefetch" href="/assets/js/313.afd1a236.js"><link rel="prefetch" href="/assets/js/314.2eff0e13.js"><link rel="prefetch" href="/assets/js/315.32c84a51.js"><link rel="prefetch" href="/assets/js/316.ec650494.js"><link rel="prefetch" href="/assets/js/317.0fe7aa7f.js"><link rel="prefetch" href="/assets/js/318.bfe08f78.js"><link rel="prefetch" href="/assets/js/319.066bddbe.js"><link rel="prefetch" href="/assets/js/32.386fc03f.js"><link rel="prefetch" href="/assets/js/320.847e2d08.js"><link rel="prefetch" href="/assets/js/321.b352336f.js"><link rel="prefetch" href="/assets/js/322.603be18c.js"><link rel="prefetch" href="/assets/js/323.d5f6e667.js"><link rel="prefetch" href="/assets/js/324.ca18024b.js"><link rel="prefetch" href="/assets/js/325.6b1f9b6d.js"><link rel="prefetch" href="/assets/js/326.ea44500d.js"><link rel="prefetch" href="/assets/js/327.7bbcead6.js"><link rel="prefetch" href="/assets/js/328.c888f4f7.js"><link rel="prefetch" href="/assets/js/329.9ca35978.js"><link rel="prefetch" href="/assets/js/33.746055ec.js"><link rel="prefetch" href="/assets/js/330.57eaedf7.js"><link rel="prefetch" href="/assets/js/331.059af8f9.js"><link rel="prefetch" href="/assets/js/332.02bb2d02.js"><link rel="prefetch" href="/assets/js/333.b48bd3ca.js"><link rel="prefetch" href="/assets/js/334.214d40f6.js"><link rel="prefetch" href="/assets/js/335.737b8fc6.js"><link rel="prefetch" href="/assets/js/336.82c9bb00.js"><link rel="prefetch" href="/assets/js/337.b2130ccd.js"><link rel="prefetch" href="/assets/js/338.20e0b21e.js"><link rel="prefetch" href="/assets/js/339.7dadde3e.js"><link rel="prefetch" href="/assets/js/34.a590f0ae.js"><link rel="prefetch" href="/assets/js/340.75521c26.js"><link rel="prefetch" href="/assets/js/341.5e8dcd40.js"><link rel="prefetch" href="/assets/js/342.a5d2334a.js"><link rel="prefetch" href="/assets/js/343.4dfe4df5.js"><link rel="prefetch" href="/assets/js/344.51304626.js"><link rel="prefetch" href="/assets/js/345.36f7054e.js"><link rel="prefetch" href="/assets/js/346.cf308144.js"><link rel="prefetch" href="/assets/js/347.ef554007.js"><link rel="prefetch" href="/assets/js/348.99790f23.js"><link rel="prefetch" href="/assets/js/349.95f43e58.js"><link rel="prefetch" href="/assets/js/35.135cd75d.js"><link rel="prefetch" href="/assets/js/350.b5ea1eaa.js"><link rel="prefetch" href="/assets/js/351.89fa8c55.js"><link rel="prefetch" href="/assets/js/352.8c16b8ca.js"><link rel="prefetch" href="/assets/js/353.d21f105a.js"><link rel="prefetch" href="/assets/js/354.0aaddf4b.js"><link rel="prefetch" href="/assets/js/355.dd051989.js"><link rel="prefetch" href="/assets/js/356.faf1af8d.js"><link rel="prefetch" href="/assets/js/357.75c04705.js"><link rel="prefetch" href="/assets/js/358.ca3a90b8.js"><link rel="prefetch" href="/assets/js/359.855fba63.js"><link rel="prefetch" href="/assets/js/36.1b76e309.js"><link rel="prefetch" href="/assets/js/360.27218a17.js"><link rel="prefetch" href="/assets/js/361.effdafc4.js"><link rel="prefetch" href="/assets/js/362.ded22ed8.js"><link rel="prefetch" href="/assets/js/363.3470fd83.js"><link rel="prefetch" href="/assets/js/364.33cb94a1.js"><link