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StatisticType {\n min_value, max_value, first_value, last_value, sum_value\n}\n")])]),t._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[t._v("1")]),a("br"),a("span",{staticClass:"line-number"},[t._v("2")]),a("br"),a("span",{staticClass:"line-number"},[t._v("3")]),a("br")])]),a("p",[t._v("因此，在上面的示例中，我们将获得")]),t._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[t._v('ByteBuffer[] statistics = [\n ByteBuffer of int value 0, // associated with "min_value"\n ByteBuffer of int value 99, // associated with "max_value"\n ByteBuffer of int value 0, // associated with "first_value"\n ByteBuffer of int value 19, // associated with "last_value"\n ByteBuffer of double value 1093347116 // associated with "sum_value"\n]\n')])]),t._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[t._v("1")]),a("br"),a("span",{staticClass:"line-number"},[t._v("2")]),a("br"),a("span",{staticClass:"line-number"},[t._v("3")]),a("br"),a("span",{staticClass:"line-number"},[t._v("4")]),a("br"),a("span",{staticClass:"line-number"},[t._v("5")]),a("br"),a("span",{staticClass:"line-number"},[t._v("6")]),a("br"),a("span",{staticClass:"line-number"},[t._v("7")]),a("br")])]),a("p",[t._v("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")]),t._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[t._v('ByteBuffer[] statistics = [\n ByteBuffer of int value 0, // associated with "min_value"\n ByteBuffer of int value 99, // associated with "max_value"\n null, // associated with "first_value"\n ByteBuffer of int value 19, // associated with "last_value"\n null // associated with "sum_value"\n]\n')])]),t._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[t._v("1")]),a("br"),a("span",{staticClass:"line-number"},[t._v("2")]),a("br"),a("span",{staticClass:"line-number"},[t._v("3")]),a("br"),a("span",{staticClass:"line-number"},[t._v("4")]),a("br"),a("span",{staticClass:"line-number"},[t._v("5")]),a("br"),a("span",{staticClass:"line-number"},[t._v("6")]),a("br"),a("span",{staticClass:"line-number"},[t._v("7")]),a("br")])]),a("h5",{attrs:{id:"_1-2-3-2-tsfilemetadata"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#_1-2-3-2-tsfilemetadata"}},[t._v("#")]),t._v(" 1.2.3.2 TsFileMetaData")]),t._v(" "),a("p",[t._v("在"),a("code",[t._v("TsDeviceMetadatas")]),t._v("之后是"),a("code",[t._v("TsFileMetaData")]),t._v("。")]),t._v(" "),a("table",[a("thead",[a("tr",[a("th",{staticStyle:{"text-align":"center"}},[t._v("Member Description")]),t._v(" "),a("th",{staticStyle:{"text-align":"center"}},[t._v("Member Type")])])]),t._v(" "),a("tbody",[a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Number of devices")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("int")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Pairs of device name and deviceMetadataIndex")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("String, TsDeviceMetadataIndex pair")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Number of measurements")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("int")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Pairs of measurement name and schema")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("String, MeasurementSchema pair")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Author byte")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("byte")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Author(if author byte is 0x01)")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("String")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("totalChunkNum")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("int")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("invalidChunkNum")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("int")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Bloom filter size")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("int")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Bloom filter bit vector")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("byte[Bloom filter size]")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Bloom filter capacity")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("int")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Bloom filter hash functions size")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("int")])])])]),t._v(" "),a("h6",{attrs:{id:"tsdevicemetadataindex"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#tsdevicemetadataindex"}},[t._v("#")]),t._v(" TsDeviceMetadataIndex")]),t._v(" "),a("table",[a("thead",[a("tr",[a("th",{staticStyle:{"text-align":"center"}},[t._v("Member