(window.webpackJsonp=window.webpackJsonp||[]).push([[546],{1111:function(t,s,a){"use strict";a.r(s);var _=a(69),v=Object(_.a)({},(function(){var t=this,s=t.$createElement,a=t._self._c||s;return a("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[a("h2",{attrs:{id:"spark-tsfile"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#spark-tsfile"}},[t._v("#")]),t._v(" Spark-TsFile")]),t._v(" "),a("h3",{attrs:{id:"about-tsfile-spark-connector"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#about-tsfile-spark-connector"}},[t._v("#")]),t._v(" About TsFile-Spark-Connector")]),t._v(" "),a("p",[t._v("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。")]),t._v(" "),a("p",[t._v("使用此连接器，您可以")]),t._v(" "),a("ul",[a("li",[t._v("从本地文件系统或hdfs加载单个TsFile到Spark")]),t._v(" "),a("li",[t._v("将本地文件系统或hdfs中特定目录中的所有文件加载到Spark中")]),t._v(" "),a("li",[t._v("将数据从Spark写入TsFile")])]),t._v(" "),a("h3",{attrs:{id:"system-requirements"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#system-requirements"}},[t._v("#")]),t._v(" System Requirements")]),t._v(" "),a("table",[a("thead",[a("tr",[a("th",[t._v("Spark Version")]),t._v(" "),a("th",[t._v("Scala Version")]),t._v(" "),a("th",[t._v("Java Version")]),t._v(" "),a("th",[t._v("TsFile")])])]),t._v(" "),a("tbody",[a("tr",[a("td",[a("code",[t._v("2.4.3")])]),t._v(" "),a("td",[a("code",[t._v("2.11.8")])]),t._v(" "),a("td",[a("code",[t._v("1.8")])]),t._v(" "),a("td",[a("code",[t._v("0.12.0")])])])])]),t._v(" "),a("blockquote",[a("p",[t._v("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/iotdb/tree/master/tsfile\n注意：spark版本目前仅支持2.4.3, 其他版本可能存在不适配的问题, 目前已知2.4.7的版本存在不适配的问题")])]),t._v(" "),a("h3",{attrs:{id:"快速开始"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#快速开始"}},[t._v("#")]),t._v(" 快速开始")]),t._v(" "),a("h4",{attrs:{id:"本地模式"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#本地模式"}},[t._v("#")]),t._v(" 本地模式")]),t._v(" "),a("p",[t._v("在本地模式下使用TsFile-Spark-Connector启动Spark：")]),t._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[t._v("./<spark-shell-path>  --jars  tsfile-spark-connector.jar,tsfile-{version}-jar-with-dependencies.jar,hadoop-tsfile-{version}-jar-with-dependencies.jar\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("<spark-shell-path>是您的spark-shell的真实路径。")]),t._v(" "),a("li",[t._v("多个jar包用逗号分隔，没有任何空格。")]),t._v(" "),a("li",[t._v("有关如何获取TsFile的信息，请参见https://github.com/apache/iotdb/tree/master/tsfile。")])]),t._v(" "),a("h4",{attrs:{id:"分布式模式"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#分布式模式"}},[t._v("#")]),t._v(" 分布式模式")]),t._v(" "),a("p",[t._v("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）：")]),t._v(" "),a("div",{staticClass:"language- 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"),a("td",[t._v("null")])]),t._v(" "),a("tr",[a("td",[t._v("9")]),t._v(" "),a("td",[t._v("sgcc")]),t._v(" "),a("td",[t._v("wf03")]),t._v(" "),a("td",[t._v("wt01")]),t._v(" "),a("td",[t._v("null")]),t._v(" "),a("td",[t._v("9.9")]),t._v(" "),a("td",[t._v("null")])])])]),t._v(" "),a("p",[t._v("TsFile-Spark-Connector可以通过SparkSQL在SparkSQL中以表的形式显示一个或多个tsfile。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，那么所有tsfile中的度量值的并集将保留在表中，并且具有相同名称的度量值在默认情况下具有相同的数据类型。注意，如果存在名称相同但数据类型不同的情况，TsFile-Spark-Connector将不能保证结果的正确性。")]),t._v(" "),a("p",[t._v("写入过程是将数据aframe写入一个或多个tsfile。默认情况下，需要包含两个列:time和delta_object。其余的列用作测量。如果用户希望将第二个表结构写回TsFile，可以设置“delta_object_name”参数(请参阅本手册5.1节的5.1节)。")]),t._v(" "),a("p",[t._v("附录B：旧注")]),t._v(" "),a("p",[t._v("注意：检查Spark根目录中的jar软件包，并将libthrift-0.9.2.jar和libfb303-0.9.2.jar分别替换为libthrift-0.9.1.jar和libfb303-0.9.1.jar。")])])}),[],!1,null,null,null);s.default=v.exports}}]);