rel="prefetch" href="/assets/js/365.4aeceb03.js"><link rel="prefetch" href="/assets/js/366.79ed763f.js"><link rel="prefetch" href="/assets/js/367.134d2beb.js"><link rel="prefetch" href="/assets/js/368.09c105ad.js"><link rel="prefetch" href="/assets/js/369.c292fc98.js"><link rel="prefetch" href="/assets/js/37.a06e01b7.js"><link rel="prefetch" href="/assets/js/370.d255386a.js"><link rel="prefetch" href="/assets/js/371.f4050548.js"><link rel="prefetch" href="/assets/js/372.1fdb1993.js"><link rel="prefetch" href="/assets/js/373.3d57762c.js"><link rel="prefetch" href="/assets/js/374.d1ccedfb.js"><link rel="prefetch" href="/assets/js/375.f9623d87.js"><link rel="prefetch" href="/assets/js/376.b35ee886.js"><link rel="prefetch" href="/assets/js/377.351393c2.js"><link rel="prefetch" href="/assets/js/378.abdf8b8c.js"><link rel="prefetch" href="/assets/js/379.84c2d7d5.js"><link rel="prefetch" href="/assets/js/38.9642b95b.js"><link rel="prefetch" href="/assets/js/380.9521cee5.js"><link rel="prefetch" href="/assets/js/381.fa77edfe.js"><link rel="prefetch" href="/assets/js/382.7fcaa731.js"><link rel="prefetch" href="/assets/js/383.1622cdc3.js"><link rel="prefetch" href="/assets/js/384.36db2c6e.js"><link rel="prefetch" href="/assets/js/385.4b730b34.js"><link rel="prefetch" href="/assets/js/386.c79395af.js"><link rel="prefetch" href="/assets/js/387.a4b0b0f9.js"><link rel="prefetch" href="/assets/js/388.ae2a8aeb.js"><link rel="prefetch" href="/assets/js/389.6c75c596.js"><link rel="prefetch" href="/assets/js/39.22df932f.js"><link rel="prefetch" href="/assets/js/390.270f48d0.js"><link rel="prefetch" href="/assets/js/391.4a8a9d82.js"><link rel="prefetch" href="/assets/js/392.7fe0d095.js"><link rel="prefetch" href="/assets/js/393.f1509b7e.js"><link rel="prefetch" href="/assets/js/394.21cd1b25.js"><link rel="prefetch" href="/assets/js/395.f2d42973.js"><link rel="prefetch" href="/assets/js/396.e5a103f4.js"><link rel="prefetch" href="/assets/js/397.8f1f4f18.js"><link rel="prefetch" href="/assets/js/398.45f67cf6.js"><link rel="prefetch" href="/assets/js/399.58b103d5.js"><link rel="prefetch" href="/assets/js/40.f10ebd42.js"><link rel="prefetch" href="/assets/js/400.7fca70bc.js"><link rel="prefetch" href="/assets/js/401.457e4e30.js"><link rel="prefetch" href="/assets/js/402.13d27406.js"><link rel="prefetch" href="/assets/js/403.28b9c70f.js"><link rel="prefetch" href="/assets/js/404.cbce41d9.js"><link rel="prefetch" href="/assets/js/405.cf33ac0b.js"><link rel="prefetch" href="/assets/js/406.e2735a9f.js"><link rel="prefetch" href="/assets/js/407.3f414c87.js"><link rel="prefetch" href="/assets/js/408.fb4c8562.js"><link rel="prefetch" href="/assets/js/409.20859a6a.js"><link rel="prefetch" href="/assets/js/41.c6ba31e8.js"><link rel="prefetch" href="/assets/js/410.e5b3a8b2.js"><link rel="prefetch" href="/assets/js/411.7c692a9f.js"><link rel="prefetch" href="/assets/js/412.ba646dd4.js"><link rel="prefetch" href="/assets/js/413.223b8db3.js"><link rel="prefetch" href="/assets/js/414.1b9eb6ed.js"><link rel="prefetch" href="/assets/js/415.e5e0c1f2.js"><link rel="prefetch" href="/assets/js/416.1a5511af.js"><link