Description")]),t._v(" "),a("th",{staticStyle:{"text-align":"center"}},[t._v("Member Type")])])]),t._v(" "),a("tbody",[a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("DeviceId")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("String")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Start offset of TsDeviceMetaData")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("long")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("length")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("int")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Start time")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("long")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("End time")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("long")])])])]),t._v(" "),a("h6",{attrs:{id:"measurementschema"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#measurementschema"}},[t._v("#")]),t._v(" MeasurementSchema")]),t._v(" "),a("table",[a("thead",[a("tr",[a("th",{staticStyle:{"text-align":"center"}},[t._v("Member Description")]),t._v(" "),a("th",{staticStyle:{"text-align":"center"}},[t._v("Member Type")])])]),t._v(" "),a("tbody",[a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("MeasurementId")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("String")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Data type")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("short")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Encoding")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("short")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Compressor")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("short")])]),t._v(" "),a("tr",[a("td",{staticStyle:{"text-align":"center"}},[t._v("Size of props")]),t._v(" "),a("td",{staticStyle:{"text-align":"center"}},[t._v("int")])])])]),t._v(" "),a("p",[t._v("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。\n 例如“ max_point_number”“ 2”。")]),t._v(" "),a("h5",{attrs:{id:"_1-2-3-3-tsfilemetadatasize"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#_1-2-3-3-tsfilemetadatasize"}},[t._v("#")]),t._v(" 1.2.3.3 TsFileMetadataSize")]),t._v(" "),a("p",[t._v("在"),a("code",[t._v("TsFileMetaData")]),t._v("之后，有一个整数，指示"),a("code",[t._v("TsFileMetaData")]),t._v("的大小。")]),t._v(" "),a("h4",{attrs:{id:"_1-2-4-魔术字符串"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#_1-2-4-魔术字符串"}},[t._v("#")]),t._v(" 1.2.4 魔术字符串")]),t._v(" "),a("p",[t._v("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。")]),t._v(" "),a("h3",{attrs:{id:"_1-3-tool-set"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#_1-3-tool-set"}},[t._v("#")]),t._v(" 1.3 Tool Set")]),t._v(" "),a("h4",{attrs:{id:"_1-3-1-tsfileresource打印工具"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#_1-3-1-tsfileresource打印工具"}},[t._v("#")]),t._v(" 1.3.1 TsFileResource打印工具")]),t._v(" "),a("p",[t._v("构建服务器后，此工具的启动脚本将出现在"),a("code",[t._v("server \\ target \\ iotdb-server-0.9.3 \\ tools")]),t._v("目录下。")]),t._v(" "),a("p",[t._v("命令:")]),t._v(" "),a("p",[t._v("对于Windows：")]),t._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[t._v(".\\print-tsfile-sketch.bat <path of your TsFileResource Directory>\n")])]),t._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[t._v("1")]),a("br")])]),a("p",[t._v("对于Linux或Mac OS：")]),t._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[t._v("./print-tsfile-sketch.sh <path of your TsFileResource Directory>\n")])]),t._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[t._v("1")]),a("br")])]),a("p",[t._v("Windows上的示例：")]),t._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[t._v("D:\\incubator-iotdb\\server\\target\\iotdb-server-0.9.3\\tools>.\\print-tsfile-resource-files.bat D:\\data\\data\\sequence\\root.vehicle\n````````````````````````\nStarting Printing the TsFileResources\n````````````````````````\n12:31:59.861 [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\nanalyzing D:\\data\\data\\sequence\\root.vehicle\\1572496142067-101-0.tsfile ...\ndevice 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])\nanalyzing the resource file finished.