rel="prefetch" href="/assets/js/417.2157e276.js"><link rel="prefetch" href="/assets/js/418.31e27bc7.js"><link rel="prefetch" href="/assets/js/419.21185a8c.js"><link rel="prefetch" href="/assets/js/42.0bec1f12.js"><link rel="prefetch" href="/assets/js/420.e1bdae6b.js"><link rel="prefetch" href="/assets/js/421.d23db67d.js"><link rel="prefetch" href="/assets/js/422.863655c3.js"><link rel="prefetch" href="/assets/js/423.2331efd1.js"><link rel="prefetch" href="/assets/js/424.c49bf601.js"><link rel="prefetch" href="/assets/js/425.57b9fa7a.js"><link rel="prefetch" href="/assets/js/426.06be7ab4.js"><link rel="prefetch" href="/assets/js/427.3d3d3823.js"><link rel="prefetch" href="/assets/js/428.41c85071.js"><link rel="prefetch" href="/assets/js/429.5fe617b2.js"><link rel="prefetch" href="/assets/js/43.4193f196.js"><link rel="prefetch" href="/assets/js/430.d133d3b6.js"><link rel="prefetch" href="/assets/js/431.902d4b9c.js"><link rel="prefetch" href="/assets/js/432.a19c1786.js"><link rel="prefetch" href="/assets/js/433.3266bbe4.js"><link rel="prefetch" href="/assets/js/434.65d855ed.js"><link rel="prefetch" href="/assets/js/435.14b85953.js"><link rel="prefetch" href="/assets/js/436.106d5e31.js"><link rel="prefetch" href="/assets/js/437.a1bc9b09.js"><link rel="prefetch" href="/assets/js/438.6a91ec48.js"><link rel="prefetch" href="/assets/js/439.0b848bcd.js"><link rel="prefetch" href="/assets/js/44.0e2c101c.js"><link rel="prefetch" href="/assets/js/440.71b9a612.js"><link rel="prefetch" href="/assets/js/441.27d36f94.js"><link rel="prefetch" href="/assets/js/442.2b200a2e.js"><link rel="prefetch" href="/assets/js/443.c113db42.js"><link rel="prefetch" href="/assets/js/444.8a821b02.js"><link rel="prefetch" href="/assets/js/445.69e776af.js"><link rel="prefetch" href="/assets/js/446.9424c2d8.js"><link rel="prefetch" href="/assets/js/447.93003309.js"><link rel="prefetch" href="/assets/js/448.68647159.js"><link rel="prefetch" href="/assets/js/449.4e699a36.js"><link rel="prefetch" href="/assets/js/45.906f0670.js"><link rel="prefetch" href="/assets/js/450.0c436dbd.js"><link rel="prefetch" href="/assets/js/451.e3703771.js"><link rel="prefetch" href="/assets/js/452.bcda8552.js"><link rel="prefetch" href="/assets/js/453.e8bf8887.js"><link rel="prefetch" href="/assets/js/454.cfad4fae.js"><link rel="prefetch" href="/assets/js/455.f8bda945.js"><link rel="prefetch" href="/assets/js/456.9260cf29.js"><link rel="prefetch" href="/assets/js/457.96ab8141.js"><link rel="prefetch" href="/assets/js/458.14de9202.js"><link rel="prefetch" href="/assets/js/459.ee0d815f.js"><link rel="prefetch" href="/assets/js/46.1d25bb03.js"><link rel="prefetch" href="/assets/js/460.e4457a3e.js"><link rel="prefetch" href="/assets/js/461.4e20b7b5.js"><link rel="prefetch" href="/assets/js/462.f4bf43ba.js"><link rel="prefetch" href="/assets/js/463.0748a80e.js"><link rel="prefetch" href="/assets/js/464.53a27dd7.js"><link rel="prefetch" href="/assets/js/465.a4acd1af.js"><link rel="prefetch" href="/assets/js/466.df090992.js"><link rel="prefetch" href="/assets/js/467.b16a86c8.js"><link rel="prefetch" href="/assets/js/468.6a2925c4.js"><link rel="prefetch" href="/assets/js/469.bde97422.js"><link rel="prefetch" href="/assets/js/47.b4abc3a9.js"><link rel="prefetch" href="/assets/js/470.c098e3ca.js"><link rel="prefetch" href="/assets/js/471.b514ba1c.js"><link rel="prefetch" href="/assets/js/472.c0a5029e.js"><link rel="prefetch" href="/assets/js/473.0816d6de.js"><link rel="prefetch" href="/assets/js/474.dca423db.js"><link rel="prefetch" href="/assets/js/475.0cd7d27f.js"><link rel="prefetch" href="/assets/js/476.671f7b2c.js"><link rel="prefetch" href="/assets/js/477.5afec85f.js"><link rel="prefetch" href="/assets/js/478.456ee291.js"><link rel="prefetch" href="/assets/js/479.ec486138.js"><link rel="prefetch" href="/assets/js/48.d5735fb1.js"><link rel="prefetch" href="/assets/js/480.515ff69b.js"><link rel="prefetch" href="/assets/js/481.f3819ec2.js"><link rel="prefetch" href="/assets/js/482.54aa04d1.js"><link rel="prefetch" href="/assets/js/483.398fde55.js"><link rel="prefetch" href="/assets/js/484.95f23223.js"><link rel="prefetch" href="/assets/js/485.63ffa136.js"><link rel="prefetch" href="/assets/js/486.c76fb274.js"><link rel="prefetch" href="/assets/js/487.2733991b.js"><link rel="prefetch" href="/assets/js/488.d24d37c4.js"><link rel="prefetch" href="/assets/js/489.ad6ad8cb.js"><link rel="prefetch" href="/assets/js/49.f041ca9b.js"><link rel="prefetch" href="/assets/js/490.3720e59a.js"><link rel="prefetch" href="/assets/js/491.e8277c13.js"><link rel="prefetch" href="/assets/js/492.0b099660.js"><link rel="prefetch" href="/assets/js/493.aed218e9.js"><link rel="prefetch" href="/assets/js/494.d1c9814e.js"><link rel="prefetch" href="/assets/js/495.c40e5c0d.js"><link rel="prefetch" href="/assets/js/496.e8d0ddbd.js"><link rel="prefetch" href="/assets/js/497.1025ce49.js"><link rel="prefetch" href="/assets/js/498.8685a6f8.js"><link rel="prefetch" href="/assets/js/499.387e4c41.js"><link rel="prefetch" href="/assets/js/5.eace4687.js"><link rel="prefetch" href="/assets/js/50.d5f95b25.js"><link rel="prefetch" href="/assets/js/500.c3d3f23c.js"><link rel="prefetch" href="/assets/js/501.40523dbb.js"><link rel="prefetch" href="/assets/js/502.e0c00888.js"><link rel="prefetch" href="/assets/js/503.073cc6ef.js"><link rel="prefetch" href="/assets/js/504.21612170.js"><link rel="prefetch" href="/assets/js/505.2b31e14b.js"><link rel="prefetch" href="/assets/js/506.03bd71db.js"><link rel="prefetch" href="/assets/js/507.08ef2c8a.js"><link rel="prefetch" href="/assets/js/508.9639ee84.js"><link rel="prefetch" href="/assets/js/509.51737525.js"><link rel="prefetch" href="/assets/js/51.d15e6446.js"><link rel="prefetch" href="/assets/js/510.2502897d.js"><link rel="prefetch" href="/assets/js/511.89d2c25e.js"><link rel="prefetch" href="/assets/js/512.f4dcd865.js"><link rel="prefetch" href="/assets/js/513.794fa087.js"><link rel="prefetch" href="/assets/js/514.9fe28740.js"><link rel="prefetch" href="/assets/js/515.9058554f.js"><link rel="prefetch" href="/assets/js/516.407c9790.js"><link rel="prefetch" href="/assets/js/517.85975bd0.js"><link rel="prefetch" href="/assets/js/518.00e4e242.js"><link