\n")])]),t._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[t._v("1")]),a("br"),a("span",{staticClass:"line-number"},[t._v("2")]),a("br"),a("span",{staticClass:"line-number"},[t._v("3")]),a("br"),a("span",{staticClass:"line-number"},[t._v("4")]),a("br"),a("span",{staticClass:"line-number"},[t._v("5")]),a("br"),a("span",{staticClass:"line-number"},[t._v("6")]),a("br"),a("span",{staticClass:"line-number"},[t._v("7")]),a("br"),a("span",{staticClass:"line-number"},[t._v("8")]),a("br")])]),a("h4",{attrs:{id:"_1-3-2-tsfile素描工具"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#_1-3-2-tsfile素描工具"}},[t._v("#")]),t._v(" 1.3.2 TsFile素描工具")]),t._v(" "),a("p",[t._v("构建服务器后，此工具的启动脚本将出现在"),a("code",[t._v("server \\ target \\ iotdb-server-0.9.3 \\ tools")]),t._v("目录下。")]),t._v(" "),a("p",[t._v("命令：")]),t._v(" "),a("p",[t._v("对于Windows：")]),t._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[t._v(".\\print-tsfile-sketch.bat <path of your TsFile> (<path of the file for saving the output result>) \n")])]),t._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[t._v("1")]),a("br")])]),a("ul",[a("li",[t._v("请注意，如果未设置 "),a("code",[t._v("<path of the file for saving the output result>")]),t._v('，则将使用默认路径"TsFile_sketch_view.txt"。')])]),t._v(" "),a("p",[t._v("对于Linux或Mac OS：")]),t._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[t._v("./print-tsfile-sketch.sh <path of your TsFile> (<path of the file for saving the output result>) \n")])]),t._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[t._v("1")]),a("br")])]),a("ul",[a("li",[t._v("请注意，如果未设置 "),a("code",[t._v("<path of the file for saving the output result>")]),t._v(' , 则将使用默认路径"TsFile_sketch_view.txt"。')])]),t._v(" "),a("p",[t._v("Windows上的示例：")]),t._v(" "),a("div",{staticClass:"language-$xslt line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[t._v("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\n````````````````````````\nStarting Printing the TsFile Sketch\n````````````````````````\nTsFile path:D:\\data\\data\\sequence\\root.vehicle\\1572496142067-101-0.tsfile\nSketch save path:TsFile_sketch_view.txt\n-------------------------------- TsFile Sketch --------------------------------\nfile path: D:\\data\\data\\sequence\\root.vehicle\\1572496142067-101-0.tsfile\nfile length: 187382\n\n POSITION| CONTENT\n -------- -------\n 0| [magic head] TsFile\n 6| [version number] 000001\n||||||||||||||||||||| [Chunk Group] of root.vehicle.d0 begins at pos 12, ends at pos 186469, version:102, num of Chunks:6\n 12| [Chunk] of s3, numOfPoints:10600, time range:[3000,13599], tsDataType:TEXT,\n TsDigest:[min_value:A,max_value:E,first_value:A,last_value:E,sum_value:0.0]\n | [marker] 1\n | [ChunkHeader]\n | 11 pages\n 55718| [Chunk] of s4, numOfPoints:10600, time range:[3000,13599], tsDataType:BOOLEAN,\n TsDigest:[min_value:false,max_value:true,first_value:true,last_value:false,sum_value:0.0]\n | [marker] 1\n | [ChunkHeader]\n | 11 pages\n 68848| [Chunk] of s5, numOfPoints:10600, time range:[3000,13599], tsDataType:DOUBLE,\n TsDigest:[min_value:3000.0,max_value:13599.0,first_value:3000.0,last_value:13599.0,sum_value:8.79747E7]\n | [marker] 1\n | [ChunkHeader]\n | 11 pages\n 98474| [Chunk] of s0, numOfPoints:21900, time range:[3000,100999], tsDataType:INT32,\n TsDigest:[min_value:0,max_value:99,first_value:0,last_value:19,sum_value:889750.0]\n | [marker] 1\n | [ChunkHeader]\n | 22 pages\n 123369| [Chunk] of s1, numOfPoints:21900, time range:[3000,100999], tsDataType:INT64,\n TsDigest:[min_value:0,max_value:39,first_value:8,last_value:19,sum_value:300386.0]\n | [marker] 1\n | [ChunkHeader]\n | 22 pages\n 144741| [Chunk] of s2, numOfPoints:21900, time range:[3000,100999], tsDataType:FLOAT,\n TsDigest:[min_value:0.0,max_value:122.0,first_value:8.0,last_value:52.0,sum_value:778581.0]\n | [marker] 1\n | [ChunkHeader]\n | 22 pages\n 186437| [Chunk Group Footer]\n | [marker] 0\n | [deviceID] root.vehicle.d0\n | [dataSize] 186425\n | [num of chunks] 6\n||||||||||||||||||||| [Chunk Group] of root.vehicle.d0 ends\n 186469| [marker] 2\n 186470| [TsDeviceMetadata] of root.vehicle.d0, startTime:3000, endTime:100999\n | [startTime] 3000tfi\n | [endTime] 100999\n | [num of ChunkGroupMetaData] 1\n | 1 ChunkGroupMetaData\n 187133| [TsFileMetaData]\n | [num of devices] 1\n | 1 key&TsDeviceMetadataIndex\n | [num of measurements] 6\n | 6 key&measurementSchema\n | [createBy isNotNull] false\n | [totalChunkNum] 6\n | [invalidChunkNum] 0\n | [bloom filter bit vector byte array length] 31\n | [bloom filter bit vector byte array]\n | [bloom filter number of bits] 256\n | [bloom filter number of hash functions] 5\n 187372| [TsFileMetaDataSize] 239\n 187376| [magic tail] TsFile\n 187382| END of TsFile\n\n---------------------------------- TsFile Sketch End ----------------------------------\n")])]),t._v(" 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