rel="prefetch" href="/assets/js/519.f8a22cbe.js"><link rel="prefetch" href="/assets/js/52.b00654a7.js"><link rel="prefetch" href="/assets/js/520.33769056.js"><link rel="prefetch" href="/assets/js/521.0e1fa632.js"><link rel="prefetch" href="/assets/js/522.6134619e.js"><link rel="prefetch" href="/assets/js/523.5da64aae.js"><link rel="prefetch" href="/assets/js/524.e7b954d0.js"><link rel="prefetch" href="/assets/js/525.7a412451.js"><link rel="prefetch" href="/assets/js/526.5d12978f.js"><link rel="prefetch" href="/assets/js/527.73533cb0.js"><link rel="prefetch" href="/assets/js/528.8b0d61e1.js"><link rel="prefetch" href="/assets/js/529.566e828d.js"><link rel="prefetch" href="/assets/js/53.355eef4b.js"><link rel="prefetch" href="/assets/js/530.3a222133.js"><link rel="prefetch" href="/assets/js/531.f5e2b851.js"><link rel="prefetch" href="/assets/js/532.edaa8a87.js"><link rel="prefetch" href="/assets/js/533.2daeb978.js"><link rel="prefetch" href="/assets/js/534.9d47f4a6.js"><link rel="prefetch" href="/assets/js/535.eb0ce578.js"><link rel="prefetch" href="/assets/js/536.4e9ed498.js"><link rel="prefetch" href="/assets/js/537.708f6016.js"><link rel="prefetch" href="/assets/js/538.21a9740f.js"><link rel="prefetch" href="/assets/js/539.79842b7b.js"><link rel="prefetch" href="/assets/js/54.ae51d1f6.js"><link rel="prefetch" href="/assets/js/540.b5628db5.js"><link rel="prefetch" href="/assets/js/541.cc3c7bf3.js"><link rel="prefetch" href="/assets/js/542.308706eb.js"><link rel="prefetch" href="/assets/js/543.c62fa106.js"><link rel="prefetch" href="/assets/js/544.4328c991.js"><link rel="prefetch" href="/assets/js/545.48999b2a.js"><link rel="prefetch" href="/assets/js/546.f1f8da57.js"><link rel="prefetch" href="/assets/js/547.7b43a913.js"><link rel="prefetch" href="/assets/js/548.1c459864.js"><link rel="prefetch" href="/assets/js/549.c052439d.js"><link rel="prefetch" href="/assets/js/55.cd2a5a2e.js"><link rel="prefetch" href="/assets/js/550.331dd311.js"><link rel="prefetch" href="/assets/js/551.a52cce71.js"><link rel="prefetch" href="/assets/js/552.e2dbac7d.js"><link rel="prefetch" href="/assets/js/553.8bc4e621.js"><link rel="prefetch" href="/assets/js/554.be5b47c5.js"><link rel="prefetch" href="/assets/js/555.f73c61d3.js"><link rel="prefetch" href="/assets/js/556.e721d3d8.js"><link rel="prefetch" href="/assets/js/557.cbb48495.js"><link rel="prefetch" href="/assets/js/558.ec48dcb9.js"><link rel="prefetch" href="/assets/js/559.d68e0c89.js"><link rel="prefetch" href="/assets/js/56.3972fd13.js"><link rel="prefetch" href="/assets/js/560.ca66ac86.js"><link rel="prefetch" href="/assets/js/561.2722f881.js"><link rel="prefetch" href="/assets/js/562.5be8d211.js"><link rel="prefetch" href="/assets/js/563.52d710f5.js"><link rel="prefetch" href="/assets/js/564.f94bb0bd.js"><link rel="prefetch" href="/assets/js/565.32642e9c.js"><link rel="prefetch" href="/assets/js/566.e4996ba1.js"><link rel="prefetch" href="/assets/js/567.807b6f65.js"><link rel="prefetch" href="/assets/js/568.39395163.js"><link rel="prefetch" href="/assets/js/569.ce6d29a6.js"><link rel="prefetch" href="/assets/js/57.0e1aed8c.js"><link rel="prefetch" href="/assets/js/570.5eaff1de.js"><link rel="prefetch" href="/assets/js/571.3ddce2bd.js"><link rel="prefetch" href="/assets/js/572.5f9a6d45.js"><link rel="prefetch" href="/assets/js/573.16834fb7.js"><link rel="prefetch" href="/assets/js/574.0742d701.js"><link rel="prefetch" href="/assets/js/575.b5ae9dd1.js"><link rel="prefetch" href="/assets/js/576.abe5b760.js"><link rel="prefetch" href="/assets/js/577.68ce8edd.js"><link rel="prefetch" href="/assets/js/578.2a48109d.js"><link rel="prefetch" href="/assets/js/579.cb1a78e4.js"><link rel="prefetch" href="/assets/js/58.e5669615.js"><link rel="prefetch" href="/assets/js/580.bf701d4d.js"><link rel="prefetch" href="/assets/js/581.47cbc0d4.js"><link rel="prefetch" href="/assets/js/582.494a2d92.js"><link rel="prefetch" href="/assets/js/583.fb8a687c.js"><link rel="prefetch" href="/assets/js/584.db6f15b5.js"><link rel="prefetch" href="/assets/js/585.5ea6b3e5.js"><link rel="prefetch" href="/assets/js/586.ab5ce50c.js"><link rel="prefetch" href="/assets/js/587.f5f33272.js"><link rel="prefetch" href="/assets/js/588.c1466d25.js"><link rel="prefetch" href="/assets/js/589.df2c521f.js"><link rel="prefetch" href="/assets/js/59.299b0b27.js"><link rel="prefetch" href="/assets/js/590.8fde4565.js"><link rel="prefetch" href="/assets/js/591.ebae3557.js"><link rel="prefetch" href="/assets/js/592.dce57142.js"><link rel="prefetch" href="/assets/js/593.ea31c530.js"><link rel="prefetch" href="/assets/js/594.75078d8e.js"><link rel="prefetch" href="/assets/js/595.91c91388.js"><link rel="prefetch" href="/assets/js/596.f647f12f.js"><link rel="prefetch" href="/assets/js/597.98c3fe10.js"><link rel="prefetch" href="/assets/js/598.0a0bfe0d.js"><link rel="prefetch" href="/assets/js/599.11927d65.js"><link rel="prefetch" href="/assets/js/6.008dd0d6.js"><link rel="prefetch" href="/assets/js/60.7a3eb10d.js"><link rel="prefetch" href="/assets/js/600.599af816.js"><link rel="prefetch" href="/assets/js/601.e05e001b.js"><link rel="prefetch" href="/assets/js/602.4574a400.js"><link rel="prefetch" href="/assets/js/603.f25f60f9.js"><link rel="prefetch" href="/assets/js/604.432b0d89.js"><link rel="prefetch" href="/assets/js/605.97635503.js"><link rel="prefetch" href="/assets/js/606.099c5cc0.js"><link rel="prefetch" href="/assets/js/607.f373dc6f.js"><link rel="prefetch" href="/assets/js/608.9a97fb61.js"><link rel="prefetch" href="/assets/js/609.d644e9f4.js"><link rel="prefetch" href="/assets/js/61.97cd71d2.js"><link rel="prefetch" href="/assets/js/610.ef6f5b50.js"><link rel="prefetch" href="/assets/js/611.fc56c15a.js"><link rel="prefetch" href="/assets/js/612.6c18ff9d.js"><link rel="prefetch" href="/assets/js/613.454523c0.js"><link rel="prefetch" href="/assets/js/614.b99e3acf.js"><link rel="prefetch" href="/assets/js/615.c3fa6c17.js"><link rel="prefetch" href="/assets/js/616.3c376364.js"><link rel="prefetch" href="/assets/js/617.eb95de76.js"><link rel="prefetch" href="/assets/js/618.05e65c70.js"><link rel="prefetch" href="/assets/js/619.1e3bb7bc.js"><link rel="prefetch" href="/assets/js/62.309d2360.js"><link rel="prefetch" href="/assets/js/620.2a493bee.js"><link rel="prefetch" href="/assets/js/621.94f87c1f.js"><link rel="prefetch" href="/assets/js/622.7ae48b4b.js"><link rel="prefetch" href="/assets/js/623.3c371fca.js"><link rel="prefetch" href="/assets/js/624.3baafe90.js"><link rel="prefetch" href="/assets/js/625.5912d2e7.js"><link rel="prefetch" href="/assets/js/626.6821148e.js"><link rel="prefetch" href="/assets/js/627.5823614e.js"><link rel="prefetch" href="/assets/js/628.70d87f62.js"><link rel="prefetch" href="/assets/js/629.ff8d8723.js"><link rel="prefetch" href="/assets/js/63.72ce087d.js"><link rel="prefetch" href="/assets/js/630.9e2ed4f7.js"><link rel="prefetch" href="/assets/js/631.b311c084.js"><link rel="prefetch" href="/assets/js/632.f5887044.js"><link rel="prefetch" href="/assets/js/633.5cfd40ff.js"><link rel="prefetch" href="/assets/js/634.4d1e475f.js"><link rel="prefetch" href="/assets/js/635.ec46017b.js"><link rel="prefetch" href="/assets/js/636.16f35f64.js"><link rel="prefetch" href="/assets/js/637.f3886ccd.js"><link rel="prefetch" href="/assets/js/638.3adc73a1.js"><link rel="prefetch" href="/assets/js/639.2e685514.js"><link rel="prefetch" href="/assets/js/64.002a0314.js"><link rel="prefetch" href="/assets/js/640.311cc5d7.js"><link rel="prefetch" href="/assets/js/641.2682e9c4.js"><link rel="prefetch" href="/assets/js/642.b476da53.js"><link rel="prefetch" href="/assets/js/643.aac8e411.js"><link rel="prefetch" href="/assets/js/644.4f4ac975.js"><link rel="prefetch" href="/assets/js/645.7636ef74.js"><link rel="prefetch" href="/assets/js/647.e278e376.js"><link rel="prefetch" href="/assets/js/648.0ed73224.js"><link rel="prefetch" href="/assets/js/649.5d7983af.js"><link rel="prefetch" href="/assets/js/65.ceafbc3b.js"><link rel="prefetch" href="/assets/js/66.cf550ed0.js"><link rel="prefetch" href="/assets/js/67.fbb16acb.js"><link rel="prefetch" href="/assets/js/68.795e44e8.js"><link rel="prefetch" href="/assets/js/69.7c79f101.js"><link rel="prefetch" href="/assets/js/7.080f75db.js"><link rel="prefetch" href="/assets/js/70.47360ac4.js"><link rel="prefetch" href="/assets/js/71.5297f175.js"><link rel="prefetch" href="/assets/js/72.6dd2294f.js"><link rel="prefetch" href="/assets/js/73.ccaf19fe.js"><link rel="prefetch" href="/assets/js/74.6765e270.js"><link rel="prefetch" href="/assets/js/75.faae1b37.js"><link rel="prefetch" href="/assets/js/76.184c6746.js"><link rel="prefetch" href="/assets/js/77.53e2f632.js"><link rel="prefetch" href="/assets/js/78.acc96819.js"><link rel="prefetch" href="/assets/js/79.3394bd3a.js"><link rel="prefetch" href="/assets/js/8.d214e90e.js"><link rel="prefetch" href="/assets/js/80.c1c43c7e.js"><link rel="prefetch" href="/assets/js/81.3517c2a2.js"><link rel="prefetch" href="/assets/js/82.2f67198d.js"><link rel="prefetch" href="/assets/js/83.20200195.js"><link rel="prefetch" href="/assets/js/84.8b852a85.js"><link rel="prefetch" href="/assets/js/85.9f4cf1b7.js"><link rel="prefetch" href="/assets/js/86.5dfb2da0.js"><link rel="prefetch" href="/assets/js/87.fd79b5e1.js"><link rel="prefetch" href="/assets/js/88.a9577c73.js"><link rel="prefetch" href="/assets/js/89.de6dd42f.js"><link rel="prefetch" href="/assets/js/9.15e59c54.js"><link rel="prefetch" href="/assets/js/90.ef78cdaf.js"><link rel="prefetch" href="/assets/js/91.82080b50.js"><link rel="prefetch" href="/assets/js/92.a2ebe8f3.js"><link rel="prefetch" href="/assets/js/93.0619a7be.js"><link rel="prefetch" href="/assets/js/94.c068c916.js"><link rel="prefetch" href="/assets/js/95.5d813553.js"><link rel="prefetch" href="/assets/js/96.49162df6.js"><link rel="prefetch" href="/assets/js/97.e49a092b.js"><link rel="prefetch" href="/assets/js/98.7d52bcd6.js"><link rel="prefetch" href="/assets/js/99.566e149b.js"><link rel="prefetch" href="/assets/js/vendors~docsearch.1288603f.js"> |
| <link rel="stylesheet" href="/assets/css/0.styles.c79f5191.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 <String，ByteBuffer>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<String, ByteBuffer> statistics = { |
| "min_value" -> ByteBuffer of int value 0, |
| "last" -> ByteBuffer of int value 19, |
| "sum" -> ByteBuffer of double value 1093347116, |
| "first" -> ByteBuffer of int value 0, |
| "max_value" -> 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 "min_value" |
| ByteBuffer of int value 99, // associated with "max_value" |
| ByteBuffer of int value 0, // associated with "first_value" |
| ByteBuffer of int value 19, // associated with "last_value" |
| ByteBuffer of double value 1093347116 // associated with "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><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 "min_value" |
| ByteBuffer of int value 99, // associated with "max_value" |
| null, // associated with "first_value" |
| ByteBuffer of int value 19, // associated with "last_value" |
| null // associated with "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><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<String，String>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 <path of your TsFileResource Directory> |
| </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 <path of your TsFileResource Directory> |
| </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>.\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 <path of your TsFile> (<path of the file for saving the output result>) |
| </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><path of the file for saving the output result></code>，则将使用默认路径"TsFile_sketch_view.txt"。</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 <path of your TsFile> (<path of the file for saving the output result>) |
| </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><path of the file for saving the output result></code> , 则将使用默认路径"TsFile_sketch_view.txt"。</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>.\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&TsDeviceMetadataIndex |
| | [num of measurements] 6 |
| | 6 key&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.150a3d30.js" defer></script><script src="/assets/js/3.96a076a8.js" defer></script><script src="/assets/js/4.a65360c5.js" defer></script><script src="/assets/js/646.456054a7.js" defer></script> |
| </body> |
| </html> |
